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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	Coated Filter Cassette, Glass Fiber Extra Thick, coated w/Sulfuric Acid, w/o Support Pad, 37mm, 3-Piece Traditional Style Styrene Cassette, Banded [SKC 225-9012]
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 : 04/29/2026

DIMETHYL-1,2-DIBROMO-2,2-DICHLOROETHYL PHOSPHATE (NALED)†

Chemical Identification
CAS #	300-76-5
Formula	C₄H₇Br₂Cl₂O₄P
Synonyms	dibrom; 1,2-dibromo-2,2-dichloroethyl dimethyl phosphate; naled

Physical Properties
Physical description	Colorless to white solid or straw-colored liquid (above 80°F) with a slightly pungent odor.
Boiling point	392°F	Molecular weight	380.8
Freezing point/melting point	80°F	Vapor pressure	0.0002 mmHg
Flash point		Vapor density
Specific gravity	1.97 at 68°F	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
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	3 mg/m³	REL-TWA	3 mg/m³	TLV-TWA	0.1 mg/m³ (inhalable fraction and vapor) [2002]	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	Y	Skin notation	Y	Skin notation	Y
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes: BEI®, dermal sensitizer (DSEN)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	200 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 - Naled

NIOSH: Pocket Guide to Chemical Hazards - Dimethyl-1,2-dibromo-2,2-dichlorethyl phosphate

Literature References

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

Last Updated Date : 12/28/2020

CRUFOMATE

Chemical Identification
CAS #	299-86-5
Formula	C₁₂H₁₉ClNO₃P
Synonyms	4-t-butyl-2-chlorophenylmethyl methylphosphoramidate; Dowco 132; Ruelene; Amidophos

Physical Properties
Physical description	White, crystalline solid in pure form. The commercial product is a yellow oil.
Boiling point	decomposes	Molecular weight	291.7
Freezing point/melting point	140°F	Vapor pressure	0.01 mmHg at 243°
Flash point		Vapor density
Specific gravity	1.16	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.)	0776
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	GC-FPD
Method reference	OSHA PV2015 (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	Wipe with charcoal pad, seal in glass vial for shipment. [3M 3500]
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA	5 mg/m³	TLV-TWA	5 mg/m³ [1971]	PEL-TWA	5 mg/m³
PEL-STEL		REL-STEL	20 mg/m³	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 - Crufomate

NIOSH: Pocket Guide to Chemical Hazards - Crufomate

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 2017.

Last Updated Date : 12/22/2020

RONNEL†

Chemical Identification
CAS #	299-84-3
Formula	(CH₃₀)₂P(S)OC₆H₂Cl₃
Synonyms	O,O-dimethyl O-(2,4,5-trichlorophenyl) phosphorothioate; fenchlorophos

Physical Properties
Physical description	White to light-tan, crystalline solid.
Boiling point	decomposes	Molecular weight	321.6
Freezing point/melting point	106°F	Vapor pressure	0.0008 mmHg
Flash point		Vapor density
Specific gravity	1.49 at 77°F	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	2226
Sampling group
Sampler/Sampling media	OSHA versatile sampler (OVS-7) - 13 mm XAD-7 tube (270/140 mg) with GFF enclosed (no longer available) [SKC 226-57]
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-FPD
Method reference	OSHA PV2054
Notes	Media no longer available. SKC recommends the 200/100 mg variant with the same media [SKC 226-57].
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	15 mg/m³	REL-TWA	10 mg/m³	TLV-TWA	5 mg/m³ (inhalable fraction and vapor) [2005]	PEL-TWA	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: The OSHA Construction and Maritime Industries PEL is 10 mg/m³ as an 8 hr TWA. See 29 CFR 1910.1000 Table Z-1, 29 CFR 1926.55 Table 1 and 29 CFR 1915.1000 Table Z-Shipyards.		Notes:		Notes: BEI®		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	300 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 - Ronnel

NIOSH: Pocket Guide to Chemical Hazards - Ronnel

Literature References

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

Last Updated Date : 06/08/2022

DISULFOTON

Chemical Identification
CAS #	298-04-4
Formula	C₈H₁₉O₂PS₃
Synonyms	o,o-diethyl S-2-(ethylthio)-ethyl phosphorodithioate; Di-Syston®; thiodemeton; phosphorodithioic acid

Physical Properties
Physical description	Oily, colorless to yellow liquid with a characteristic, sulfur odor.
Boiling point	270-271°F	Molecular weight	274.4
Freezing point/melting point	-13°F	Vapor pressure	0.0002 mmHg
Flash point	>180°F	Vapor density
Specific gravity	1.14	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.)	2680
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)^*	480 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FPD
Method reference	OSHA PV2105 (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	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		REL-TWA	0.1 mg/m³	TLV-TWA	0.05 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	N	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 - Disulfoton

NIOSH: Pocket Guide to Chemical Hazards - Disulfoton

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Disulfoton. See annual publication for most recent information.
US EPA Integrated Risk Information System: Disulfoton (CASRN 298-04-4).
Henderson, M.C., Krueger, S.K., Siddens, L.K., Stevens, J.F. and Williams, D.E.: S-oxygenation of the thioether organohosphate insecticides phorate and disulfoton by human lung flavin-containing monooxygenase 2. Biochem. Pharmacol. 68(5): 959-967, 2004.
Pohanish, R.P. (editor): Disulfoton. Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 991-993.
Usmani, K.A., Karoly, E.D., Hodgson, E. and Rose, R.L.: In vitro sulfoxidation of thioether compounds by human cytochrome P450 and flavin-containing monooxygenase isoforms with particular reference to the CYP2C family. Drug Metab. Dispos. 32(3): 333-339, 2004.

Last Updated Date : 12/28/2020

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

DIMETHYL-1,2-DIBROMO-2,2-DICHLOROETHYL PHOSPHATE (NALED)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CRUFOMATE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

RONNEL†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DISULFOTON

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References