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4-DIMETHYLAMINOAZOBENZENE‡

Chemical Identification
CAS #	60-11-7
Formula	C₁₄H₁₅N₃
Synonyms	butter yellow; DAB; p-dimethylaminoazobenzene; N,N-dimethyl-4-aminoazobenzene; methyl yellow

Physical Properties
Physical description	Yellow, leaf-shaped crystals.
Boiling point	sublimes	Molecular weight	225.3
Freezing point/melting point	232°F	Vapor pressure	0.0000003 mmHg (est.)
Flash point		Vapor density	7.78
Specific gravity		Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

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

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA		TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	NA	Skin notation	N
Notes: See 29 CFR 1910.1015, 4- Dimethylaminoazobenzene and 29 CFR 1910.1003, 13 Carcinogens.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens.		Notes: Not established		Notes: See California Code of Regulations, Title 8, Section 5209. Carcinogens.
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R, OSHA-Ca		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - 4-Dimethylaminoazobenzene

NIOSH: Pocket Guide to Chemical Hazards - 4-Dimethylaminoazobenzene

Literature References

Last Updated Date : 12/15/2020

1-CHLORO-1-NITROPROPANE†

Chemical Identification
CAS #	600-25-9
Formula	C₃H₆ClNO₂
Synonyms	Korax; Lanstan

Physical Properties
Physical description	Colorless liquid with an unpleasant odor.
Boiling point	289°F	Molecular weight	123.6
Freezing point/melting point		Vapor pressure	6 mmHg
Flash point	144°F (open cup)	Vapor density	4.26
Specific gravity	1.21	Ionization potential	9.90 eV
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	3	NFPA fire rating	2
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.)	0660
Sampling group
Sampler/Sampling media	Chromosorb 108® (400/200 mg)
Sampling time^*
Sampling volume (TWA)^*	12 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	NIOSH S211 (fully validated)
Notes	OSHA staff - please contact the SLTC before sampling at (801) 233-5100.
Special requirements	Chromosorb® 108 resin must be washed with methylene chloride and ethyl acetate before use.

^* 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	Infrared spectrophotometer	Infrared spectrophotometer
Model/Type	Miran 1A & 1B	Miran 103
Sampling information (see manufacturer instructions)	1.6 ppm@12.4 µm	0-100 ppm@12.4 µm

**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	20 ppm(100 mg/m³)	REL-TWA	2 ppm (10 mg/m³)	TLV-TWA		PEL-TWA	2 ppm (10 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: Visit the ACGIH TLV site for specific data		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	100 ppm
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-Chloro-1-nitropropane

NIOSH: Pocket Guide to Chemical Hazards - 1-Chloro-1-nitropropane

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 1-Chloro-1-nitropropane. See annual publication for most recent information.
Occupational Health Guidelines for Chemical Hazards. U.S. Department of Health and Human Services (DHHS), National Institute for Occupational Safety and Health (NIOSH) Publication No. 81-123, (1981, January). Provides a table of contents of guidelines for many hazardous chemicals. The files provide technical chemical information, including chemical and physical properties, health effects, exposure limits, and recommendations for medical monitoring, personal protective equipment (PPE), and control procedures.

Last Updated Date : 05/03/2024

2-CHLOROPROPIONIC ACID

Chemical Identification
CAS #	598-78-7
Formula	C₃H₅ClO₂
Synonyms	α-chloropropionic acid

Physical Properties
Physical description	A pale liquid with a slight odor.
Boiling point	366°F	Molecular weight	108.53
Freezing point/melting point		Vapor pressure
Flash point	225°F	Vapor density
Specific gravity	1.2585	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)	3.6%
NFPA health rating	3	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	0.1 ppm [1988]	PEL-TWA	0.1 ppm (0.44 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:		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - 2-Chloropropionic acid

NIOSH: Pocket Guide to Chemical Hazards - 2-Chloropropionic acid

Literature References

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

Last Updated Date : 12/15/2020

1,1-DICHLORO-1-NITROETHANE†

Chemical Identification
CAS #	594-72-9
Formula	C₂H₃Cl₂NO₂
Synonyms	dichloronitroethane

Physical Properties
Physical description	Colorless liquid with an unpleasant odor.
Boiling point	255°F	Molecular weight	143.9
Freezing point/melting point		Vapor pressure	15 mmHg
Flash point	168°F	Vapor density
Specific gravity	1.43	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	3	NFPA fire rating	2
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.)	0890
Sampling group
Sampler/Sampling media	Anasorb 747 (140/70 mg) [SKC 226-81A]
Sampling time^*
Sampling volume (TWA)^*	1.5-15 L
Sampling flow rate (TWA)^*	0.01-1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FID
Method reference	NIOSH 1601 (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	Infrared spectrophotometer	Infrared spectrophotometer
Model/Type	Miran 1A & 1B	Miran 103
Sampling information (see manufacturer instructions)	0.3 ppm@11.2 µm	0-25 ppm@9.1 µm

**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 ppm (10 mg/m³)	TLV-TWA	2 ppm [1978]	PEL-TWA	2 ppm (10 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C	10 ppm (60 mg/m³)	REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	25 ppm
Carcinogenic classifications: Not listed		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - 1,1-Dichloro-1-nitroethane

NIOSH: Pocket Guide to Chemical Hazards - 1,1-Dichloro-1-nitroethane

Literature References

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

Last Updated Date : 12/14/2020

PERCHLOROMETHYL MERCAPTAN†

Chemical Identification
CAS #	594-42-3
Formula	CCl₄S
Synonyms	PCM; PMM; trichloromethane sulfenyl chloride; trichloromethyl sulfur chloride

Physical Properties
Physical description	Pale-yellow, oily liquid with an unbearable, acrid odor.
Boiling point	297°F	Molecular weight	185.87
Freezing point/melting point		Vapor pressure	3 mmHg
Flash point		Vapor density	6.414
Specific gravity	1.69	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	Infrared spectrophotometer
Model/Type	Miran 1A & 1B
Sampling information (see manufacturer instructions)	0.3 ppm@13.2 µm

**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 ppm (0.8 mg/m³)	REL-TWA	0.1 ppm (0.8 mg/m³)	TLV-TWA	0.1 ppm [1988]	PEL-TWA	0.1 ppm (0.8 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	10 ppm
Carcinogenic classifications:		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Perchloromethyl mercaptan

NIOSH: Pocket Guide to Chemical Hazards - Perchloromethyl mercaptan

Literature References

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

Last Updated Date : 01/28/2021

VINYL BROMIDE

Chemical Identification
CAS #	593-60-2
Formula	C₂H₃Br
Synonyms	bromoethene; bromoethylene; monobromoethylene

Physical Properties
Physical description	Colorless gas or liquid (below 60°F) with a pleasant odor.
Boiling point	60.4°F	Molecular weight	106.96
Freezing point/melting point	-219°F	Vapor pressure	1.4 atm
Flash point	<18°F	Vapor density	3.79
Specific gravity	1.49 (liquid at 60°F)	Ionization potential	9.80 eV
Lower explosive limit (LEL)	9%	Upper explosive limit (UEL)	15%
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.)	2577
Sampling group
Sampler/Sampling media	CSC tube (100/50 mg) [SKC 226-01]
Sampling time^*
Sampling volume (TWA)^*	5 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 8 (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	Infrared spectrophotometer
Model/Type	Miran 1A & 1B
Sampling information (see manufacturer instructions)	0.9 ppm@10.9µm

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA		TLV-TWA	0.5 ppm [1996]	PEL-TWA	0.1 ppm (0.44 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: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION (LOQ 0.2 ppm). See Appendix A, NIOSH Potential Occupational Carcinogens.		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: IARC-2A, NIOSH-Ca, TLV-A2, NTP-R		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Vinyl bromide, stabilized

NIOSH: Pocket Guide to Chemical Hazards - Vinyl bromide

Literature References

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

Last Updated Date : 01/28/2021

METHYL ACETYLENE-PROPADIENE MIXTURE (MAPP)†

Chemical Identification
CAS #	59355-75-8
Formula	C₃H₄
Synonyms	MAPP gas; methyl acetylene-allene mixture; propadiene-methyl acetylene; propyne-allene mixture; propyne-propadiene mixture

Physical Properties
Physical description	Colorless gas with a strong, characteristic, foul odor.
Boiling point	-36 to -4°F	Molecular weight	40.1
Freezing point/melting point	-213°F	Vapor pressure	>1 atm
Flash point		Vapor density	1.48
Specific gravity	0.576 at 59°F	Ionization potential
Lower explosive limit (LEL)	3.4%	Upper explosive limit (UEL)	10.8%
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.)	1652
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	OSHA staff, please contact the SLTC before sampling (801) 233-5100.
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	1000 ppm (1800 mg/m³)	REL-TWA	1000 ppm (1800 mg/m³)	TLV-TWA	1000 ppm [1964]	PEL-TWA	1000 ppm (1800 mg/m³)
PEL-STEL		REL-STEL	1250 ppm (2250 mg/m³)	TLV-STEL	1250 ppm [1964]	PEL-STEL	1250 ppm (2250 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: (EX) explosion hazard: the substance is a flammable asphyxiant or excursions above the TLV could approach 10% of the lower explosive limit.		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	3400 ppm
Carcinogenic classifications: Not listed		Notes: 10% of LEL
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Methylacetylene and propadiene mixture, stabilized

NIOSH: Pocket Guide to Chemical Hazards - Methyl acetylene-propadiene mixture

Literature References

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

Last Updated Date : 01/22/2024

1-HEXENE

Chemical Identification
CAS #	592-41-6
Formula	C₆H₁₂
Synonyms	α-hexene; Dialene 6; hexene; hexylene; 1-n-hexene

Physical Properties
Physical description	Colorless liquid with a petroleum-like odor.
Boiling point	146.3°	Molecular weight	84.16
Freezing point/melting point	-219.6°F	Vapor pressure
Flash point	-15°F	Vapor density
Specific gravity	0.673	Ionization potential
Lower explosive limit (LEL)	1.2% (est)	Upper explosive limit (UEL)
NFPA health rating	1	NFPA fire rating	3
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	50 ppm [1999]	PEL-TWA	50 ppm (180 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	N	Skin notation	N
Notes: Not established		Notes: Not established		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: --/500 ppm/5000 ppm

Additional Resources and Literature References

NOAA: CAMEO Chemicals - 1-Hexene

NIOSH: Pocket Guide to Chemical Hazards - 1-Hexene

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 1-Hexene. See annual publication for most recent information.

Last Updated Date : 12/15/2020

2-HEXANONE (METHYL N-BUTYL KETONE; METHYL BUTYL KETONE)†

Chemical Identification
CAS #	591-78-6
Formula	C₆H₁₂O
Synonyms	butyl methyl ketone; MBK; methyl butyl ketone; methyl n-butyl ketone

Physical Properties
Physical description	Colorless liquid with an acetone-like odor.
Boiling point	262°F	Molecular weight	100.2
Freezing point/melting point	-71°F	Vapor pressure	11 mmHg
Flash point	73°F	Vapor density	3.45
Specific gravity	0.812	Ionization potential	9.34 eV
Lower explosive limit (LEL)	1.2%	Upper explosive limit (UEL)	8%
NFPA health rating	2	NFPA fire rating	3
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.)	1690
Sampling group
Sampler/Sampling media	CSC tube (100/50 mg) [SKC 226-01]
Sampling time^*
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 PV2031 (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	100 ppm (410 mg/m³)	REL-TWA	1 ppm (4 mg/m³)	TLV-TWA	5 ppm [1995]	PEL-TWA	1 ppm (4 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL	10 ppm [1995]	PEL-STEL	10 ppm (40 mg/m³)
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	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	1600 ppm
Carcinogenic classifications: EPA-1		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Methyl butyl ketone

NIOSH: Pocket Guide to Chemical Hazards - 2-Hexanone

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Methyl n-butyl ketone. See annual publication for most recent information.
Bolt, H.M., Roos, P.H. and Thier, R.: The cytochrome P-450 isoenzyme CYP2E1 in the biological processing of industrial chemicals: consequences for occupational and environmental medicine. Int. Arch. Occup. Environ. Health 76(3): 174-185, 2003.
Bos, P.M.J., de Mik, G. and Bragt, P.C.: Critical review of the toxicity of methyl n-butyl ketone: risk from occupational exposure. Am. J. Ind. Med. 20(2): 175-194, 1991.
Pohanish, R.P. (editor): Methyl n-Butyl Ketone. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1535-1538.
Zhu, M., Spink, D.C., Yan, B., Bank, S. and DeCaprio A.P.: Inhibition of 2,5-hexanedione-induced protein cross-linking by biological thiols: chemical mechanisms and toxicological implications. Chem. Res. Toxicol. 8(5): 764-771, 1995.

Last Updated Date : 01/28/2021

LINDANE†

Chemical Identification
CAS #	58-89-9
Formula	C₆H₆Cl₆
Synonyms	BHC; HCH; γ-hexachlorocyclohexane; γ isomer of 1,2,3,4,5,6-hexachlorocyclohexane

Physical Properties
Physical description	White to yellow, crystalline powder with a slight, musty odor.
Boiling point	614°F	Molecular weight	290.83
Freezing point/melting point	235°F	Vapor pressure	0.00001 mmHg
Flash point		Vapor density
Specific gravity	1.85	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.)	1595
Sampling group
Sampler/Sampling media	GFF (37 mm Gelman Type A/E) and bubbler & 15 mL (isooctane) [AP4003705]
Sampling time^*
Sampling volume (TWA)^*	18-240 L
Sampling flow rate (TWA)^*	0.2-1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-ECD
Method reference	NIOSH 5502 (fully validated)
Notes	transfer bubbler solutions and filters in scintillation vials; pack carefully
Special requirements

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	0.5 mg/m³	REL-TWA	0.5 mg/m³	TLV-TWA	0.5 mg/m³ [1990]	PEL-TWA	0.5 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	Y	Skin notation	Y	Skin notation	Y	Skin notation	Y
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	50 mg/m³
Carcinogenic classifications: NTP-R, TLV-A3, IARC-2B		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Lindane

NIOSH: Pocket Guide to Chemical Hazards - Lindane

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Lindane. See annual publication for most recent information.
EPA Air Toxics Website: Lindane (Gamma-Hexachlorocyclohexane). U.S. Environmental Protection Agency Technology Transfer Network.
Angerer, J., Maass, R. and Heinrich, R.: Occupational exposure to hexachlorocyclohexane. VI. Metabolism of γ-hexachlorocyclohexane in man. Int. Arch. Occup. Environ. Health 52(1): 59-67, 1983.
Blair, A., Cantor, K.P. and Zahm, S.H.: Non-Hodgkin’s lymphoma and agricultural use of the insecticide lindane. Am. J. Ind. Med. 33(1): 82-87, 1998.
Corrigan, F.M., Weinburg, C.L., Shore, R.F., Daniel, S.E. and Mann, D.: Organochlorine insecticides in substantia nigra in Parkinson’s disease. J. Toxicol. Environ. Health 59(4): 229-234.
Dick, A.P., Blain, P.G. and Williams, F.M.: The percutaneous absorption and skin distribution of lindane in man. I. In vivo studies. Hum. Exp. Toxicol. 16(11): 645-651, 1997.
Drummond, L., Gillanders, E.M. and Wilson, H.K.: Plasma ?-hexachlorocyclohexane concentrations in forestry workers exposed to lindane. Br. J. Ind. Med. 45(7): 493-497, 1988.
Feldmann, R.J. and Maibach, H.I.: Percutaneous penetration of some pesticides and herbicides in man. Toxicol. Appl. Pharmacol. 28: 126-132, 1974.
Hoppin, J.A., et al.: Pesticides and other agricultural factors associated with self-reported farmer’s lung among farm residents in the Agricultural Health Study. Occup. Environ. Med. 64: 334-341, 2007.
No Authors: Lindane. Report on Carcinogens (latest edition); U.S. Department of Health and Human Services, Public Health Service, National Toxicology Program.
No Authors: Pesticide News Story: Remaining Lindane Registrations Cancelled.
Pohanish, R.P. (editor): Lindane. In, Sittig’s Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1406-1409.
Purdue, M.P., Hoppin, J.A., Blair, A., Dosemeci, M. and Alavanja, M.C.: Occupational exposure to organochlorine insecticides and cancer incidence in the Agricultural Health Study. Int. J. Cancer 120(3): 642-649, 2007.
Sievert, J., et al.: Unintentional topical lindane ingestions—United States, 1998-2003. MMWR Morb. Mortal. Wkly Rep. 54(21): 533-535, 2005.

Last Updated Date : 01/04/2021

4-DIMETHYLAMINOAZOBENZENE‡

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

1-CHLORO-1-NITROPROPANE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

2-CHLOROPROPIONIC ACID

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

1,1-DICHLORO-1-NITROETHANE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

PERCHLOROMETHYL MERCAPTAN†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

VINYL BROMIDE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

METHYL ACETYLENE-PROPADIENE MIXTURE (MAPP)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

1-HEXENE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

2-HEXANONE (METHYL N-BUTYL KETONE; METHYL BUTYL KETONE)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

LINDANE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References