Occupational Safety and Health Administration

HAFNIUM & COMPOUNDS†

Chemical Identification
CAS #	7440-58-6
Formula	Hf
Synonyms	Celtium; elemental hafnium; hafnium metal

Physical Properties
Physical description	Highly lustrous, ductile, grayish solid.
Boiling point	8316°F	Molecular weight	178.5
Freezing point/melting point	4041°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	13.31	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.)	1368
Sampling group
Sampler/Sampling media	Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0]
Sampling time^*	480 min
Sampling volume (TWA)^*	960 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	AAS
Method reference	OSHA ID-121 (fully validated)
Notes	OSHA staff to call the SLTC prior to sampling for detailed instructions.
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	0.5 mg/m³	REL-TWA	0.5 mg/m³	TLV-TWA	0.5 mg/m³ [1990]	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	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	50 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 - Hafnium powder, dry

NIOSH: Pocket Guide to Chemical Hazards - Hafnium

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Hafnium [7440-58-6] and compounds, as Hf. See annual publication for most recent information.

Last Updated Date : 12/14/2023

2-METHYLNAPHTHALENE

Chemical Identification
CAS #	91-57-6
Formula	C₁₁H₁₀₀
Synonyms	β-methylnaphthalene

Physical Properties
Physical description	White crystalline solid.
Boiling point	466-468°F	Molecular weight	142.2
Freezing point/melting point	94.3°F	Vapor pressure
Flash point	208°F	Vapor density
Specific gravity	1.0058	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	0.5 ppm [2006]	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	Y	Skin notation	NA
Notes: Not established		Notes: Not established		Notes:		Notes: Not established
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: TLV-A4		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - 2-Methylnaphthalene

NIOSH: Pocket Guide to Chemical Hazards - 2-Methylnaphthalene

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 1-Methylnaphthalene [90-12-0] and 2-Methylnaphthalene [91-57-6]. See annual publication for most recent information.
Agency for Toxic Substances and Disease Registry (ATSDR): Toxicological profile for naphthalene, 1-methynaphthalene and 2-methylnaphthalene. US Government Printing Office 1995-639-298, 200 pp., 1995.
Korsak, Z., Majcherek, W. and Rydzynski, K.: Toxic effects of acute inhalation exposure to 1-methylnaphthalene and 2-methylnaphthalene in experimental animals. Int. J. Occup. Med. Environ. Health 11(4): 335-342, 1998.
Melancon, M.J., Rickert, D.E. and Lech, J.J.: Metabolism of 2-methylnaphthalene in the rat in vivo. I. Identification of 2-naphthoylglycine. Drug Metab. Dispos. 10(2): 128-133, 1982.
Schultz, M.A., Morin, D., Chang, A.-M., Buckpitt, A.: Metabolic capabilities of CYP2F2 with various pulmonary toxicants and its relative abundance in mouse lung subcompartments. J. Pharmacol. Exp. Ther. 296(2): 510-519, 2001.
Teshima, R., Nagamatsu, K., Ikebuchi, H., Kido, Y. and Terao, T.: In vivo and in vitro metabolism of 2-methylnaphthalene in the guinea pig. Drug. Metab. Dispos. 11(2): 152-157, 1983.

Last Updated Date : 12/15/2020

COBALT METAL, DUST & FUME (as Co)†

Chemical Identification
CAS #	7440-48-4
Formula	Co
Synonyms	cobalt metal dust; cobalt metal fume; cobalt metal powder; elemental cobalt

Physical Properties
Physical description	Odorless, silver-gray to black solid.
Boiling point	5612°F	Molecular weight	58.9
Freezing point/melting point	2719°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	8.92	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.)	0720	0720
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]	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 min
Sampling volume (TWA)^*	480-960 L	480 L
Sampling flow rate (TWA)^*	2 L/min	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	ICP	ICP
Method reference	OSHA ID-125G (fully validated)	OSHA ID-213 (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.	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 the entire suite of analytes listed in METALSSG-2, request analyte code 2587.	For cobalt in cemented tungsten carbide or tungsten alloy matrices.

^* 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	Wipe with Whatman smear tab. [WHA1450993]
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	0.1 mg/m³	REL-TWA	0.05 mg/m³	TLV-TWA	0.02 mg/m³ (inhalable particulate matter) (cobalt [7440-48-4] and inorganic compounds, as Co) [2018]	PEL-TWA	0.020 mg/m³
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:		Notes: DSEN; RSEN; BEI®. Also refer to TLV: 0.005 mg/m³, respiratory sensitizer (RSEN), TLV-A2, BEI®; (hard metals containing cobalt [7440-48-4]) and tungsten carbide [12070-12-1], as Co) [2015]		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	20 mg/m³
Carcinogenic classifications: TLV-A3, IARC-2B		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Cobalt

NIOSH: Pocket Guide to Chemical Hazards - Cobalt metal dust and fume (as Co)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Cobalt [7440-48-4] and inorganic compounds, as Co. See annual publication for most recent information.
EPA: Hazard Summary - Cobalt Compounds
ATSDR: Toxicological Profile for Cobalt. 2004.
California Occupational Safety & Health Standards Board: Initial and Final Statement of Reasons February 3, 2001.
Lauwerys, R. and Lison, D.: Health risks associated with cobalt exposure - an overview. Sci. Total Environ. 150(1-3): 1-6, 1994.
Linnainmaa, M. and Kiilunen, M.: Urinary cobalt as a measure of exposure in the wet sharpening of hard metal and stellite blades. Int. Arch. Occup. Environ. Health 69(3): 193-200, 1997.
Lison, D., Bucher, J.-P., Swennen, B., Molders, J. and Lauwerys, R.: Biological monitoring of workers exposed to cobalt metal, salt, oxides, and hard metal dust. Occup. Environ. Med. 51(7): 447-450, 1994.
Lison, D: Human toxicity of cobalt-containing dust and experimental studies on the mechanism of interstitial lung disease (hard metal disaease). Crit Rev Toxicol. 26 (6): 585-6 16, 1996.
NIOSH: Occupational Hazard Assessment - Criteria for Controlling Occupational Exposure to Cobalt. 1981.

Last Updated Date : 06/20/2023

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.

DIMETHYL GLUTARATE

Chemical Identification
CAS #	1119-40-0
Formula	C₇H₁₂O₄
Synonyms	dimethyl pentanedioate; glutaric acid dimethyl ester; pentanedioc acid, dimethyl ester; glutaric acid

Physical Properties
Physical description	Colorless liquid
Boiling point	199.4-203°F	Molecular weight	160.17
Freezing point/melting point		Vapor pressure
Flash point	218°F	Vapor density
Specific gravity	1.087	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.)	D636
Sampling group
Sampler/Sampling media	CSC tube (100/50 mg) [SKC 226-01]
Sampling time^*	100 min
Sampling volume (TWA)^*	20 L
Sampling flow rate (TWA)^*	0.2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FID
Method reference	OSHA PV2020 (partially validated)
Notes	Samples should be refrigerated and analyzed within 2 weeks.
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 listed
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 - Dimethyl glutarate

NIOSH: Pocket Guide to Chemical Hazards - Dimethyl glutarate

Literature References

Last Updated Date : 12/28/2020

CHROMIUM VI COMPOUNDS (HEXAVALENT CHROMIUM)‡

Chemical Identification
CAS #	18540-29-9 (Cr VI), 7788-98-9, 7789-09-5, 12231-18-4, 12000-34-9, 10294-40-3, 54692-53-4, 1344-38-3, 13765-19-0, 14986-48-2, 12324-08-2, 12324-05-9, 14977-61-8, 8049-64-7, 7758-97-6, 1344-37-2, 7789-00-6, 7778-50-9, 7775-11-3, 12018-32-5, 10588-01-9, 7789-06-2, 54322-60-0, 12656-85-8, 14675-41-3, 13530-65-9, 1328-67-2, 1308-13-0, 66516-58-3, 15930-94-6, 12206-12-1, 37809-34-0, 12527-08-1, 11103-86-9
Formula	various
Synonyms	chromic anhydride, chromic oxide, chromium(VI) oxide (1:3), chromium trioxide, ammonium chromate, ammonium dichromate, barium chromate, basic lead chromate, calcium chromate, chromium [VI] chloride, chromium trioxide, chromyl chloride, lead chromate, potassium chromate, potassium dichromate, sodium chromate, sodium dichromate, strontium chromate, molybdenum orange, zinc chromate, zinc chromate hydroxides, zinc potassium chromates (hydroxides)

Physical Properties
Physical description	Very hard gray solid with a metallic luster.
Boiling point		Molecular weight
Freezing point/melting point		Vapor pressure
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.)	0689	0689 - WIPE
Sampling group
Sampler/Sampling media	For Welding and Painting Operations use Hexavalent Chromium Filters and Cassettes (37 mm PVC) [SLTC104] or (25 mm PVC) [SLTC105] [SLTC104]; For Plating Operations use 37 mm Quartz Fiber Filter coated with 1% NaOH [SLTC106] [SLTC106]	Hexavalent Chromium Filters (For Wipe Samples Only) [SLTC107]
Sampling time^*	480 min
Sampling volume (TWA)^*	960 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	IC	IC-UV
Method reference	OSHA ID-215v.2 (fully validated)	OSHA W4001 (fully validated)
Notes	All samples taken for CHROMIUM VI COMPOUNDS should be shipped to the OSHA SLTC within 24 hours after sampling by overnight delivery for stabilization and analysis.	All samples taken for CHROMIUM VI COMPOUNDS should be shipped to the OSHA SLTC within 24 hours after sampling by overnight delivery for stabilization and analysis.
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	See the "Monitoring Methods Used by OSHA" section above for details.
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	5 µg/m³ [2.5 µg/m³ Action Level]	REL-TWA	0.0002 mg/m³ (8 hr TWA)	TLV-TWA	0.0002 mg/m³ (inhalable particulate matter) [2017]	PEL-TWA	0.005 mg/m³
PEL-STEL		REL-STEL		TLV-STEL	0.0005 mg/m³ (inhalable particulate matter) [2017]	PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C	0.1 mg/m³
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: OSHA's Chromium (VI) standard applies to occupational exposures to any chromium species with a valence of positive six, regardless of form or compound. See 29 CFR 1910.1026 Chromium (VI). See 29 CFR 1910.1000 Table Z-1 and/or 29 CFR 1910.1000 Table Z-2for any operations or sectors where the exposure limits in §1910.1026 are stayed or otherwise not in effect.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens and Appendix C, Supplementary Exposure Limits.		Notes: Skin, dermal sensitization (DSEN) and respiratory sensitization (RSEN) (for water-soluble compounds)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: EPA-A; K; D; CBD, IARC-1, NIOSH-Ca, NTP-K, TLV-A1		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Chromium

NIOSH: Pocket Guide to Chemical Hazards - Chromic acid and chromates

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Chromium and inorganic compounds: Hexavalent chromium compounds, as Cr(VI), and water-soluble compounds. See annual publication for most recent information.
ATSDR: Toxicological profile for chromium. September 2012.
Balachandar V, Arun M, Mohana Devi S, Velmurugan P, Manikantan P, Karthick Kumar A, Sasikala K, Venkatesan C. Evaluation of the genetic alterations in direct and indirect exposures of hexavalent chromium [Cr(VI)] in leather tanning industry workers North Arcot District, South India. Int Arch Occup Environ Health. 83(7):791-801, 2010.
NIOSH: Criteria for a Recommended Standard - Occupational Exposure to Chromium (VI).
NIOSH: Draft Criteria Document Update - Occupational Exposure to Hexavalent Chromium. September 2008.
Zhang XH, Zhang X, Wang XC, Jin LF, Yang ZP, Jiang CX, Chen Q, Ren XB, Cao JZ, Wang Q, Zhu YM. Chronic occupational exposure to hexavalent chromium causes DNA damage in electroplating workers. BMC Public Health. 11:224. 2011.

Last Updated Date : 11/21/2022

CHROMIUM(III) COMPOUNDS (as Cr)†

Chemical Identification
CAS #	7440-47-3
Formula	Cr
Synonyms	Synonyms vary depending upon the specific Chromium(III) compound. [Note: Chromium(III) compounds include soluble chromic salts.]

Physical Properties
Physical description	Appearance and odor vary depending upon the specific compound.
Boiling point	4788°F	Molecular weight	52
Freezing point/melting point	3452°F	Vapor pressure	depends upon the specific compound
Flash point		Vapor density
Specific gravity	7.2	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	See CHROMIUM, METAL & INSOLUBLE SALTS
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	0.5 mg/m³	REL-TWA	0.5 mg/m³	TLV-TWA	0.003 mg/m³ (inhalable particulate matter) [2017]	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	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes: See Appendix C, Supplementary Exposure Limits. [Chromic Acid and Chromates (as CrO₃), Chromium(II) and Chromium(III) Compounds (as Cr), and Chromium Metal (as Cr)]		Notes: dermal senstization (DSEN), respiratory sensitization (RSEN) (for water-soluble compounds)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	250 mg/m³
Carcinogenic classifications: EPA-D; TLV-A4; IARC-3		Notes: as Cr
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Chromium

NIOSH: Pocket Guide to Chemical Hazards - Chromium(III) compounds (as Cr)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Chromium, and inorganic compounds: Trivalent chromium compounds, as Cr (III). See annual publication for most recent information.

Last Updated Date : 01/29/2021

CHROMIUM(II) COMPOUNDS (as Cr)†

Chemical Identification
CAS #	7440-47-3
Formula	Cr
Synonyms	Synonyms vary depending upon the specific Chromium(II) compound. [Note: Chromium(II) compounds include soluble chromous salts.]

Physical Properties
Physical description	Appearance and odor vary depending upon the specific compound.
Boiling point	4788°F	Molecular weight	52
Freezing point/melting point	3452°F	Vapor pressure	depends upon the specific compound
Flash point		Vapor density
Specific gravity	7.2	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	See CHROMIUM, METAL & INSOLUBLE SALTS
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	0.5 mg/m³	REL-TWA	0.5 mg/m³	TLV-TWA	0.5 mg/m³ (inhalable particulate matter) [2017]	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	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes: See Appendix C, Supplementary Exposure Limits. [Chromic Acid and Chromates (as CrO₃), Chromium(II) and Chromium(III) Compounds (as Cr), and Chromium Metal (as Cr)]		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	250 mg/m³
Carcinogenic classifications: EPA-D; IARC-3		Notes: as Cr
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Chromium

NIOSH: Pocket Guide to Chemical Hazards - Chromium metal

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Chromium, and inorganic compounds: Metallic chromium as Cr(0). See annual publication for most recent information.

Last Updated Date : 06/26/2023

CHROMIUM, METAL & INSOLUBLE SALTS (as Cr)†

Chemical Identification
CAS #	7440-47-3
Formula	Cr
Synonyms	chrome; chromium

Physical Properties
Physical description	Blue-white to steel-gray, lustrous, brittle, hard, odorless solid.
Boiling point	4788°F	Molecular weight	52
Freezing point/melting point	3452°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	7.14	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.)	0685
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	0.5 mg/m³	TLV-TWA	0.5 mg/m³ (inhalable particulate matter) [2017]	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	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	250 mg/m³
Carcinogenic classifications: IARC-3, EPA-A; K; D; CBD		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Chromium

NIOSH: Pocket Guide to Chemical Hazards - Chromium metal

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Chromium, and inorganic compounds: Metallic chromium, as Cr(0). See annual publication for most recent information.
EPA: Hazard Summary - Chromium
ATSDR: Toxicological Profile for Chromium. 2012.
NIOSH: Recommendations for Occupational Safety and Health - Compendium of Policy Documents and Statements. 1992.

Last Updated Date : 12/21/2020

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.

GRAPHITE (SYNTHETIC)†

Chemical Identification
CAS #	7440-44-0
Formula	C
Synonyms	activated carbon [Note: Also see specific listing for Graphite (natural).]

Physical Properties
Physical description	Black grains that have been treated to improve absorptive ability.
Boiling point		Molecular weight
Freezing point/melting point		Vapor pressure	0 mmHg (approx)
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.)	1366 (total); request using analyte code 9135	G100 (resp); request using analyte code 9130
Sampling group
Sampler/Sampling media	Tared low-ash 37 mm PVC filter, 5 microns [SLTC108]	Tared Low-Ash 37 mm PVC Filter, 5 microns in 3-piece cassette with a Lumsden-Lynch vertical elutriator [SLTC114]
Sampling time^*	240-480 min	240-480 min
Sampling volume (TWA)^*	960 L	816 L
Sampling flow rate (TWA)^*	2 L/min	1.7 L/min ±5%
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	Gravimetric	Gravimetric
Method reference	OSHA PV2121 (partially validated)	OSHA PV2121 (partially 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.	If the filter is not overloaded, samples can be collected up to an 8-hour period. 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.
Special requirements	FOR TOTAL DUST SAMPLES, DO NOT USE A CYCLONE!!

^* 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	15 mg/m³ (total dust), 5 mg/m³ (respirable fraction)	REL-TWA		TLV-TWA	2 mg/m³ (respirable particulate matter) [1988]	PEL-TWA	10 mg/m³ (total dust), 5 mg/m³ (respirable fraction)
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: See Appendix D - Substances with No Established RELs.		Notes:		Notes: See footnote [n].
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: Not listed		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Carbon, activated

NIOSH: Pocket Guide to Chemical Hazards - Graphite (synthetic)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Graphite (all forms except graphite fibers). See annual publication for most recent information.
Lam, C.-W., James, J.T., McCluskey, R. and Hunter, R.L.: Pulmonary toxicity of single-wall carbon nanotubes in mice 7 and 90 days after intratracheal instillation. Toxicol. Sci. 77(1): 126-134, 2004.
Pohanish, R.P. (editor): Graphite. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1216-1217.
Shevdova, A.A., et al.: Exposure to carbon nanotube material: assessment of nanotube cytotoxicity using human keratinocyte cells. J. Toxicol. Environ. Health A 66(20): 1909-1926, 2003.

Last Updated Date : 01/29/2021

CADMIUM‡

Chemical Identification
CAS #	7440-43-9 (elemental)
Formula	Cd
Synonyms	cadmium metal; synonyms vary depending upon the specific cadmium compound.

Physical Properties
Physical description	Silver-white, blue-tinged lustrous, odorless solid.
Boiling point	1409°F	Molecular weight	112.4
Freezing point/melting point	610°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	8.65 (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.)	C141 (high sensitivity)	C141	C141
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)^*	30 L		30 L
Sampling flow rate (STEL/Peak/C)^*	2 L/min		2 L/min
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 cadmium is the only analyte of interest, use the single analyte code C141. If the filter is not overloaded, samples may be collected up to an 8-hour period. If As, Cd, Cu, Fe, or Zn are detected, results will be provided.	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	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	5 µg/m³ [2.5 µg/m³ Action Level]	REL-TWA		TLV-TWA		PEL-TWA	0.005 mg/m³
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 1910.1027 and 29 CFR 1926.1127 (Construction) for additional information. The PELs listed in 29 CFR 1910.1000 Table Z-2 for cadmium fume and cadmium dust apply to any operations or sectors for which the Cadmium standard, CFR 1910.1027, is stayed or otherwise not in effect.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION (LOQ 0.1 mg/m³). See Appendix A, NIOSH Potential Occupational Carcinogens		Notes: Visit the ACGIH TLV site for specific data BEI®		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	9 mg/m³
Carcinogenic classifications: IARC-1, NIOSH-Ca, NTP-K, OSHA-Ca, TLV-A2, EPA-B1		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Cadmium

NIOSH: Pocket Guide to Chemical Hazards - Cadmium dust (as Cd)

Literature References

EPA: Hazard Summary - Cadmium.
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) Cadmium [7440-43-9] and compounds, as Cd. See annual publication for most recent information.
Nawrot T, Geusens P, Nulens TS, Nemery B. Occupational cadmium exposure and calcium excretion, bone density, and osteoporosis in men. J Bone Miner Res. 25(6):1441-5, June 2010.
NIOSH: Criteria for a Recommended Standard - Occupational Exposure to Cadmium. 1976.
NIOSH: Occupational Health Guideline for Cadmium Dust (as Cadmium). 1978.
NTP: Report on Carcinogens Cadmium and Cadmium Compounds
OSHA: Occupational Safety and Health Standards, Substance Safety Data Sheet - Cadmium. 1910.1027 App A
Poreba R, Gac P, Poreba M, Derkacz A, Pilecki W, Antonowicz-Juchniewicz J, Andrzejak R. Relationship between chronic exposure to lead, cadmium and manganese, blood pressure values and incidence of arterial hypertension. Med Pr. 61(1):5-14, 2010.

Last Updated Date : 04/08/2024

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).

HAFNIUM & COMPOUNDS†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

2-METHYLNAPHTHALENE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

COBALT METAL, DUST & FUME (as Co)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DIMETHYL GLUTARATE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CHROMIUM VI COMPOUNDS (HEXAVALENT CHROMIUM)‡

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CHROMIUM(III) COMPOUNDS (as Cr)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CHROMIUM(II) COMPOUNDS (as Cr)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CHROMIUM, METAL & INSOLUBLE SALTS (as Cr)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

GRAPHITE (SYNTHETIC)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CADMIUM‡

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References