Occupational Safety and Health Administration

TEMEPHOS (ABATE)†

Chemical Identification
CAS #	3383-96-8
Formula	C₁₆H₁₂O₆P₂S₃
Synonyms	Abate; O,O,O'O'-tetramethyl O,O'-thiodi-p-phenylene phosphorothioate; phosphorothioic acid, O,O-dimethyl ester, O,O-diester with 4,4'-thiodiphenol

Physical Properties
Physical description	White, crystalline solid or liquid (above 87°F).
Boiling point	248-257°F (decomposes)	Molecular weight	466.5
Freezing point/melting point	87°F	Vapor pressure	0.00000007 mmHg at 77°F
Flash point		Vapor density
Specific gravity	1.32	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.)	0005 (total); request using analyte code 9135	T195 (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	Wipe with GFF (37 mm), Type A/E [AP4003705]
Bulk Method	Limit the amount of bulk submitted to 1 g or 1 mL.

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	1 mg/m³ (inhalable particulate matter) [2002]	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	Y	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes: BEI®		Notes: See footnote [n].
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 - Temephos

NIOSH: Pocket Guide to Chemical Hazards - Temephos

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Temephos. See annual publication for most recent information.
Aiub, C.A., Coelho, E.C., Sodre, E., Pinto, L.F. and Felzenszwalb, I.: Genotoxic evaluations of the organophosphorus pesticide temephos. Genet. Mol. Res. 1(2): 159-166, 2002.
Ferguson, P.W., Medon, P.J. and Nasri, E.: Temephos (Abate®) metabolism and toxicity in rats. Arch. Environ. Contam. Toxicol. 14(2): 143-147, 1985.
Pohanish, R.P. (editor): Temephos. Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 2148-2150.

Last Updated Date : 01/12/2021

DIAZOMETHANE†

Chemical Identification
CAS #	334-88-3
Formula	CH₂N₂
Synonyms	azimethylene; azomethylene; diazirine

Physical Properties
Physical description	Yellow gas with a musty odor.
Boiling point	-9°F	Molecular weight	42.1
Freezing point/melting point	-229°F	Vapor pressure	>1 atm
Flash point		Vapor density	1.45
Specific gravity		Ionization potential	9.00 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.)	0861
Sampling group
Sampler/Sampling media	XAD-2 tube (100/50 mg) coated with octanoic acid [SKC 226-23]
Sampling time^*
Sampling volume (TWA)^*	6-30 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 2515 (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	0.2 ppm (0.4 mg/m³)	REL-TWA	0.2 ppm (0.4 mg/m³)	TLV-TWA	0.2 ppm [1970]	PEL-TWA	0.2 ppm (0.4 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	2 ppm
Carcinogenic classifications: IARC-3, TLV-A2		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Diazomethane

NIOSH: Pocket Guide to Chemical Hazards - Diazomethane

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Diazomethane. See annual publication for most recent information.
Occupational Health Guidelines for Chemical Hazards. US 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 : 12/22/2020

DIAZINON®

Chemical Identification
CAS #	333-41-5
Formula	C₁₂H₂₁N₂O₃PS
Synonyms	Basudin; diazide; o,o-diethyl-o-2-isopropyl-4-methyl-6-pyrimidinyl-phosphorothioate; Spectracide

Physical Properties
Physical description	Colorless liquid with a faint ester-like odor.
Boiling point	decomposes	Molecular weight	304.4
Freezing point/melting point		Vapor pressure	0.0001 mmHg
Flash point	180°F	Vapor density
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.)	2720
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^*	480 min
Sampling volume (TWA)^*	480 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-FPD
Method reference	OSHA 62 (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		REL-TWA	0.1 mg/m³	TLV-TWA	0.01 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	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 - Diazinon

NIOSH: Pocket Guide to Chemical Hazards - Diazinon®

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Diazinon. See annual publication for most recent information.
Garfitt, S.J., Jones, K., Mason, H.J. and Cocker, J.: Exposure to the organophosphate diazinon: data from a human volunteer study with oral and dermal doses. Toxicol. Lett. 134(1-3): 105-113, 2002.
Kappers, W.A., Edwards, R.J., Murray, S. and Boobis, A.R.: Diazinon® is activated by CYP2C19 in human liver. Toxicol. Appl. Pharmacol. 177(1): 68-76, 2001.
Pohanish, R.P. (editor): Diazinon®. Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 770-772.

Last Updated Date : 12/22/2020

DIURON

Chemical Identification
CAS #	330-54-1
Formula	C₉H₁₀Cl₂N₂O
Synonyms	3-(3,4-dichlorophenyl)-1,1-dimethylurea; Direx®; Karmex®

Physical Properties
Physical description	White, odorless, crystalline solid.
Boiling point	356°F (decomposes)	Molecular weight	233.1
Freezing point/melting point	316°F	Vapor pressure	0.000000002 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.)	2684
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)^*	60 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	HPLC-UV
Method reference	OSHA PV2097 (partially validated)
Notes	Protect the samples from light.
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	10 mg/m³	TLV-TWA	10 mg/m³ [1974]	PEL-TWA	10 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: TLV-A4		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Diuron

NIOSH: Pocket Guide to Chemical Hazards - Diuron

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Diuron. See annual publication for most recent information.
U.S. EPA Integrated Risk Information System: Diuron (CASRN 330-54-1).
Pohanish, R.P. (editor): Diuron. In, Sittig’s Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 996-998.
Van Boven, M., Laruelle, L. and Daenens, P.: HPLC analysis of diuron and metabolites in blood and urine. J. Anal. Toxicol. 14 (4): 231-234, 1990.

Last Updated Date : 12/28/2020

1,5-NAPHTHENE DIISOCYANATE

Chemical Identification
CAS #	3173-72-6
Formula	C₁₀H₆(NCO)₂
Synonyms	1,5-diisocyanatonaphthalene; 1,5-naphthalene diisocyanate; 1,5-naphthalene ester of isocyanic acid; NDI

Physical Properties
Physical description	White to light-yellow, crystalline flakes.
Boiling point	505°F	Molecular weight	210.2
Freezing point/melting point	261°F	Vapor pressure	0.003 mmHg
Flash point	311°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.)	N119
Sampling group
Sampler/Sampling media	Isocyanate Sampling Filter Kit - GFF (37 mm, open-faced) coated with 1 mg 1-(2-pyridyl)piperazine [SLTC103]
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	HPLC
Method reference	OSHA PV2046 (partially validated)
Notes	Refrigerate filters until use. Sample open-faced!!
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	Hazard Assessment Test Kit for Aromatic Isocyanates
Model/Type	769-1002
Sampling information (see manufacturer instructions)	Isocyanate Surface and Dermal Sampling, Hazard Assessment Test Kit for Aromatic Isocyanates

**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	0.005 ppm (0.040 mg/m³)	TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C	0.020 ppm (0.170 mg/m³) [10 minutes]	TLV-C		PEL-C
Skin notation	NA	Skin notation	N	Skin notation	NA	Skin notation	NA
Notes: Not established		Notes:		Notes: Not established		Notes: Not established
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: IARC-3		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - 1,5-Naphthalene diisocyanate

NIOSH: Pocket Guide to Chemical Hazards - Naphthalene diisocyanate

Literature References

Last Updated Date : 04/02/2025

BROMACIL

Chemical Identification
CAS #	314-40-9
Formula	C₉H₁₃BrN₂O₂
Synonyms	5-bromo-3-sec-butyl-6-methyluracil; 5-Bromo-6-methyl-3-(1-methylpropyl)uracil

Physical Properties
Physical description	Odorless, colorless to white, crystalline solid.
Boiling point	sublimes	Molecular weight	261.2
Freezing point/melting point	317°F (sublimes)	Vapor pressure	0.0008 mmHg at 212°F
Flash point		Vapor density
Specific gravity	1.55	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	1 ppm (10 mg/m³)	TLV-TWA	10 mg/m³ [1976]	PEL-TWA	1 ppm (10 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: TLV-A3		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Bromacil

NIOSH: Pocket Guide to Chemical Hazards - Bromacil

Literature References

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

Last Updated Date : 12/18/2020

CHLORINATED DIPHENYL OXIDE†

Chemical Identification
CAS #	6973-37-1; 31242-93-0
Formula	C₁₂H₄Cl₆O
Synonyms	Synonyms depend on the degree of chlorination of diphenyl oxide [(C₆H₅)₂O], ranging from monochlorodiphenyl oxide [(C₆H₄Cl)O(C₆H₅)] to decachlorodiphenyl

Physical Properties
Physical description	The compounds are generally waxy solids or liquids, but appearance, odor and other properties vary.
Boiling point		Molecular weight	376.86
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.)	0613
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^*
Sampling volume (TWA)^*	200 L
Sampling flow rate (TWA)^*	1.5 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-ECD
Method reference	OSHA modified NIOSH 5025
Notes	Remove filter and backup pad from cassette and place in scintillation vial within one hour after 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
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		PEL-TWA	0.5 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes: Visit the ACGIH TLV site for specific data		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 - Chlorinated diphenyl oxide

NIOSH: Pocket Guide to Chemical Hazards - Chlorinated diphenyl oxide

Literature References

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

Last Updated Date : 04/26/2024

ALDRIN†

Chemical Identification
CAS #	309-00-2
Formula	C₁₂H₈Cl₆
Synonyms	1,2,3,4,10,10-hexachloro-1,4,4a,5,8,8a-hexahydro-endo-1,4-exo-5,8-dimethanonaphthalene; HHDN; octalene; Seedrin; Aldrite; Aldrosol

Physical Properties
Physical description	Colorless to dark-brown crystalline solid with a mild chemical odor.
Boiling point	decomposes	Molecular weight	364.9
Freezing point/melting point	219°F	Vapor pressure	0.00008 mmHg
Flash point		Vapor density
Specific gravity	1.60	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.)	0125
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	OSHA Modified 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	0.25 mg/m³	REL-TWA		TLV-TWA		PEL-TWA	0.25 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: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION (LOQ 0.15 mg/m³). See Appendix A.		Notes: Visit the ACGIH TLV site for specific data		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	25 mg/m³
Carcinogenic classifications: EPA-B2, IARC-3, 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 - Aldrin mixture, dry

NIOSH: Pocket Guide to Chemical Hazards - Aldrin

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Aldrin. See annual publication for most recent information.
(impairment of memory, emotional disturbances, tremors, hyperexcitability, and seizures) Sullivan, J.B., Jr., and Van Ert, M.: Organochlorine pesticides (Chapter 102). Materials Toxicology, Clinical Principles of Environmental Health, Sullivan, J.B. Jr., and Krieger, G.R. eds. Baltimore: Williams & Wilkins, pp. 1042-1047, 1992.
(headache, dizziness, nausea, vomiting; skin erythema) Bus, J.S. and Leber, A.P.: Miscellaneous chlorinated hydrocarbon pesticides (Chapter 69), in Patty's Toxicology, 5th Ed., Vol. 5, E. Bingham, B. Cohrssen and C.H. Powell, eds. New York: John Wiley & Sons, Inc., pp. 635-640, 2001.
(acute toxicity data - LD50s)

Last Updated Date : 03/26/2024

BIS(2-DIMETHYLAMINOETHYL) ETHER

Chemical Identification
CAS #	3033-62-3
Formula	C₈H₂₀N₂O
Synonyms	ethanamine, 2,2'-oxybis(N,N-dimethylethylamine)

Physical Properties
Physical description	A clear or yellow liquid.
Boiling point	372°F	Molecular weight	160.3
Freezing point/melting point		Vapor pressure
Flash point		Vapor density
Specific gravity		Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
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	0.05 ppm [1997]	PEL-TWA	0.05 ppm (0.328 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL	0.15 ppm [1997]	PEL-STEL	0.15 ppm (0.983 mg/m³)
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	N	Skin notation	Y	Skin notation	Y
Notes: Not established		Notes: See Appendix C, Supplementary Exposure Limits, NIAX® Catalyst ESN.		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 - Bis(2-(Dimethylamino)ethyl)ether

NIOSH: Pocket Guide to Chemical Hazards - bis(2-(Dimethylamino)ethyl)ether

Literature References

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

Last Updated Date : 12/17/2020

HYDRAZINE†

Chemical Identification
CAS #	302-01-2
Formula	N₂H₄
Synonyms	diamine; hydrazine (anhydrous); hydrazine base

Physical Properties
Physical description	Colorless, fuming, oily liquid with an ammonia-like odor.
Boiling point	236.3°F	Molecular weight	32.05
Freezing point/melting point	36°F	Vapor pressure	10 mmHg
Flash point	125.6°F	Vapor density
Specific gravity	1.01	Ionization potential	8.93 eV
Lower explosive limit (LEL)	4.7%	Upper explosive limit (UEL)	100%
NFPA health rating	4	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.)	1390
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^*
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	HPLC
Method reference	OSHA 108 (fully validated)
Notes	The 2 filters are separated by the ring section of the 3-piece cassette to provide a backup portion to the sampling train.
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	Limit the amount of bulk submitted to 1 g or 1 mL.

On-Site Screening Techniques
Device	Detector tube	Detector tube	Detector tube
Model/Type	Dräger - Hydrazine 0.2/a, 6733121	Dräger - Hydrazine 0.25/a, CH31801	Matheson-Kitagawa 8014-219S
Sampling information (see manufacturer instructions)	10 or 20 strokes, approx 0.1-10 ppm range, uncertainty 25%	5 or 10 strokes, 0.01-2 ppm range, uncertainty 16% for 0.1-0.5 ppm, 8% for 0.5-2 ppm	follow mfr instructions, approx 0.1 ppm-10 ppm range

**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 ppm (1.3 mg/m³)	REL-TWA		TLV-TWA	0.01 ppm [1988]	PEL-TWA	0.01 ppm (0.013 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C	0.03 ppm (0.04 mg/m³) [120 minutes]	TLV-C		PEL-C
Skin notation	Y	Skin notation	N	Skin notation	Y	Skin notation	Y
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes: CARCINOGEN (Ca): See Appendix A, NIOSH Potential Occupational Carcinogens.		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	50 ppm
Carcinogenic classifications: IARC-2B,NIOSH-Ca, NTP-R, TLV-A3, EPA-B2		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: 0.5 ppm/5 ppm/30 ppm

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Hydrazine, anhydrous

NIOSH: Pocket Guide to Chemical Hazards - Hydrazine

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Hydrazine. See annual publication for most recent information.
EPA Air Toxics Website: Hydrazine U.S. Environmental Protection Agency Technology Transfer Network.
Reidenberg, M.M., Durant, P.J., Harris, R.A., De Boccardo, G., Lahita, R. and Stenzel, K.H.: Lupus erythematosus-like disease due to hydrazine. Am. J. Med. 75: 365-370, 1983 (malar rash, photosensitivity, antinuclear antibody, antibody to nDNA).

Last Updated Date : 01/28/2021

TEMEPHOS (ABATE)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DIAZOMETHANE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DIAZINON®

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DIURON

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

1,5-NAPHTHENE DIISOCYANATE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

BROMACIL

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CHLORINATED DIPHENYL OXIDE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

ALDRIN†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

BIS(2-DIMETHYLAMINOETHYL) ETHER

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

HYDRAZINE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References