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O-DIANISIDINE

Chemical Identification
CAS #	119-90-4
Formula	C₁₄H₁₆N₂O₂
Synonyms	dianisidine; 3,3'-dianisidine; 3,3'-dimethoxybenzidine

Physical Properties
Physical description	Colorless crystals that turn a violet color on standing.
Boiling point		Molecular weight	244.3
Freezing point/melting point	279°F	Vapor pressure
Flash point	403°F	Vapor density	8.5
Specific gravity		Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	1	NFPA fire rating	1
NFPA reactivity rating	0	NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	0873
Sampling group
Sampler/Sampling media	2 GFFs (37 mm) coated with sulfuric acid, in 3-piece cassette, separated by the ring section [SKC 225-9004]
Sampling time^*	100 min
Sampling volume (TWA)^*	100 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*	15 L
Sampling flow rate (STEL/Peak/C)^*	1 L/min
Analytical method instruments	GC-ECD
Method reference	OSHA 71 (fully validated)
Notes	Within ten hours after sampling, transfer filter to glass vial containing 2 mL deionized water. Sample must be shipped and stored at 0°C or colder. Analyze as soon as possible.
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	N	Skin notation	NA	Skin notation	NA
Notes: Not established		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens. See also, Appendix C, Supplementary Exposure Limits.		Notes: Not established		Notes: Not established
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - 3,3'-Dimethoxybenzidine

NIOSH: Pocket Guide to Chemical Hazards - o-Dianisidine

Literature References

Last Updated Date : 01/07/2021

TERT-BUTYL CHROMATE‡

Chemical Identification
CAS #	1189-85-1
Formula	C₈H₁₈CrO₄
Synonyms	di-tert-butyl ester of chromic acid

Physical Properties
Physical description	Liquid.
Boiling point		Molecular weight	230.3
Freezing point/melting point	23-32°F	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
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 VI COMPOUNDS (HEXAVALENT CHROMIUM)
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	0.001 mg/m³	TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C	0.1 mg/m³ (as CrO₃), 0.005 mg/m³ (as Cr)
Skin notation	Y	Skin notation	N	Skin notation	Y	Skin notation	Y
Notes: OSHA's chromium (VI) standard applies to all occupational exposures to any chromium species with a valence of positive six, regardless of form or compound, including chromates and chromic acid. See CHROMIUM VI COMPOUNDS (HEXAVALENT CHROMIUM).		Notes: CARCINOGEN (Ca) as Cr(VI): See Appendix A, NIOSH Potential Occupational Carcinogens. See also 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: Visit the ACGIH TLV site for specific data		Notes: See Sections 1532.2, 5206 & 8359.
Health factors: See NIH-NLM PubChem.		IDLH	15 mg/m³
Carcinogenic classifications: NIOSH-Ca		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - T-Butyl chromate

NIOSH: Pocket Guide to Chemical Hazards - tert-Butyl chromate

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - tert-Butyl chromate, as CrO₃. See annual publication for most recent information.

Last Updated Date : 04/08/2024

2,4,6-TRINITROTOLUENE†

Chemical Identification
CAS #	118-96-7
Formula	C₇H₅N₃O₆
Synonyms	1-methyl-2,4,6-trinitrobenzene; TNT; trinitrotoluene; sym-trinitrotoluene; trinitrotoluol

Physical Properties
Physical description	Colorless to pale-yellow, odorless solid or crushed flakes.
Boiling point	464°F (explodes)	Molecular weight	227.15
Freezing point/melting point	177.6°F	Vapor pressure	0.0002 mmHg
Flash point	explodes	Vapor density
Specific gravity	1.65	Ionization potential	10.59 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.)	2530
Sampling group
Sampler/Sampling media	OSHA versatile sampler (OVS-Tenax®) - 13 mm Tenax® tube (140/70 mg) with GFF enclosed [SKC 226-56]
Sampling time^*	60 min
Sampling volume (TWA)^*	60 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-TEA
Method reference	OSHA 44 (fully validated)
Notes	The air sampling pump must be certified by NIOSH and MSHA as safe for use in coal mines.
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	1.5 mg/m³	REL-TWA	0.5 mg/m³	TLV-TWA	0.1 mg/m³ (inhalable fraction and vapor) [1984]	PEL-TWA	0.5 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
Carcinogenic classifications: IARC-3, EPA-C		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - TNT, wetted with not less than 30% water

NIOSH: Pocket Guide to Chemical Hazards - 2,4,6-Trinitrotoluene

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 2,4,6-Trinitrotoluene. See annual publication for most recent information.

Last Updated Date : 12/15/2020

HEXACHLOROBENZENE

Chemical Identification
CAS #	118-74-1
Formula	C₆Cl₆
Synonyms	HCB; perchlorobenzene; pentachlorophenylchloride; phenyl perchloryl

Physical Properties
Physical description	A white crystalline substance.
Boiling point	612°F	Molecular weight	284.78
Freezing point/melting point	441-444°F	Vapor pressure	1 mmHg at 237.9°F
Flash point	468°F	Vapor density	9.8
Specific gravity	2.044 at 75.2°F	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	1	NFPA fire rating	1
NFPA reactivity rating	0	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	0.002 mg/m³ [1994]	PEL-TWA	0.002 mg/m³
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	Y
Notes: Not established		Notes: Not established		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: IARC-2B, NTP-R, TLV-A3, EPA-B2		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Hexachlorobenzene

NIOSH: Pocket Guide to Chemical Hazards - Hexachlorobenzene

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Hexachlorobenzene. See annual publication for most recent information.
Agency for Toxic Substances and Disease Registry (ATSDR): Toxicological profile for hexachlorobenzene. Atlanta: ATSDR, 2002, 357 pp.
EPA Air Toxics Website: Hexachlorobenzene. U.S. Environmental Protection Agency Technology Transfer Network.
Pohanish, R.P. (editor): Hexachlorobenzene. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1234-1236.

Last Updated Date : 12/31/2020

1,3-DICHLORO-5,5-DIMETHYL HYDANTOIN†

Chemical Identification
CAS #	118-52-5
Formula	C₅H₆Cl₂N₂O₂
Synonyms	Dactin; DDH; Halane

Physical Properties
Physical description	White powder with a chlorine-like odor.
Boiling point	212° (sublimes)	Molecular weight	197.0
Freezing point/melting point	270°F	Vapor pressure
Flash point	346°F	Vapor density	6.8
Specific gravity	1.5	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	0.2 mg/m³	REL-TWA	0.2 mg/m³	TLV-TWA	0.2 mg/m³ [1979]	PEL-TWA	0.2 mg/m³
PEL-STEL		REL-STEL	0.4 mg/m³	TLV-STEL	0.4 mg/m³ [1979]	PEL-STEL	0.4 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	5 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 - 1,3-Dichloro-5,5-dimethylhydantoin

NIOSH: Pocket Guide to Chemical Hazards - 1,3-Dichloro-5,5-dimethylhydantoin

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 1,3-Dichloro-5,5-dimethyl hydantoin. See annual publication for most recent information.

Last Updated Date : 12/14/2020

DI-SEC OCTYL PHTHALATE (DI(2-ETHYLHEXYL) PHTHALATE)†

Chemical Identification
CAS #	117-81-7
Formula	C₂₄H₃₈O₄
Synonyms	DEHP; di(2-ethylhexyl)phthalate; DOP; bis-(2-ethylhexyl)phthalate; octyl phthalate;phthalic acid

Physical Properties
Physical description	Colorless, oily liquid with a slight odor.
Boiling point	727°F	Molecular weight	390.5
Freezing point/melting point	-58°F	Vapor pressure	1.32 mmHg at 392°F
Flash point	420°F (open cup)	Vapor density	13.45
Specific gravity	0.99	Ionization potential
Lower explosive limit (LEL)	0.3% at 474°F	Upper explosive limit (UEL)	0.28% at 507°F
NFPA health rating	0	NFPA fire rating	1
NFPA reactivity rating	0	NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	1015
Sampling group
Sampler/Sampling media	OSHA versatile sampler (OVS-Tenax®) - 13 mm Tenax® tube (140/70 mg) with GFF enclosed [SKC 226-56]
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-FID
Method reference	OSHA 104 (fully 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	5 mg/m³	REL-TWA	5 mg/m³	TLV-TWA	5 mg/m³ [1996]	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	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION (LOQ 0.15 mg/m³). See Appendix A, NIOSH Potential Occupational Carcinogens.		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	5000 mg/m³
Carcinogenic classifications: IARC-3, NIOSH-Ca, NTP-R, TLV-A3, EPA-B2		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Di(2-ethylhexyl) phthalate

NIOSH: Pocket Guide to Chemical Hazards - Di-sec octyl phthalate

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Di(2-ethylhexyl) phthalate. See annual publication for most recent information.
EPA Air Toxics Website: Bis(2-ethylhexyl) phthalate (DEHP). U.S. Environmental Protection Agency Technology Transfer Network.
Foster, P.M.D., Mylchreest, E., Guido, K.W. and Sar, M.: Effects of phthalate esters on the developing reproductive tract of male rats. Human Reprod. Update 7(3): 231-235, 2001.
Koch, H.M., Bolt, H.M., Preuss, R. and Angerer, J.: New metabolites of di(2-ethylhexyl)phthalate (DEHP) in human urine and serum after single oral doses of deuterium-labelled DEHP. Arch. Toxicol. 79(7): 367-376, 2005.
Lovekamp-Swan, T. and Davis, B.J.: Mechanisms of phthalate ester toxicity in the female reproductive system. Environ. Health Perspect. 111(2): 139-145, 2003.
Pohanish, R.P. (editor): Di(2-Ethylhexyl)phthalate. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 873-876.
Shea, K.M. and American Academy of Pediatrics Committee on Environmental Health. Pediatric exposure and potential toxicity of phthalate plasticizers. Pediatrics 111(6 Pt. 1): 1467-1474, 2003.
Tickner, J.A., Schettler, T., Guidotti, T., McCally, M. and Rossi, M.: Health risks posed by use of di-2-ethyhexyl phthalate (DEHP) in PVC medical devices: a critical review. Am. J. Ind. Med. 39(1): 100-111, 2001.

Last Updated Date : 12/28/2020

TETRAFLUOROETHYLENE

Chemical Identification
CAS #	116-14-3
Formula	C₂F₄
Synonyms	ethylene tetrafluoride; perfluoroethylene; perfluoroethene; tetrafluoroethene

Physical Properties
Physical description	Colorless, odorless gas.
Boiling point	-105.3°F	Molecular weight	100.02
Freezing point/melting point	-224.5°F	Vapor pressure	22800 mmHg at 70°F
Flash point		Vapor density	3.87
Specific gravity	1.519 at -105°F	Ionization potential
Lower explosive limit (LEL)	10%	Upper explosive limit (UEL)	50%
NFPA health rating	2	NFPA fire rating	4
NFPA reactivity rating	3	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	2 ppm [1997]	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	N	Skin notation	NA
Notes: Not established		Notes: Not established		Notes:		Notes: Not established
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: IARC-2B, TLV-A3, NTP-R		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: 200 ppm/1000 ppm/10000 ppm

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Tetrafluoroethylene, stabilized

NIOSH: Pocket Guide to Chemical Hazards - Tetrafluoroethylene, stabilized

Literature References

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

Last Updated Date : 01/12/2021

FENSULFOTHION

Chemical Identification
CAS #	115-90-2
Formula	C₁₁H₁₇O₄PS₂
Synonyms	dasanit; o,o-diethyl o-(p-methylsulfinyl)phenyl)phosphorothioate; Terracur P

Physical Properties
Physical description	Brown liquid or yellow oil.
Boiling point	280-286°F	Molecular weight	308.35
Freezing point/melting point		Vapor pressure
Flash point		Vapor density
Specific gravity	1.202	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	0.01 mg/m³ (inhalable fraction and vapor) [2004]	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	N	Skin notation	N	Skin notation	N
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 - Fensulfothion

NIOSH: Pocket Guide to Chemical Hazards - Fensulfothion

Literature References

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

Last Updated Date : 12/29/2020

TRIPHENYL PHOSPHATE†

Chemical Identification
CAS #	115-86-6
Formula	C₁₈H₁₅O₄P
Synonyms	phenyl phosphate; TPP; triphenyl ester of phosphoric acid

Physical Properties
Physical description	Colorless, crystalline powder with a phenol-like odor.
Boiling point	473°F at 11 mmHg	Molecular weight	326.3
Freezing point/melting point	122-124°F	Vapor pressure	1 mmHg at 380°F
Flash point	428°F	Vapor density
Specific gravity	1.2055	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	1	NFPA fire rating	1
NFPA reactivity rating	0	NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	2535
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^*
Sampling volume (TWA)^*	10-400 L
Sampling flow rate (TWA)^*	1-3 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FPD
Method reference	NIOSH 5038 (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	3 mg/m³	REL-TWA	3 mg/m³	TLV-TWA	3 mg/m³ [1992]	PEL-TWA	3 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	Y
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	1000 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 - Triphenyl phosphate

NIOSH: Pocket Guide to Chemical Hazards - Triphenyl phosphate

Literature References

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

Last Updated Date : 01/28/2021

PENTAERYTHRITOL†

Chemical Identification
CAS #	115-77-5
Formula	C₅H₁₂O₄
Synonyms	2,2-bis(hydroxymethyl)-1,3-propanediol; methane tetramethylol; monopentaerythritol; PE; tetrahydroxymethylolmethane; tetramethylolmethane

Physical Properties
Physical description	Colorless to white, crystalline, odorless powder.
Boiling point	Sublimes	Molecular weight	136.2
Freezing point/melting point	500°F (sublimes)	Vapor pressure	0.00000008 mmHg
Flash point		Vapor density
Specific gravity	1.38	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.)	1987 (total); request using analyte code 9135	P157 (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), 5 mg/m³ (resp)	TLV-TWA	10 mg/m³ [2012]	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:		Notes: as PNOR, 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 - Pentaerythritol

NIOSH: Pocket Guide to Chemical Hazards - Pentaerythritol

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Pentaerythritol. See annual publication for most recent information.
NIOSH: Toxicologic review of selected chemicals: Pentaerythritol.
Pohanish, R.P. (editor): Pentaerythritol. Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1804-1805.

Last Updated Date : 01/08/2021

O-DIANISIDINE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

TERT-BUTYL CHROMATE‡

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

2,4,6-TRINITROTOLUENE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

HEXACHLOROBENZENE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

1,3-DICHLORO-5,5-DIMETHYL HYDANTOIN†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DI-SEC OCTYL PHTHALATE (DI(2-ETHYLHEXYL) PHTHALATE)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

TETRAFLUOROETHYLENE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

FENSULFOTHION

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

TRIPHENYL PHOSPHATE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

PENTAERYTHRITOL†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References