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CAPTAFOL

Chemical Identification
CAS #	2425-06-1
Formula	C₁₀H₉Cl₁₄NO₂S
Synonyms	Captofol; Difolatan; N-((1,1,2,2-tetrachloroethyl)thio)-4-cyclohexene-1,2-dicarboximide; Folcid

Physical Properties
Physical description	White, crystalline solid with a slight, characteristic pungent odor.
Boiling point	decomposes	Molecular weight	349.1
Freezing point/melting point	321°F (decomposes)	Vapor pressure	0.000008 mmHg
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	0.1 mg/m³ (inhalable fraction and vapor) [2016]	PEL-TWA	0.1 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	Y	Skin notation	Y	Skin notation	Y
Notes: Not established		Notes: CARCINOGEN (Ca); See Appendix A		Notes: dermal sensitization (DSEN), respiratory sensitization (RSEN)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: IARC-2A, NIOSH-Ca, TLV-A4		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Captafol

NIOSH: Pocket Guide to Chemical Hazards - Captafol

Literature References

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

Last Updated Date : 12/21/2020

DIGLYCIDYL ETHER (DGE)†

Chemical Identification
CAS #	2238-07-5
Formula	C₆H₁₀O₃
Synonyms	diallyl ether dioxide; DGE; di(2,3-epoxypropyl) ether; 2-epoxypropyl ether; bis(2,3-epoxypropyl) ether

Physical Properties
Physical description	Colorless liquid with a strong, irritating odor.
Boiling point	500°F	Molecular weight	130.2
Freezing point/melting point		Vapor pressure	0.09 mmHg at 77°F
Flash point	147°F	Vapor density	3.78
Specific gravity	1.12	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	Industrial hygienists have been concerned about the presence of diglycidyl ether during the manufacture of the epoxy resin called diglycidyl ether of Bisphenol A. Diglycidyl ether is not present in this process. The starting compounds are epichlorohydrin and bisphenol A.
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	0.1 ppm (0.5 mg/m³)	TLV-TWA	0.01 ppm [2006]	PEL-TWA	0.1 ppm (0.5 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C	0.5 ppm (2.8 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: CARCINOGEN (Ca): See Appendix A		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	10 ppm
Carcinogenic classifications: NIOSH-Ca, TLV-A4		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Diglycidyl ether

NIOSH: Pocket Guide to Chemical Hazards - Diglycidyl ether

Literature References

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

Last Updated Date : 12/28/2020

FENAMIPHOS

Chemical Identification
CAS #	22224-92-6
Formula	C₁₃H₂₂NO₃PS
Synonyms	ethyl 3-methyl-4-(methylthio)phenyl-(1-methylethyl)phosphoramidate; Nemacur; phenamiphos

Physical Properties
Physical description	Off-white to tan, waxy solid.
Boiling point	decomposes	Molecular weight	303.39
Freezing point/melting point	121°F	Vapor pressure	0.00005 mmHg
Flash point		Vapor density
Specific gravity	1.14 at 39-120°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.)
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	0.1 mg/m³	TLV-TWA	0.05 mg/m³ (inhalable fraction and vapor) [2005]	PEL-TWA	0.1 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	Y	Skin notation	Y	Skin notation	Y
Notes: Not established		Notes:		Notes: BEI®		Notes:
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 - Fenamiphos

NIOSH: Pocket Guide to Chemical Hazards - Fenamiphos

Literature References

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

Last Updated Date : 12/29/2020

CHRYSENE†

Chemical Identification
CAS #	218-01-9
Formula	C₁₈H₁₂
Synonyms	1,2-benzophenanthrene, benzo(a)phenanthrene, 1,2,5,6-dibenzonaphthalene, 1,2-benzphenanthrene, benz(a)phenanthrene

Physical Properties
Physical description	Crystalline solid.
Boiling point	838°F	Molecular weight	228.29
Freezing point/melting point	489°F	Vapor pressure
Flash point		Vapor density
Specific gravity	1.274	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.)	0692
Sampling group
Sampler/Sampling media	Coal Tar Pitch Volatiles (CTPV) Sampling Filters and Cassette [SLTC109]
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	HPLC
Method reference	OSHA 58 (fully validated)
Notes	OSHA 58 is validated in conjunction with Coal Tar Pitch Volatiles and Coke Oven Emissions. These media are prepared by SLTC as needed and are not available for immediate shipment. Please allow time for SLTC to prepare these media prior to sampling.
Special requirements	After sampling, filter must be transferred to a vial with a Teflon-lined cap. Sample must be protected from direct sunlight.

^* 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	0.2 mg/m³	REL-TWA	0.1 mg/m³ (as coal tar pitch volatiles [cyclohexane-extractable fraction])	TLV-TWA	Exposure by all routes should be carefully controlled to levels as low as possible. [1990]	PEL-TWA	0.2 mg/m³ (as coal tar pitch volatiles)
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: Chrysene is a polynuclear aromatic hydrocarbon that OSHA has identified as one of a number of typical components of the benzene-soluble fraction of coal tar pitch volatiles. Other components include anthracene, benzo[a]pyrene, phenanthrene, acridine, and pyrene. Chrysene is characteristic of coal tar pitch volatiles (PEL is 0.2 mg/m³) and/or coke oven emissions (PEL is 0.15 mg/m³). See 29 CFR 1910.1000 Table Z-1, 29 CFR 1910.1029 - Coke oven emissions, and 1910.1002 - Coal tar pitch volatiles; interpretation of term.		Notes: CARCINOGEN (Ca). See Appendix A, NIOSH Potential Occupational Carcinogens and Appendix C, Supplementary Exposure Limits.		Notes: BEI®		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	80 mg/m³ (coal tar pitch volatiles)
Carcinogenic classifications: EPA-B2, IARC-2B, NIOSH-Ca, TLV-A3		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Chrysene

NIOSH: Pocket Guide to Chemical Hazards - Coal tar pitch volatiles

Literature References

NIOSH: Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number - GC0700000.
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Chrysene. See annual publication for most recent information.
EPA: Integrated Risk Information System - Chrysene (CASRN 218-01-9). March 1994.
Kizu, R., et al.: A role of aryl hydrocarbon receptor in the antiandrogenic effects of polycyclic aromatic hydrocarbons in LNCaP human prostate carcinoma cells. Arch. Toxicol. 77(6): 335-343, 2003.
Wenzel-Hartung, R., Brune, H., Grimmer, G., Germann, P., Timm, J. and Wosniok, W.: Evaluation of the carcinogenic potency of 4 environmental polycyclic aromatic compounds following intrapulmonary application in rats. Exp. Pathol. 40(4): 221-7, 1990.

Last Updated Date : 12/21/2020

ALLYL PROPYL DISULFIDE†

Chemical Identification
CAS #	2179-59-1
Formula	C₆H₁₂S₂
Synonyms	4,5-dithia-1-octene; onion oil; 2-propenyl propyl disulfide; propyl allyl disulfide

Physical Properties
Physical description	Pale-yellow liquid with a strong & irritating onion-like odor.
Boiling point		Molecular weight	148.3
Freezing point/melting point	5°F	Vapor pressure
Flash point	133.3°F	Vapor density
Specific gravity	0.93	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.)	0150
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	2 ppm (12 mg/m³)	REL-TWA	2 ppm (12 mg/m³)	TLV-TWA		PEL-TWA	2 ppm (12 mg/m³)
PEL-STEL		REL-STEL	3 ppm (18 mg/m³)	TLV-STEL		PEL-STEL	3 ppm (18 mg/m³)
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: Visit the ACGIH TLV site for specific data dermal sensitization (DSEN)		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 - Allyl propyl disulfide

NIOSH: Pocket Guide to Chemical Hazards - Allyl propyl disulfide

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Allyl propyl disulfide. See annual publication for most recent information.
Augusti, K.T. and Benaim, M.E.: Effect of essential oil of onion (allyl propyl disulphide) on blood glucose, free fatty acid and insulin levels of normal subjects. Clin. Chim. Acta 60(1): 121-123, 1975.
Papageorgiou, C., Corbet, J.P., Menezes-Brandao, F., Pecegueiro, M. and Benezra, C.: Allergic contact dermatitis to garlic (Allium sativum L.). Identification of the allergens: the role of mono-, di-, and trisulfides present in garlic. A comparative study in man and animal (guinea-pig). Arch. Dermatol. Res. 275(4): 229-234, 1983.
Pohanish, R.P. (editor): Allyl Propyl Disulfide. In, Sittig’s Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 106-107.

Last Updated Date : 03/27/2024

DIALLYL DISULFIDE

Chemical Identification
CAS #	2179-57-9
Formula	C₆H₁₀S₂
Synonyms	allyl disulfide; diallyldisulfide; disulfide, di-2-propenyl

Physical Properties
Physical description	Garlic odor.
Boiling point	174.2°F at 16 mmHg	Molecular weight	146.27
Freezing point/melting point		Vapor pressure
Flash point		Vapor density	1.010@59°F
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.)	D736
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

Last Updated Date : 12/22/2020

CESIUM HYDROXIDE

Chemical Identification
CAS #	21351-79-1
Formula	CsHO
Synonyms	cesium hydrate; cesium hydroxide dimer

Physical Properties
Physical description	Colorless or yellowish, crystalline solid.
Boiling point		Molecular weight	149.9
Freezing point/melting point	522°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	3.68	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	2 mg/m³	TLV-TWA	2 mg/m³ [1990]	PEL-TWA	2 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: Not listed		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Cesium hydroxide

NIOSH: Pocket Guide to Chemical Hazards - Cesium hydroxide

Literature References

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

Last Updated Date : 12/21/2020

METRIBUZIN

Chemical Identification
CAS #	21087-64-9
Formula	C₈H₁₄N₄OS
Synonyms	4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one

Physical Properties
Physical description	Colorless, crystalline solid.
Boiling point		Molecular weight	214.3
Freezing point/melting point	257°F	Vapor pressure	0.0000004 mmHg
Flash point		Vapor density
Specific gravity	1.31	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.)	A175
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^*
Sampling volume (TWA)^*	240 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 PV2044 (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	5 mg/m³	TLV-TWA	5 mg/m³ [1981]	PEL-TWA	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: Not established		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: TLV-A4, EPA-D		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Metribuzin

NIOSH: Pocket Guide to Chemical Hazards - Metribuzin

Literature References

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

Last Updated Date : 01/05/2021

EPN†

Chemical Identification
CAS #	2104-64-5
Formula	C₁₄H₁₄NO₄PS
Synonyms	ethyl p-nitrophenyl benzenethionophosphonate; o-ethyl o-(4-nitrophenyl) phenylphosphonothioate

Physical Properties
Physical description	Yellow solid with an aromatic odor.
Boiling point		Molecular weight	323.3
Freezing point/melting point	97°F	Vapor pressure	0.0003 mmHg
Flash point		Vapor density
Specific gravity	1.27	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	0.5 mg/m³	REL-TWA	0.5 mg/m³	TLV-TWA	0.1 mg/m³ (inhalable fraction and vapor) [2000]	PEL-TWA	0.1 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	Y	Skin notation	Y	Skin notation	Y	Skin notation	Y
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes: BEI®		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	5 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 - EPN

NIOSH: Pocket Guide to Chemical Hazards - EPN

Literature References

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

Last Updated Date : 12/28/2020

OSMIUM TETROXIDE†

Chemical Identification
CAS #	20816-12-0
Formula	O₄Os
Synonyms	osmic acid anhydride; osmium oxide

Physical Properties
Physical description	Colorless, crystalline solid or pale-yellow mass with an unpleasant, acrid, chlorine-like odor.
Boiling point	266°F	Molecular weight	254.2
Freezing point/melting point	105°F	Vapor pressure	7 mmHg
Flash point		Vapor density
Specific gravity	5.1	Ionization potential	12.60 eV
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	0.002 mg/m³	REL-TWA	0.0002 ppm (0.002 mg/m³)	TLV-TWA	0.0002 ppm [1979]	PEL-TWA	0.0002 ppm (0.002 mg/m³)
PEL-STEL		REL-STEL	0.0006 ppm (0.006 mg/m³)	TLV-STEL	0.0006 ppm [1979]	PEL-STEL	0.0006 ppm (0.006 mg/m³)
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	1 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 - Osmium tetroxide

NIOSH: Pocket Guide to Chemical Hazards - Osmium tetroxide

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Osmium tetroxide [20816-12-0], as Os. See annual publication for most recent information.

Last Updated Date : 01/31/2018

CAPTAFOL

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DIGLYCIDYL ETHER (DGE)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

FENAMIPHOS

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CHRYSENE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

ALLYL PROPYL DISULFIDE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DIALLYL DISULFIDE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CESIUM HYDROXIDE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

METRIBUZIN

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

EPN†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

OSMIUM TETROXIDE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References