Occupational Safety and Health Administration

TANTALUM, METAL & OXIDE †

Chemical Identification
CAS #	7440-25-7
Formula	Ta
Synonyms	tantalum metal: Tantalum-181. Synonyms of other tantalum dusts (including oxide dusts) vary depending upon the specific compound.

Physical Properties
Physical description	Steel-blue to gray solid or black, odorless powder.
Boiling point	9797°F	Molecular weight	180.9
Freezing point/melting point	5425°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	16.65 (metal) 14.40 (powder)	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.)	2325 (total); request using analyte code 9135
Sampling group
Sampler/Sampling media	Tared low-ash 37 mm PVC filter, 5 microns [SLTC108]
Sampling time^*	240-480 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	Gravimetric
Method reference	OSHA PV2121 (partially validated)
Notes	Samples are analyzed gravimetrically. Results will be qualified based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes; no further work on the sample will be performed due to method limitations.
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PEL-TWA	5 mg/m³	REL-TWA	5 mg/m³	TLV-TWA	Withdrawn in 2010 for insufficient data.	PEL-TWA	5 mg/m³
PEL-STEL		REL-STEL	10 mg/m³	TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	NA	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	2500 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 - Tantalum (metal and oxide dust)

NIOSH: Pocket Guide to Chemical Hazards - Tantalum (metal and oxide dust)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Appendix G: Substances Whose Adopted Documentation and TLVs Were Withdrawn For a Variety of Reasons, Including Insufficient Data, Regrouping, Etc. Tantalum [7440-25-7] and Tantalum oxide [1314-61-0] dusts, as Ta. See annual publication for most recent information.

Last Updated Date : 01/22/2021

SILVER, METAL & SOLUBLE COMPOUNDS (as Ag)†

Chemical Identification
CAS #	7440-22-4
Formula	Ag
Synonyms	silver metal; argentum. Soluble silver compounds vary depending upon the specific compound, such as silver nitrate (AgNO₃)

Physical Properties
Physical description	Silvery metallic solid.
Boiling point	4014°F	Molecular weight	107.93
Freezing point/melting point	1763.5°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	10.5 at 68°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.)	2240
Sampling group	METALSSG-3
Sampler/Sampling media	Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [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-MS
Method reference	OSHA ID-206 (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	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	Wipe with Whatman smear tab. [WHA1450993]
Bulk Method	No

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	Silver and compounds, metal, dust and fume: 0.1 mg/m³, Soluble compounds as Ag: 0.01 mg/m³ [1992]	PEL-TWA	0.01 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation		Skin notation		Skin notation		Skin notation
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	10 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 - Silver

NIOSH: Pocket Guide to Chemical Hazards - Silver (metal dust and soluble compounds, as Ag)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Silver [7440-22-4] and compounds. See annual publication for most recent information.
Armitage, S.A., White, M.A. and Wilson, H.K. The determination of silver in whole blood and its application to biological monitoring of occupationally exposed groups. Ann. Occup. Hyg. 40(3): 331-338, 1996.
Drake, P.L. and Hazelwood, K.J. Exposure-related health effects of silver and silver compounds: a review. Ann. Occup. Hyg. June 17, 2005.
EPA: IRIS - Silver (CASRN 7440-22-4).
Foldbjerg, R., Dang, DA., Autrup, H. Cytotoxicity and genotoxicity of silver nanoparticles in the human lung cancer cell line, A549. Arch Toxicol. 85(7): 743-750, 2011.
Kayarkar, R., Parker, A.J. and Geopel, J.R. The Sheffield nose - an occupational disease? Rhinology 41(2): 125-126, 2003.
NIOSH: Occupational Health Guideline - Silver Metal and Soluble Silver Compounds. September 1978.
Rosa, C. OSHA compliance issues. Overexposure to silver on a programmed lead inspection. J. Occup. Environ. Hyg. 1(9): D93-95, 2004.
Sanchez-Huerta, V., De Wit-Carter, G., Hernandez-Quintela, E. and Naranjo-Tackman, R. Occupational corneal argyrosis in art silver solderers. Cornea 22(7): 604-611, 2003.
Wasowicz, W. et al. Evaluation of biological effects of nanomaterials. Part I. Cyto- and genotoxicity of nanosilver composites applied in textile technologies. Int J Occup Med Environ Health. 24(4): 248-358, 2011.

Last Updated Date : 03/06/2024

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
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).

DIPROPYL DISULFIDE

Chemical Identification
CAS #	629-19-6
Formula	C₆H₁₄S₂
Synonyms	di-n-propyl disulfide; propyl disulfide; propyl disuphide

Physical Properties
Physical description	Colorless to pale yellow odorous liquid.
Boiling point	383°F	Molecular weight	150.3
Freezing point/melting point	-122.1°F	Vapor pressure
Flash point	151°F	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.)	D626
Sampling group
Sampler/Sampling media	Chromosorb® 106 (100/50 mg) [SKC 226-110]
Sampling time^*	50 min
Sampling volume (TWA)^*	10 L
Sampling flow rate (TWA)^*	0.2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FPD
Method reference	OSHA PV2086 (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 - Not listed

NIOSH: Pocket Guide to Chemical Hazards - Not listed

Literature References

Acros Organics.: Material Safety Data Sheet: Propyl disulfide, 99%.
Guyonnet, D., Siess, M.H., Le Bon, A.M. and Suschetet, M.: Modulation of phase II enzymes by organosulfur compounds from allium vegetables in rat tissues. Toxicol. Appl. Pharmacol. 154(1): 50-58, 1999.
Nielsen, G.S. and Poll, L.: Determination of odor active aroma compounds in freshly cut leek (Allium ampeloprasum Var. bulga) and in long-term stored frozen unblanched and blanched leek slices by gas chromatography olfactometry analysis. J. Agric. Food Chem. 52(6): 1642-1646, 2004.
O'Neill, D.H. and Phillips, V.R.: A review of the control of odour nuisance from livestock buildings: Part 3. Properties of the odorous substances which have been identified in livestock wastes or in the air around them. J. Agric. Eng. Res. 53(1): 23-50, 1992.
Teyssier, C. and Siess, M.H.: Metabolism of dipropyl disulfide by rat liver phase I and phase II enzymes and by isolated perfused rat liver. Drug Metab. Dispos. 28(6): 648-654, 2000.

Last Updated Date : 12/28/2020

SILICON†

Chemical Identification
CAS #	7440-21-3
Formula	Si
Synonyms	elemental silicon

Physical Properties
Physical description	Black to gray, lustrous, needle-like crystals.
Boiling point	4271°F	Molecular weight	28.1
Freezing point/melting point	2570°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	2.33 at 77°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.)	2235 (total); request using analyte code 9135	S120 (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, preceded by 10 mm nylon Dorr-Oliver cyclone for respirable samples. [SLTC108]
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	10 mg/m³ (total dust), 5 mg/m³ (resp)	TLV-TWA		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:		Notes: Not established; see individual compounds and/or Appendix B of the TLV booklet for guidelines.		Notes: As Particulates not otherwise regulated, 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 - Silicon powder, amorphous

NIOSH: Pocket Guide to Chemical Hazards - Silicon

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Particles (insoluble or poorly soluble) Not Otherwise Specified (PNOS). See annual publication for most recent information.

Last Updated Date : 01/12/2021

RHODIUM, SOLUBLE COMPOUNDS†

Chemical Identification
CAS #	7440-16-6
Formula	Rh
Synonyms	Synonyms vary depending upon the specific soluble rhodium compound.

Physical Properties
Physical description	Appearance and odor vary depending upon the specific soluble rhodium compound.
Boiling point		Molecular weight
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	0.001 mg/m³	REL-TWA	0.001 mg/m³	TLV-TWA	0.01 mg/m³ [1981]	PEL-TWA	0.001 mg/m³ (soluble salts, as Rh)
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	2 mg/m³
Carcinogenic classifications: TLV-A4		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Rhodium (soluble compounds, as Rh)

NIOSH: Pocket Guide to Chemical Hazards - Rhodium (soluble compounds, as Rh)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Rhodium [7440-16-6], as Rh. Soluble compounds. See annual publication for most recent information.

Last Updated Date : 01/29/2021

RHODIUM, METAL & INSOLUBLE COMPOUNDS†

Chemical Identification
CAS #	7440-16-6
Formula	Rh (metal)
Synonyms	rhodium metal: elemental rhodium. Synonyms of other insoluble rhodium compounds vary depending upon the specific compound.

Physical Properties
Physical description	White, hard, ductile, malleable solid with a bluish-gray luster. Metal fume is a reddish-gray to black dust-like powder.
Boiling point	6741°F	Molecular weight	102.9
Freezing point/melting point	3571°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	12.41 (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.)
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	0.1 mg/m³	REL-TWA	0.1 mg/m³	TLV-TWA	1 mg/m³ [1981]	PEL-TWA	0.1 mg/m³ (insoluble compounds, as Rh)
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	100 mg/m³
Carcinogenic classifications: TLV-A4		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Rhodium (metal fume)

NIOSH: Pocket Guide to Chemical Hazards - Rhodium (metal fume and insoluble compounds, as Rh)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Rhodium [7440-16-6], as Rh. Metal and Insoluble compounds. See annual publication for most recent information.

Last Updated Date : 01/11/2021

DIMETHYL ADIPATE

Chemical Identification
CAS #	627-93-0
Formula	C₈H₁₄O₄
Synonyms	dimethyl hexanedioate; methyl adipate; hexanedioic acid, dimethyl ester

Physical Properties
Physical description	Colorless liquid.
Boiling point	228.2-230°F at 14 mmHg	Molecular weight	174.2
Freezing point/melting point	46.4°F	Vapor pressure
Flash point	225°F	Vapor density
Specific gravity	1.063	Ionization potential
Lower explosive limit (LEL)	0.81%	Upper explosive limit (UEL)	8.1%
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.)	D649
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 PV2019 (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 - Dimethyl adipate

NIOSH: Pocket Guide to Chemical Hazards - Dimethyl adipate

Literature References

Last Updated Date : 12/28/2020

PLATINUM SOLUBLE SALTS†

Chemical Identification
CAS #	7440-06-4
Formula	Pt
Synonyms	Synonyms vary depending upon the specific soluble platinum salt.

Physical Properties
Physical description	Appearance and odor vary depending upon the specific soluble platinum salt.
Boiling point		Molecular weight
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.)	2130
Sampling group
Sampler/Sampling media	Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (25 or 37 mm) [MAWP025A0 or MAWP037A0]
Sampling time^*	50-67 min
Sampling volume (TWA)^*	100 L
Sampling flow rate (TWA)^*	1.5-2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	ICP-MS
Method reference	OSHA ID-130SG (partially 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	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	0.002 mg/m³	REL-TWA	0.002 mg/m³	TLV-TWA	0.002 mg/m³ [1979]	PEL-TWA	0.002 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	4 mg/m³
Carcinogenic classifications:		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Platinum

NIOSH: Pocket Guide to Chemical Hazards - Platinum (soluble salts, as Pt)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Platinum [7440-06-4] and soluble salts, Soluble salts, as Pt. See annual publication for most recent information.

Last Updated Date : 01/29/2021

PLATINUM METAL

Chemical Identification
CAS #	7440-06-4
Formula	Pt
Synonyms	platinum black; platinum metal; platinum sponge

Physical Properties
Physical description	Silvery, whitish-gray, malleable, ductile metal.
Boiling point	6921°F	Molecular weight	195.1
Freezing point/melting point	3222°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	21.45	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.)	P211
Sampling group
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	AAS/AES
Method reference	OSHA ID-121 (fully validated)
Notes	OSHA staff, please contact the SLTC before sampling.
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	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		REL-TWA	1 mg/m³	TLV-TWA	1 mg/m³ [1979]	PEL-TWA	1 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	N	Skin notation	N	Skin notation	N
Notes: Not established		Notes:		Notes:		Notes:
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 - Platinum

NIOSH: Pocket Guide to Chemical Hazards - Platinum

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Platinum [7440-06-4] and soluble salts, Metal. See annual publication for most recent information.

Last Updated Date : 01/08/2021

NICKEL, SOLUBLE COMPOUNDS†

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.)	1842
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^*	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. 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	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	0.1 mg/m³ (inhalable particulate matter) [1996]	PEL-TWA	0.05 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: 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 (as Ni)
Carcinogenic classifications: NTP-K, TLV-A4		Notes:
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.
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 Profiles - Nickel. Updated August, 2005. (accessed 7/1/09)
Chashschin VP, Artunina GP, Norseth T. Congential defects, abortion and other health effects in nickel refinery workers. Science Total Environ, 1994; 148:287-91.
Das KK, Das SN, Dhundasi SA. Nickel, its adverse health effects & oxidative stress. Indian J Med Res, 2008; 128:412-25. (good review)
EPA IRIS, Nickel, soluble salts (CASRN Various). Last updated 1/10/08. (accessed 6/9/09)
Lu S, Duffin R, Poland C, Daly P, Murphy F, Drost E, MacNee W, Stone V, Donaldson K. Efficacy of simple short-term in vitro assays for predicting the potential of metal oxide nanoparticles to cause pulmonary inflammation. Environ Health Persp, 2009; 117:241-7.
Rom WN. Environmental and Occupational Medicine, 4^th Edition. Chapter 68. Nickel Compounds. Lippincott, Williams & Wilkins, 2007.
Salnikow K, Zhitkovich. Genetic and epigenetic mechanisms in metal carcinogenesis and cocarcinogenesis: nickel, arsenic and chromium. Chem Res Toxicol, 2008; 21:28-44.
Vaktskjold A, Talykova LV, Chashehin VP, Odland JO, Nieboer E. Spontaneous abortions among nickel-exposed female refinery workers. Int J Environ Health Res, 2008; 18:99-115.

Last Updated Date : 01/05/2021

TANTALUM, METAL & OXIDE †

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

SILVER, METAL & SOLUBLE COMPOUNDS (as Ag)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DIPROPYL DISULFIDE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

SILICON†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

RHODIUM, 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

RHODIUM, METAL & INSOLUBLE COMPOUNDS†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DIMETHYL ADIPATE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

PLATINUM SOLUBLE SALTS†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

PLATINUM METAL

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

NICKEL, 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