Occupational Safety and Health Administration

DIMETHOATE

Chemical Identification
CAS #	60-51-5
Formula	C₅H₁₂NO₃PS₂
Synonyms	phosphorodithioic acid, O,O-dimethyl S-[2-(methylamino) -2-oxoethyl]ester; Cygon; Fostion mm; Perfekthion; Rogor; Roxion; Fosfamid; O,O-dimethyl S-(N-methylcarbamoylmethyl) phosphorodithioate

Physical Properties
Physical description	A white crystalline solid, with a camphor-like odor, white to grayish crystals for technical product.
Boiling point	243°F at 0.1 mmHg	Molecular weight	229.28
Freezing point/melting point	125°F	Vapor pressure	8.5x10-6 mmHg
Flash point	124°F	Vapor density
Specific gravity	1.277 at 149°F	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	D617
Sampling group
Sampler/Sampling media	OSHA versatile sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg) with GFF enclosed [SKC 226-30-16]
Sampling time^*	480 min
Sampling volume (TWA)^*	480 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FPD
Method reference	OSHA PV2113 (partially validated)
Notes
Special requirements

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA		TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	NA	Skin notation	NA	Skin notation	NA
Notes: Not established		Notes: Not established		Notes: Not established		Notes: Not established
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications:		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Dimethoate

NIOSH: Pocket Guide to Chemical Hazards - Dimethoate

Literature References

Last Updated Date : 12/28/2020

NICKEL, METAL & INSOLUBLE COMPOUNDS (as Ni)†

Chemical Identification
CAS #	7440-02-0
Formula	Ni
Synonyms	nickel metal; elemental nickel; nickel catalyst; nickel subsulfide; raney nickel; Other synonyms vary depending upon the specific nickel compound.

Physical Properties
Physical description	Lustrous, silvery odorless metal
Boiling point	5139°F	Molecular weight	58.7
Freezing point/melting point	2831°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	8.90 (metal)	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)	2831°F
NFPA health rating	2	NFPA fire rating	4
NFPA reactivity rating	1	NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	1840
Sampling group	METALSSG-2
Sampler/Sampling media	Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (25 or 37 mm) [MAWP025A0 or MAWP037A0]
Sampling time^*	240-480 min
Sampling volume (TWA)^*	480-960 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	ICP
Method reference	OSHA ID-125G (fully validated)
Notes	Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as specific form, valence state, or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. Smaller filters recommended for sampling inside welding hoods.
Special requirements	For the entire suite of analytes listed in METALSSG-2, request analyte code 2587.

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media	Ghost Wipe [SKC 225-2414]
Bulk Method	Available

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	1 mg/m³	REL-TWA	0.015 mg/m³	TLV-TWA	elemental: 1.5 mg/m³ (inhalable particluate matter), insoluble inorganic compounds (NOS): 0.2 mg/m³ (inhalable particulate matter) [1996]	PEL-TWA	0.5 mg/m³ (metal), 0.1 mg/m³ (insoluble compounds)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens.		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	10 mg/m³
Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R, TLV-A5		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Nickel

NIOSH: Pocket Guide to Chemical Hazards - Nickel metal and other compounds (as Ni)

Literature References

NOAA: CAMEO Chemicals - Nickel compounds.
EPA: Hazard Summary - Nickel Compounds
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Nickel [7440-02-0] and inorganic compounds, including Nickel subsulfide, as Ni. See annual publication for most recent information.
ATSDR: Toxicological Profile for Nickel. August 2005.
California Occupational Safety & Health Standards Board: Initial and Final Statement of Reasons. August 3, 2010.
Fishwick, D., Bradshaw, L., Slater, T., Curran, A. and Pearce, N.: Respiratory symptoms and lung function change in welders: are they associated with workplace exposures? N. Z. Med. J. 117(1193): U872, 2004.
NIOSH: Occupational Health Guideline for Nickel Metal and Soluble Nickel Compounds. September 1978.
NIOSH: Criteria for a Recommended Standard - Occupational Exposure to Inorganic Nickel. May 1977.
Rom, W.N. (ed.): Environmental and Occupational Medicine. 2nd ed. Boston, MA, Little, Brown and Company, p. 809. 1992.
Sunderman, F.W., Jr.: Nasal toxicity, carcinogenicity, and olfactory uptake of metals. Ann. Clin. Lab. Sci. 31(1): 3-24, 2001.
Zenz, C., O.B. Dickerson, E.P. Horvath. Occupational Medicine. 3rd ed. St. Louis, MO., p. 106, 1994.

Last Updated Date : 06/14/2023

Group Sampling Information
Sampling Media	Sampling Time (If there are exceptions they will be in Notes)	TWA Sampling Volume (If there are exceptions they will be in Notes)	TWA Flow Rate (If there are exceptions they will be in Notes)
mixed cellulose ester filter (MCEF)	240-480 min	480-960 L	2 L/min

Analytes Sampling Information
Analytes	IMIS Code	Wipe Sampling	Incompatibilities
Iron*	I200	Yes, with a Ghost Wipe
Vanadium*	V125	Yes, with a Ghost Wipe
Zinc*	Z100	Yes, with a Ghost Wipe
Chromium, Metal & Insoluble salts (as Cr)**	0685	Yes, with a Ghost Wipe	Hexavalent Chromium
Cobalt, Metal, Dust & Fume (as Co)	0720	Yes, with a Ghost Wipe	Tungsten
Copper Dust & Mists (as Cu)	0730	Yes, with a Ghost Wipe
Copper Fume (as Cu)	0731	Yes, with a Ghost Wipe
Iron Oxide Fume	1520	Yes, with a Ghost Wipe
Manganese, Compounds & Fume (as Mn)***	1620	Yes, with a Ghost Wipe
Molybdenum, Dust & Insoluble compounds, (as Mo)	1790	Yes, with a Ghost Wipe
Nickel, Metal, & Insoluble compounds (as Ni)	1840	Yes, with a Ghost Wipe
Vanadium, Respirable Dust & Fume	2571	Yes, with a Ghost Wipe
Zinc Oxide Fume	2610	Contact SLTC for information

Notes

Request any or all of these analytes together. Entire group can be requested with analyte code 2587.

Results for unrequested analytes in this group will be reported if significant amount are found.

There is no need to contact SLTC before sampling.

This analysis can be pre-analyzed gravimetrically if collected on a pre-weighted PVC filter obtained from SLTC.

*These 3 codes are used for bulk sample results in place of their metal oxides.

**Please note that this is NOT hexavalent chromium.

***For Manganese STEL take only a 10-30 L sample.

MOLYBDENUM, SOLUBLE COMPOUNDS†

Chemical Identification
CAS #	7439-98-7
Formula	Mo
Synonyms	molybdenum metal

Physical Properties
Physical description	Dark gray or black powder with a metallic luster.
Boiling point	8717°F	Molecular weight	95.9
Freezing point/melting point	4752°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	10.28	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	1791
Sampling group
Sampler/Sampling media	Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0]
Sampling time^*	240 min
Sampling volume (TWA)^*	480-960 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	ICP
Method reference	OSHA ID-125G (fully validated)
Notes	Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as specific form, valence state, or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. Analysis for this analyte is based on water solubility.
Special requirements

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	5 mg/m³	REL-TWA		TLV-TWA	0.5 mg/m³ (respirable particulate matter) [1999]	PEL-TWA	0.5 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	NA	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes: See Appendix D - Substances with No Established RELs.		Notes:		Notes: See footnote [n].
Health factors: See NIH-NLM PubChem.		IDLH	1000 mg/m³
Carcinogenic classifications: TLV-A3		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Molybdenum

NIOSH: Pocket Guide to Chemical Hazards - Molybdenum (soluble compounds, as Mo)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Molybdenum, as Mo. See annual publication for most recent information.

Last Updated Date : 02/09/2026

MOLYBDENUM, DUST & INSOLUBLE COMPOUNDS (as Mo)†

Chemical Identification
CAS #	7439-98-7
Formula	Mo
Synonyms	molybdenum metal

Physical Properties
Physical description	Dark gray or black powder with a metallic luster.
Boiling point	8717°F	Molecular weight	95.9
Freezing point/melting point	4752°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	10.28	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	1790
Sampling group	METALSSG-2
Sampler/Sampling media	Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (25 or 37 mm) [MAWP025A0 or MAWP037A0]
Sampling time^*	240-480 min
Sampling volume (TWA)^*	480-960 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	ICP
Method reference	OSHA ID-125G (fully validated)
Notes	Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as a specific form or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. The physical form of a sample (dust, mist, or fume) is identified by the compliance officer using available documentation of materials and processes. Smaller filters recommended for sampling inside welding hoods.
Special requirements	For the entire suite of analytes listed in METALSSG-2, request analyte code 2587.

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media	Ghost Wipe [SKC 225-2414]
Bulk Method	Available

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	15 mg/m³ (total dust)	REL-TWA		TLV-TWA	10 mg/m³ (inhalable particulate matter), 3 mg/m³ (respirable particulate matter) [1999]	PEL-TWA	10 mg/m³ (total dust), 3 mg/m³ (respirable)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	NA	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes: See Appendix D - Substances with No Established RELs.		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	5000 mg/m³
Carcinogenic classifications: Not listed		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Molybdenum

NIOSH: Pocket Guide to Chemical Hazards - Molybdenum

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Carbon monoxide. See annual publication for most recent information.
Occupational Health Guidelines for Chemical Hazards. DHHS/ NIOSH Publication No. 81-123, (January 1981). Provides a table of contents of guidelines for many hazardous chemicals. The files provide technical chemical information, including chemical and physical properties, health effects, exposure limits, and recommendations for medical monitoring, personal protective equipment (PPE), and control procedures.
ATSDR: Toxicological profile for carbon monoxide. June 2012.
EPA: Integrated Science Assessment for Carbon Monoxide (Final Report). U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-09/019F. January 29, 2010.
NIOSH: Criteria Document for a Recommended Standard - Occupational Exposure to Carbon Monoxide. 1972.
Sari I, Zengin S, Ozer O, Davutoglu V, Yildirim C, Aksoy M: Chronic carbon monoxide exposure increases electrocardiographic P-wave and QT dispersion. Inhal Toxicol. 20(9):879-84, July 2008.

Last Updated Date : 06/14/2023

Group Sampling Information
Sampling Media	Sampling Time (If there are exceptions they will be in Notes)	TWA Sampling Volume (If there are exceptions they will be in Notes)	TWA Flow Rate (If there are exceptions they will be in Notes)
mixed cellulose ester filter (MCEF)	240-480 min	480-960 L	2 L/min

Analytes Sampling Information
Analytes	IMIS Code	Wipe Sampling	Incompatibilities
Iron*	I200	Yes, with a Ghost Wipe
Vanadium*	V125	Yes, with a Ghost Wipe
Zinc*	Z100	Yes, with a Ghost Wipe
Chromium, Metal & Insoluble salts (as Cr)**	0685	Yes, with a Ghost Wipe	Hexavalent Chromium
Cobalt, Metal, Dust & Fume (as Co)	0720	Yes, with a Ghost Wipe	Tungsten
Copper Dust & Mists (as Cu)	0730	Yes, with a Ghost Wipe
Copper Fume (as Cu)	0731	Yes, with a Ghost Wipe
Iron Oxide Fume	1520	Yes, with a Ghost Wipe
Manganese, Compounds & Fume (as Mn)***	1620	Yes, with a Ghost Wipe
Molybdenum, Dust & Insoluble compounds, (as Mo)	1790	Yes, with a Ghost Wipe
Nickel, Metal, & Insoluble compounds (as Ni)	1840	Yes, with a Ghost Wipe
Vanadium, Respirable Dust & Fume	2571	Yes, with a Ghost Wipe
Zinc Oxide Fume	2610	Contact SLTC for information

Notes

Request any or all of these analytes together. Entire group can be requested with analyte code 2587.

Results for unrequested analytes in this group will be reported if significant amount are found.

There is no need to contact SLTC before sampling.

This analysis can be pre-analyzed gravimetrically if collected on a pre-weighted PVC filter obtained from SLTC.

*These 3 codes are used for bulk sample results in place of their metal oxides.

**Please note that this is NOT hexavalent chromium.

***For Manganese STEL take only a 10-30 L sample.

MERCURY (VAPOR)†

Chemical Identification
CAS #	7439-97-6
Formula	Hg
Synonyms	mercury metal: colloidal mercury; metallic mercury; Quicksilver; elemental mercury

Physical Properties
Physical description	An odorless, silvery metallic liquid.
Boiling point	674°F	Molecular weight	200.6
Freezing point/melting point	-38°F	Vapor pressure	0.0012 mmHg
Flash point		Vapor density
Specific gravity	13.6 (metal)	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	1631
Sampling group
Sampler/Sampling media	Hydrar sorbent tube [SKC 226-17-1A]
Sampling time^*
Sampling volume (TWA)^*	90 L
Sampling flow rate (TWA)^*	0.2 L/min
Sampling volume (STEL/Peak/C)^*	3 L
Sampling flow rate (STEL/Peak/C)^*	0.2 L/min
Analytical method instruments	CVAA
Method reference	OSHA ID-140 (fully validated)
Notes	Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as a specific form or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. The physical form of a sample (dust, mist, or fume) is identified by the compliance officer using available documentation of materials and processes. A pre-filter, consisting of a mixed cellulose ester filter in a polystyrene cassette, is used with the active sampler. The pre-filter assembly should be connected to the sampling tube with the minimum amount of Tygon tubing necessary. The filter of the sampler will be analyzed separately and reported as [(Aryl and Inorganic) (as Hg), analyte code M111] based on the collection of particulate Mercury. The Hydrar or Hopcalite sorbent material will be analyzed and reported as [Mercury (Vapor) (as Hg), analyte code 1631]. These two results could then be combined to evaluate the transitional limit of TWA total Mercury, 1 mg/10m³, (vapor and particulate). Passive air sampling not recommended.
Special requirements

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device	Detector tube	Detector tube	Detector tube
Model/Type	Dräger - Mercury Vapour 0.1/b, CH23101	Gastec 40	Matheson-Kitagawa 8014-142S
Sampling information (see manufacturer instructions)	1-40 strokes, 0.2-2 mg/m³ range, uncertainty approx 50%	0.5-5 strokes, 0.01-13.2 mg/m³ range, uncertainty 16%; for 0.25-2 mg/m³, 8% for 2-6 mg/m³	1-5 strokes, 0.05-10 mg/m³ range

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	0.1 mg/m³ - Construction (1926) and Maritime (1925) only	REL-TWA	0.05 mg/m³	TLV-TWA	0.025 mg/m³ [1991]	PEL-TWA	0.025 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C	1 mg/10m³ (0.1 mg/m³)* - General Industry (1910) only	REL-C	0.1 mg/m³	TLV-C		PEL-C	0.1 mg/m³
Skin notation	Y	Skin notation	Y	Skin notation	Y	Skin notation	Y
Notes: See 29 CFR 1910.1000 Table Z-2. 8-hr TWA and skin notation apply to OSHA Construction and Maritime Industries only. See 29 CFR 1926.55 Table 1 and 29 CFR 1915.1000 Table Z-Shipyards.*		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	10 mg/m³
Carcinogenic classifications: IARC-3, TLV-A4, EPA-D		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: --/.025 ppm/0.5 ppm

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Mercury

NIOSH: Pocket Guide to Chemical Hazards - Mercury compounds [except (organo) alkyls] (as Hg)

Literature References

EPA: Hazard Summary - Mercury
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Mercury [7439-97-6], all forms except alkyl, as Hg, Elemental and inorganic forms. See annual publication for most recent information.
ANSI: American National Standard Acceptable Concentrations of Inorganic Mercury and Non-Alkyl Organo Compounds. 1972.
ATSDR: Toxicological Profile for Mercury. 1999.
Chang, J.W., Chen, H.L., Su, H.J., Liao, P.C., Guo, H.R., Lee, C.C.: Simultaneous exposure of non-diabetics to high levels of dioxins and mercury increases their risk of insulin resistance. J Hazard Mat. 185(2-3):749-55, January 30, 2011.
Dutra, M.D., Monteiro, M.C., Camara, Vde.M.: Evaluation of central auditory processing in adolescents exposed to metallic mercury. Pro Fono. 22(3):339-44, July-September 2010.
EPA IRIS: Mercury, 1995.
Farahat, S.A., Rashed, L.A., Zawilla, N.H., Farouk, S.M.: Effect of occupational exposure to elemental mercury in the amalgam on thymulin hormone production among dental staff. Toxicol Ind Health. 25(3):159-67, April 2009.
Feitosa-Santana, C., Bimler D.L., Paramei, G.V., Oiwa, N.N., Barboni, M.T., Costa, M.F., Silveira, L.C., Ventura, D.F.: Color-space distortions following long-term occupational exposure to mercury vapor. Opthalmic Physiol Opt. 30(5):724-30, September 2010.
Gardner, R.M., Nyland J.F., Silva, I.A., de Souza, J.M., Silbergeld, E.K.: Mercury exposure, serum antinuclear/antinucleolar antibodies and serum cytokine levels in mining populations in Amazonian Brazil: A cross-sectional study. Environ Res. 110(4): 345-354, May 2010.
NIOSH: Criteria for a Recommended Standard - Occupational Exposure to Inorganic Mercury. 1973.
NIOSH: Occupational Health Guideline for Inorganic Mercury. 1978.
WHO/IPCS: Environmental Health Criteria 118 - Inorganic Mercury. pp. 13-21, 68-83, 1991. Fawer, R.F., U. DeRibaupierre, M.P. Guillemin, M. Berode and M. Lobe. 1983. Measurement of hand tremor induced by industrial exposure to metallic mercury. J. Ind. Med. 40: 204-208.
Piikivi, L. and U. Tolonen. 1989. EEG findings in chlor-alkali workers subjected to low long term exposure to mercury vapor. Br. J. Ind. Med. 46: 370-375.
Piikivi, L. and H. Hanninen. 1989. Subjective symptoms and psychological performance of chlorine-alkali workers. Scand. J. Work Environ. Health. 15: 69-74.
Piikivi, L. 1989. Cardiovascular reflexes and low long-term exposure to mercury vapor. Int. Arch. Occup. Environ. Health. 61: 391-395.
Ngim, C.H., S.C. Foo, K.W. Boey and J. Jeyaratnam. 1992. Chronic neurobehavioral effects of elemental mercury in dentists. Br. J. Ind. Med. 49: 782-790.
Liang, Y-X., R-K. Sun, Y. Sun, Z-Q. Chen and L-H. Li. 1993. Psychological effects of low exposure to mercury vapor: Application of a computer-administered neurobehavioral evaluation system. Environ. Res. 60: 320-327.
Letter of Interpretation: * PEL for Inorganic Mercury John B Miles, Jr. September 3, 1996

Last Updated Date : 11/03/2022

MERCURY (ARYL & INORGANIC COMPOUNDS)†

Chemical Identification
CAS #	7439-97-6
Formula	Hg
Synonyms	Synonyms vary depending upon the specific inorganic or aryl mercury compound.

Physical Properties
Physical description	An odorless, silvery metallic liquid.
Boiling point	674°F	Molecular weight	200.6
Freezing point/melting point	-38°F	Vapor pressure	0.0012 mmHg
Flash point		Vapor density
Specific gravity	13.55	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	M111
Sampling group
Sampler/Sampling media	Mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) and filter spacer with Na₂CO₃ impregnated backup pad, in a 3-piece cassette [SKC 225-9001]
Sampling time^*	5 min
Sampling volume (TWA)^*	10 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	CVAA
Method reference	OSHA ID-145 (fully validated)
Notes	Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as specific form, valence state, or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes.
Special requirements

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method	Available

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA	0.05 mg/m³ (Hg vapor)	TLV-TWA	0.1 mg/m³ (aryl compounds), 0.025 mg/m³ (elemental and inorganic forms), [1991]	PEL-TWA	0.025 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C	0.1 mg/m³*	REL-C	0.1 mg/m³	TLV-C		PEL-C	0.1 mg/m³*
Skin notation	N	Skin notation	Y	Skin notation	Y	Skin notation	Y
Notes: See 29 CFR 1910.1000 Table Z-2*		Notes:		Notes: BEI® (elemental and inorganic forms)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	10 mg/m³
Carcinogenic classifications: TLV-A4 (elemental and inorganic forms), IARC-2B		Notes: as Hg
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: --/0.25 ppm/0.5 ppm

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Mercury

NIOSH: Pocket Guide to Chemical Hazards - Mercury compounds [except (organo) alkyls] (as Hg)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Mercury [7439-97-6], all forms except alkyl, as Hg. See annual publication for most recent information.
Letter of Interpretation: * PEL for Inorganic Mercury John B Miles, Jr. September 3, 1996

Last Updated Date : 01/04/2021

MERCURY (ORGANO) ALKYL COMPOUNDS†

Chemical Identification
CAS #	7439-97-6
Formula	Hg
Synonyms	Synonyms vary depending upon the specific (organo) alkyl mercury compound.

Physical Properties
Physical description
Boiling point	266°F	Molecular weight	98.2
Freezing point/melting point		Vapor pressure	depends upon the specific compound
Flash point		Vapor density
Specific gravity		Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time^*
Sampling volume (TWA)^*
Sampling flow rate (TWA)^*
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments
Method reference
Notes
Special requirements

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	0.01 mg/m³	REL-TWA	0.01 mg/m³	TLV-TWA	0.01 mg/m³ [1992]	PEL-TWA	0.01 mg/m³
PEL-STEL		REL-STEL	0.03 mg/m³	TLV-STEL	0.03 mg/m³ [1992]	PEL-STEL	0.03 mg/m³
PEL-C	0.04 mg/m³	REL-C		TLV-C		PEL-C	0.04 mg/m³
Skin notation	Y	Skin notation	Y	Skin notation	Y	Skin notation	Y
Notes: See 29 CFR 1910.1000 Table Z-2.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	2 mg/m³ (as Hg)
Carcinogenic classifications: Not listed		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: --/0.25 ppm/0.5 ppm

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Not listed

NIOSH: Pocket Guide to Chemical Hazards - Mercury (organo) alkyl compounds (as Hg)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Mercury [7439-97-6], alkyl compounds, as Hg. See annual publication for most recent information.

Last Updated Date : 01/29/2021

NITROGEN TRICHLORIDE

Chemical Identification
CAS #	10025-85-1
Formula	Cl₃N
Synonyms	agene; chlorine nitride; trichloramine; trichlorine nitride

Physical Properties
Physical description	Yellow oily liquid with pungent odor.
Boiling point	160°F	Molecular weight	120.36
Freezing point/melting point	-40°F	Vapor pressure	19.95 kPa
Flash point		Vapor density
Specific gravity		Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time^*
Sampling volume (TWA)^*
Sampling flow rate (TWA)^*
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments
Method reference
Notes
Special requirements

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA		TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	NA	Skin notation	NA	Skin notation	NA
Notes: Not established		Notes: Not established		Notes: Not established		Notes: Not established
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications:		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Not listed

NIOSH: Pocket Guide to Chemical Hazards - Not listed

Literature References

Barbee, S.J., Thackara, J.W. and Rinehart, W.E.: Acute inhalation toxicology of nitrogen trichloride. Am. Ind. Hyg. Assoc. J. 44(2): 145-146, 1983.
Bernard, A., Carbonnelle, S., Michel, O., Higuet, S., De Burbure, C., Buchet, J.P., Hermans, C., Dumont, X. and Doyle, I.: Lung hyperpermeability and asthma prevalence in schoolchildren: unexpected associations with the attendance at indoor chlorinated swimming pools. Occup. Environ. Med. 60(6): 385-394, 2003.
Carbonnelle, S., Francaux, M., Doyle, I., Dumont, X., de Burbure, C., Morel, G., Michel, O. and Bernard, A.: Changes in serum pneumoproteins caused by short-term-exposure to nitrogen trichloride in indoor chlorinated swimming pools. Biomarkers 7(6): 464-478, 2002.
Dokter, T.: Formation of NCl3 and N2O in the reaction of NaOCl and nitrogen compounds. J. Hazard. Mater. 12: 207-224, 1985.
Gagnaire, F., Azim, S., Bonnet, P., Hecht, G. and Hery, M.: Comparison of the sensory irritation response in mice to chlorine and nitrogen trichloride. J. Appl. Toxicol. 14(6): 405-409, 1994.
Hery, M., Gerber, J.M., Hecht, G., Subra, I., Possoz, C., Aubert, S., Dieudonne, M. and Andre, J.C.: Exposure to chloramines in a green salad processing plant. Ann. Occup. Hyg. 42: 437-451, 1998.
Hery, M., Hecht, G., Gerber, J.M., Hubert, G., Subra, I., Aubert, S., Gerardin, F. and Dorotte, M.: Occupational exposure during cleaning and disinfection in the food industry. Occup. Hyg. 5(2): 131-144, 1999.
Hery, M., Hecht, G., Gerber, J.M., Gendre, J.C., Hubert G. and Rebuffaud, J.: Exposure to chloramines in the atmosphere of indoor swimming pools. Ann. Occup. Hyg. 39: 427-439, 1995.
King, B.S., Page, E.H., Mueller, C.A., Dollberg, D.D., Gomez, K.E. and Warren, A.M.: Eye and respiratory symptoms in poultry processing workers exposed to chlorine by-products. Am. J. Ind. Med. 49(2): 119-126, 2006.
Massin, N., Bohadana, A.B., Wild, P., Mery, M., Toamain, J.P. and Hubert, G.:Respiratory symptoms and bronchial responsiveness in lifeguards exposed to nitrogen trichloride in indoor swimming pools. Occup. Environ. Med. 55: 258-263, 1998.
Massin, N., et al.: Respiratory symptoms and bronchial responsiveness among cleaning and disinfecting workers in the food industry. Occup. Environ. Med. 64(2): 75-81, 2007.
Nemery, B., Hoet, P.H.M. and Nowak, D.: Indoor swimming pools, water chlorination and respiratory health (editorial). Eur. Respir. J. 19(5): 790-793, 2002.
Penny, P.T.: Swimming pool wheezing. Br. Med. J. (Clin. Res. Ed.) 287(6390): 461-462, 1983.
Sanderson, W.T., Weber, A. and Echt, A.: Case reports: epidemic eye and upper respiratory irritation in poultry processing plants. Appl. Occup. Environ. Hyg. 10(1): 43-49, 1995.
Shaw, C.A., Bains, J.S., Pasqualotto, B.A. and Curry, K.: Methionine sulfoximine shows excitotoxic actions in rat cortical slices. Can. J. Physiol. Pharmacol. 77(11): 871-877, 1999.
Skipton, S. and Dvorak, B.: Drinking water: chloramines water disinfection in Omaha Metropolitan Utilities District. Nebraska Cooperative Extension File NF02-505, 2002.
Thickett, K.M., McCoach, J.S., Gerber, J.M., Sadhra, S. and Burge, P.S.: Occupational asthma caused by chloramines in indoor swimming-pool air. Eur. Respir. J. 19(5): 827-832, 2002.

Last Updated Date : 01/05/2021

MANGANESE, COMPOUNDS & FUME (as Mn)†

Chemical Identification
CAS #	7439-96-5
Formula	Mn
Synonyms	Manganese metal: Colloidal manganese; Manganese-55 Synonyms of other compounds vary depending upon the specific manganese compound.

Physical Properties
Physical description	A lustrous, brittle, silvery solid.
Boiling point	3564°F	Molecular weight	54.9
Freezing point/melting point	2271°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	7.20 (metal)	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	1620	1620
Sampling group		METALSSG-2
Sampler/Sampling media	Tared low-ash 37 mm PVC filter, 5 microns [SLTC108]	Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (25 or 37 mm) [MAWP025A0 or MAWP037A0]
Sampling time^*	240-480 min	240-480 min
Sampling volume (TWA)^*	960 L	480-960 L
Sampling flow rate (TWA)^*	2 L/min	2 L/min
Sampling volume (STEL/Peak/C)^*	408-960 L
Sampling flow rate (STEL/Peak/C)^*	2 L/min
Analytical method instruments	Gravimetric	ICP
Method reference	OSHA PV2121 (partially validated)	OSHA ID-125G (fully validated)
Notes	If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration. If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for the applicable component and appropriate results will be reported.	Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as a specific form or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. The physical form of a sample (dust, mist, or fume) is identified by the compliance officer using available documentation of materials and processes. Smaller filters recommended for sampling inside welding hoods.
Special requirements	FOR TOTAL DUST SAMPLES, DO NOT USE A CYCLONE!!	For the entire suite of analytes listed in METALSSG-2, request analyte code 2587.

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA	1 mg/m³	TLV-TWA	0.02 mg/m³ (respirable particulate matter), 0.1 mg/m³; (inhalable particulate matter) [2012]	PEL-TWA	0.2 mg/m³
PEL-STEL		REL-STEL	3 mg/m³	TLV-STEL		PEL-STEL	3 mg/m³
PEL-C	5 mg/m³	REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	500 mg/m³
Carcinogenic classifications: EPA-D, TLV-A4		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Manganese

NIOSH: Pocket Guide to Chemical Hazards - Manganese compounds and fume (as Mn)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Manganese [7439-96-5], elemental and inorganic compounds, as Mn. See annual publication for most recent information.
EPA: Hazard Summary - Manganese
ATSDR: Toxicological Profile for Manganese. 2012.
California Occupational Safety & Health Standards Board: Initial and Final Statement of Reasons. February 3, 2001.
EPA: Integrated Risk Information System for Manganese (CASRN 7439-96-5). 1988.
Hobbesland, A., Kjuus, H. and Thelle, D.S.: Mortality from nonmalignant respiratory diseases among male workers in Norwegian ferroalloy plants. Scand. J. Work Environ. Health 23(5): 342-350, 1997.
Laohaudomchok, W. et al. Neuropsychological effects of low-level manganese exposure in welders. Neurotoxicology. 32(2): 171-179, 2011.
NIOSH: Occupational Health Guideline for Manganese. 1978.
Racette, B.A., McGee-Minnich, L, Moerlein, S.M., Mink, J.W., Videen, T.O. and Perlmutter, J.S.: Welding-related parkinsonism: clinical features, treatment, and pathophysiology. Neurology 56(1): 8-13, 2001.
Roels, H., R. Lauwerys, J.P. Buchet et al.: Epidemiological survey among workers exposed to manganese: Effects on lung, central nervous system, and some biological indices. Am. J. Ind. Med. 11: 307-327, 1987.
Roels, H.A., P. Ghyselen, J.P. Buchet, E. Ceulemans, and R.R. Lauwerys: Assessment of the permissible exposure level to manganese in workers exposed to manganese dioxide dust. Br. J. Ind. Med. 49: 25-34, 1992.
Wergeland, E. and Iversen, B.G.: Deaths from pneumonia after welding. Scand. J. Work Environ. Health 27(5): 353, 2001.

Last Updated Date : 06/14/2023

Group Sampling Information
Sampling Media	Sampling Time (If there are exceptions they will be in Notes)	TWA Sampling Volume (If there are exceptions they will be in Notes)	TWA Flow Rate (If there are exceptions they will be in Notes)
mixed cellulose ester filter (MCEF)	240-480 min	480-960 L	2 L/min

Analytes Sampling Information
Analytes	IMIS Code	Wipe Sampling	Incompatibilities
Iron*	I200	Yes, with a Ghost Wipe
Vanadium*	V125	Yes, with a Ghost Wipe
Zinc*	Z100	Yes, with a Ghost Wipe
Chromium, Metal & Insoluble salts (as Cr)**	0685	Yes, with a Ghost Wipe	Hexavalent Chromium
Cobalt, Metal, Dust & Fume (as Co)	0720	Yes, with a Ghost Wipe	Tungsten
Copper Dust & Mists (as Cu)	0730	Yes, with a Ghost Wipe
Copper Fume (as Cu)	0731	Yes, with a Ghost Wipe
Iron Oxide Fume	1520	Yes, with a Ghost Wipe
Manganese, Compounds & Fume (as Mn)***	1620	Yes, with a Ghost Wipe
Molybdenum, Dust & Insoluble compounds, (as Mo)	1790	Yes, with a Ghost Wipe
Nickel, Metal, & Insoluble compounds (as Ni)	1840	Yes, with a Ghost Wipe
Vanadium, Respirable Dust & Fume	2571	Yes, with a Ghost Wipe
Zinc Oxide Fume	2610	Contact SLTC for information

Notes

Request any or all of these analytes together. Entire group can be requested with analyte code 2587.

Results for unrequested analytes in this group will be reported if significant amount are found.

There is no need to contact SLTC before sampling.

This analysis can be pre-analyzed gravimetrically if collected on a pre-weighted PVC filter obtained from SLTC.

*These 3 codes are used for bulk sample results in place of their metal oxides.

**Please note that this is NOT hexavalent chromium.

***For Manganese STEL take only a 10-30 L sample.

LEAD, INORGANIC (as Pb)‡

Chemical Identification
CAS #	7439-92-1
Formula	Pb
Synonyms	lead metal; plumbum; other synonyms vary depending upon specific compounds

Physical Properties
Physical description	Soft silver-bluish white to gray metal.
Boiling point	3164°F	Molecular weight	207.2
Freezing point/melting point	621.5°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	11.34	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	1591	1591	1591
Sampling group	METALSSG-1	METALSSG-2	METALSSG-3
Sampler/Sampling media	Mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) and filter spacer with Na₂CO₃ impregnated backup pad, in a 3-piece cassette [SKC 225-9001]	Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (25 or 37 mm) [MAWP025A0 or MAWP037A0]	Mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) and filter spacer with Na₂CO₃ impregnated backup pad, in a 3-piece cassette [SKC 225-9001]
Sampling time^*	240-480 min	240-480 min	240-480 min
Sampling volume (TWA)^*	480-960 L	480-960 L	480-960 L
Sampling flow rate (TWA)^*	2 L/min	2 L/min	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	ICP-MS	ICP	ICP-MS
Method reference	OSHA 5003 (fully validated)	OSHA ID-125G (fully validated)	OSHA ID-206 (fully validated)
Notes	The METALSSG-1 sampling group members are analyzed using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) to target the expanded standards metals As, Cd, and Pb with high sensitivity (clean samples and smear tabs only). If lead is the only analyte of interest, use the single analyte code 1591. If the filter is not overloaded, samples may be collected up to an 8-hour period.	Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as specific form, valence state, or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. Smaller filters recommended for sampling inside welding hoods.	If the filter is not overloaded, samples may be collected up to an 8-hour period. Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as a specific form or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. The physical form of a sample (dust, mist, or fume) is identified by the compliance officer using available documentation of materials and processes.
Special requirements	For high sensitivity, request any or all of analytes listed in METALSSG-1 (0260, C141, & 1591).	For the entire suite of analytes listed in METALSSG-2, request analyte code 2587.	For the entire suite of analytes listed in METALSSG-3, which may be found during soldering and brazing operations, request analyte code S131.

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media	See sampling group information for media.
Bulk Method	See sampling group information.

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	0.05 mg/m³ [0.03 mg/m³ Action Level]	REL-TWA	0.05 mg/m³	TLV-TWA	0.05 mg/m³ (Lead and inorganic compounds, as Pb) [1991]	PEL-TWA	0.05 mg/m³ (Lead, metallic and inorganic compounds), dust and fume, (as Pb)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: OSHA considers "lead" to mean elemental lead, all inorganic lead compounds, and a class of organic lead compounds called lead soaps. This standard does not apply to other organic lead compounds. Note: Large nonferrous foundries (20+ employees) are required to achieve the PEL of 0.05 mg/m³ by means of engineering and work practice controls. Small nonferrous foundries (<20 employees) are required to achieve an 8-hour TWA of 0.075 mg/m³ by such controls. See 29 CFR 1910.1025.		Notes: NIOSH considers "lead" to mean metallic lead, lead oxides, and lead salts (including organic salts such as lead soaps but excluding lead arsenate. Air concentrations should be maintained so that worker blood lead remains less than 0.06 mg Pb/100 g of whole blood. See Appendix C, Supplementary Exposure Limits.		Notes: BEI®		Notes: See also Section 5198.
Health factors: See NIH-NLM PubChem.		IDLH	100 mg/m³
Carcinogenic classifications: IARC-2A, TLV-A3, EPA-B2, NTP-R		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Lead

NIOSH: Pocket Guide to Chemical Hazards - Lead

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Lead [7439-92-1] and inorganic compounds, as Pb. See annual publication for most recent information.
ATSDR: Toxicological Profile for Lead. August 2007.
Barth, A. et al.: Reduced cognitive abilities in lead-exposed men. Int. Arch. Occup. Environ. Health 75(6): 394-398, 2002.
IARC: Monographs 87. Organic and Inorganic Lead Compounds. 2006.
NIOSH: Adult Blood Lead Epidemiology and Surveillance (ABLES).
NIOSH: Occupational Safety and Health Guideline for Inorganic Lead. 1988.
NTP Monograph on Low Level Effects of Lead, 2012
NTP: Report on Carcinogens Lead and Lead Compounds
OSHA: Abrasive Blasting Hazards in Shipyard Employment. December 2006.
OSHA: Lead in Construction 2004.
OSHA: Occupational Safety and Health Standards, Substance Safety Data Sheet for Occupational Exposure to Lead. 1910.1025 App A. May 31, 1991.
Wu, W.T., Lin, Y.J., Liou S.H., Yang, C.Y., Cheng, K.F., Tsai, PJ, and Wu T.N.: Brain cancer associated with environmental lead exposure: evidence from implementation of a National Petrol-Lead Phase-Out Program (PLPOP) in Taiwan between 1979 and 2007. Environ Int. 40: 97-101, 2012.

Last Updated Date : 06/15/2023

Group Sampling Information
Sampling Media	Sampling Time (If there are exceptions they will be in Notes)	TWA Sampling Volume (If there are exceptions they will be in Notes)	TWA Flow Rate (If there are exceptions they will be in Notes)
mixed cellulose ester filter (MCEF) 0.8 microns	240-480 min	480-960 L	2 L/min

Analytes Sampling Information
Analytes	IMIS Code	Wipe Sampling
Arsenic, Inorganic	0260	Use Whatman smear tab
Cadmium	C141	Use Whatman smear tab
Lead	1591	Use Whatman smear tab

Notes

There is no need to contact SLTC before sampling.

Request any or all of these analytes together using the respective analyte code listed.

Elemental results for unrequested analytes in this group and other metals known to be compatible with the analytical procedure will be reported if significant amounts are found.

Gravimetric pre-analysis may be requested if a sample is collected on a pre-weighted PVC filter obtained from SLTC. In this case request the relevant gravimetric analyte code along with the other(s).

Group Sampling Information
Sampling Media	Sampling Time (If there are exceptions they will be in Notes)	TWA Sampling Volume (If there are exceptions they will be in Notes)	TWA Flow Rate (If there are exceptions they will be in Notes)
mixed cellulose ester filter (MCEF)	240-480 min	480-960 L	2 L/min

Analytes Sampling Information
Analytes	IMIS Code	Wipe Sampling	Incompatibilities
Iron*	I200	Yes, with a Ghost Wipe
Vanadium*	V125	Yes, with a Ghost Wipe
Zinc*	Z100	Yes, with a Ghost Wipe
Chromium, Metal & Insoluble salts (as Cr)**	0685	Yes, with a Ghost Wipe	Hexavalent Chromium
Cobalt, Metal, Dust & Fume (as Co)	0720	Yes, with a Ghost Wipe	Tungsten
Copper Dust & Mists (as Cu)	0730	Yes, with a Ghost Wipe
Copper Fume (as Cu)	0731	Yes, with a Ghost Wipe
Iron Oxide Fume	1520	Yes, with a Ghost Wipe
Manganese, Compounds & Fume (as Mn)***	1620	Yes, with a Ghost Wipe
Molybdenum, Dust & Insoluble compounds, (as Mo)	1790	Yes, with a Ghost Wipe
Nickel, Metal, & Insoluble compounds (as Ni)	1840	Yes, with a Ghost Wipe
Vanadium, Respirable Dust & Fume	2571	Yes, with a Ghost Wipe
Zinc Oxide Fume	2610	Contact SLTC for information

Notes

Request any or all of these analytes together. Entire group can be requested with analyte code 2587.

Results for unrequested analytes in this group will be reported if significant amount are found.

There is no need to contact SLTC before sampling.

This analysis can be pre-analyzed gravimetrically if collected on a pre-weighted PVC filter obtained from SLTC.

*These 3 codes are used for bulk sample results in place of their metal oxides.

**Please note that this is NOT hexavalent chromium.

***For Manganese STEL take only a 10-30 L sample.

Group Sampling Information
Sampling Media	Sampling Time (If there are exceptions they will be in Notes)	TWA Sampling Volume (If there are exceptions they will be in Notes)	TWA Flow Rate (If there are exceptions they will be in Notes)
mixed cellulose ester filter (MCEF) 0.8 microns	240-480 min	480-960 L	2 L/min

Analytes Sampling Information
Analytes	IMIS Code	Wipe Sampling
Antimony & Compounds (as Sb)	0230	Whatman smear tab
Cadmium	C141	Whatman smear tab
Copper, Fume (as Cu)	0730	Whatman smear tab
Lead	1591	Whatman smear tab
Silver, Metal & Soluble Compounds (as Ag)	2240	Whatman smear tab
Tin, Inorganic Compounds (except oxides) (as Sn)	2430	Whatman smear tab
Zinc Oxide Fume	2610	Whatman smear tab

Notes

For the entire suite of analytes listed in METALSSG-3, request analyte code S131.

There is no need to contact SLTC before sampling.

Elemental results for all analytes in this group will be reported if significant amounts are found.

Gravimetric pre-analysis may be requested if a sample is collected on a pre-weighted PVC filter obtained from SLTC. In this case, request the relevant gravimetric analyte code along with the other(s).

DIMETHOATE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

NICKEL, METAL & INSOLUBLE COMPOUNDS (as Ni)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

MOLYBDENUM, SOLUBLE COMPOUNDS†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

MOLYBDENUM, DUST & INSOLUBLE COMPOUNDS (as Mo)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

MERCURY (VAPOR)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

MERCURY (ARYL & INORGANIC COMPOUNDS)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

MERCURY (ORGANO) ALKYL COMPOUNDS†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

NITROGEN TRICHLORIDE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

MANGANESE, COMPOUNDS & FUME (as Mn)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

LEAD, INORGANIC (as Pb)‡

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References