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2,4-TOLUENE-DIISOCYANATE†

Chemical Identification
CAS #	584-84-9
Formula	C₉H₆N₂O₂
Synonyms	2,4-diisocyanate-1-methylbenzene; TDI; 2,4-TDI; 2,4-toluene diisocyanate

Physical Properties
Physical description	Colorless to pale-yellow solid or liquid (above 71°F) with a sharp, pungent odor.
Boiling point	484°F	Molecular weight	174.2
Freezing point/melting point	67.1-70.7°F	Vapor pressure	0.01 mmHg at 77°F
Flash point	270°F for an 80/20% 2,4/ 2,6 TDI mixture	Vapor density	6
Specific gravity	1.2244 at 68°F	Ionization potential
Lower explosive limit (LEL)	0.9%	Upper explosive limit (UEL)	9.5%
NFPA health rating	3	NFPA fire rating	1
NFPA reactivity rating	2	NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	2470
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^*	15 min
Sampling volume (TWA)^*	15 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	UHPLC
Method reference	OSHA 5002 (fully validated)
Notes	Refrigerate coated filters until used. 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	Detector tube	Hazard Assessment Test Kit for Aromatic Isocyanates
Model/Type	Dräger - Toluene diisocyanate 0.02/a, 6724501	769-1002
Sampling information (see manufacturer instructions)	25 strokes, approx 0.02-0.2 ppm range, uncertainty 30%	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		TLV-TWA	0.001 ppm (inhalable fraction and vapor) [2015]	PEL-TWA	0.005 ppm (0.04 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL	0.005 ppm [2015]	PEL-STEL
PEL-C	0.02 ppm (0.14 mg/m³)	REL-C		TLV-C		PEL-C	0.02 ppm (0.15 mg/m³)
Skin notation	N	Skin notation	N	Skin notation	Y	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens		Notes: dermal sensitizer (DSEN), respiratory sensitizer (RSEN)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	2.5 ppm
Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R, TLV-A3		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: 0.01 ppm/0.15 ppm/0.6 ppm

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Toluene-2,4-diisocyanate

NIOSH: Pocket Guide to Chemical Hazards - Toluene-2,4-diisocyanate

Literature References

EPA: Hazard Summary - Toluene-2,4-Diisocyanate
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Toluene diisocyanate, 2,4 or 2,6- (or as a mixture). See annual publication for most recent information.
NIOSH: Alert - Preventing asthma and death from diisocyanate exposure. DHHS (NIOSH) Publication No. 96-111. 1996.
NIOSH: Current Intelligence Bulletin 53 - Toluene Diisocyanate (TDI) and Toluenediamine (TDA) - Evidence of Carcinogenicity. December 1989.

Last Updated Date : 04/02/2025

O-METHYLCYCLOHEXANONE†

Chemical Identification
CAS #	583-60-8
Formula	CH₃C₆H₉O
Synonyms	2-methylcyclohexanone

Physical Properties
Physical description	Colorless liquid with a weak, peppermint-like odor.
Boiling point	329°F	Molecular weight	112.2
Freezing point/melting point	6.8°F	Vapor pressure	1 mmHg
Flash point	118°F	Vapor density
Specific gravity	0.93	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	2	NFPA fire rating	2
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.)	1765
Sampling group
Sampler/Sampling media	Porapak Q tube (150/75 mg) [SKC 226-115]
Sampling time^*
Sampling volume (TWA)^*	1-6 L
Sampling flow rate (TWA)^*	0.05 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FID
Method reference	NIOSH 2521 (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	100 ppm (460 mg/m³)	REL-TWA	50 ppm (230 mg/m³)	TLV-TWA	50 ppm [1970]	PEL-TWA	50 ppm (230 mg/m³)
PEL-STEL		REL-STEL	75 ppm (345 mg/m³)	TLV-STEL	75 ppm [1970]	PEL-STEL	75 ppm (345 mg/m³)
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	600 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 - O-Methylcyclohexanone

NIOSH: Pocket Guide to Chemical Hazards - o-Methylcyclohexanone

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - o-Methylcyclohexanone. See annual publication for most recent information.
Nakajin, S., Tamura, F., Takase, N. and Toyoshima, S.; Carbonyl reductase activity exhibited by pig testicular 20 β-hydroxysteroid dehydrogenase. Biol. Pharm. Bull. 29(11): 1215-1218, 1997.
Newberne, P., et al.: GRAS flavoring substances 19. Food Technol. 54(6): 66-68, 70, 72-74, 76-84, 2000.
Pohanish, R.P. (editor): 2-Methylcyclohexanone. In, Sittig’s Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1549-1550.

Last Updated Date : 01/12/2023

CHLORDANE†

Chemical Identification
CAS #	57-74-9
Formula	C₁₀H₆Cl₈
Synonyms	Chlordan; Chlordano; 1,2,4,5,6,7,8,8-octachloro-3a,4,7,7a-tetrahydro-4,7-methanoindane

Physical Properties
Physical description	Amber-colored, viscous liquid with a pungent, chlorine-like odor.
Boiling point	decomposes	Molecular weight	409.8
Freezing point/melting point	217-228°F	Vapor pressure	0.00001 mmHg
Flash point		Vapor density	14
Specific gravity	1.56	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	3	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.)	0611
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-ECD
Method reference	OSHA 67 (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	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	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	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. See Appendix A.		Notes: Visit the ACGIH TLV site for specific data		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	100 mg/m³
Carcinogenic classifications: IARC-2B, NIOSH-Ca, TLV-A3, EPA-B2		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Chlordane, [flammable liquid label]

NIOSH: Pocket Guide to Chemical Hazards - Chlordane

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Chlordane. See annual publication for most recent information.
International Agency for Research on Cancer: Chlordane and Heptachlor (Group 2B). IARC Summaries & Evaluations, Vol 79, 2001.
EPA Air Toxics Website: Chlordane. U.S. Environmental Protection Agency Technology Transfer Network.
Kilburn, K.H. and Thornton, J.C.: Protracted neurotoxicity from chlordane sprayed to kill termites. Environ. Health Perspect. 103(7-8): 690-694, 1995.
Pohanish, R.P. (editor): Chlordane. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 520-523.

Last Updated Date : 04/17/2024

β-PROPIOLACTONE‡

Chemical Identification
CAS #	57-57-8
Formula	C₃H₄O₂
Synonyms	BPL; hydroacrylic acid, β-lactone; 3-hydroxy-β-lactone; 3-hydroxy-propionic acid; β-lactone; 2-oxetanone; 3-propiolacetone

Physical Properties
Physical description	Colorless liquid with a slightly sweet odor.
Boiling point	323°F (decomposes)	Molecular weight	72.1
Freezing point/melting point	-28°F	Vapor pressure	3 mmHg at 77°F
Flash point	165°F	Vapor density	2.5
Specific gravity	1.15	Ionization potential
Lower explosive limit (LEL)	2.9%	Upper explosive limit (UEL)
NFPA health rating	0	NFPA fire rating	2
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	Ca	REL-TWA		TLV-TWA	0.5 ppm [1992]	PEL-TWA	0.5 ppm (1.5 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 1910.1003, 13 Carcinogens.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A.		Notes:		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, TLV-A3		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - β-Propiolactone

NIOSH: Pocket Guide to Chemical Hazards - β-Propiolactone

Literature References

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

Last Updated Date : 01/28/2021

SUCROSE†

Chemical Identification
CAS #	57-50-1
Formula	C₁₂H₂₂O₁₁
Synonyms	beet sugar; cane sugar; confectioner's sugar; granulated sugar; rock candy; saccarose; sugar; table sugar

Physical Properties
Physical description	Hard, white, odorless crystals, lumps, or powder.
Boiling point	decomposes	Molecular weight	342.3
Freezing point/melting point	320-367°F (decomposes)	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	1.59	Ionization potential
Lower explosive limit (LEL)	0.045 g/L	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.)	2285 (total); request using analyte code 9135	S130 (resp); request using analyte code 9130
Sampling group
Sampler/Sampling media	Tared low-ash 37 mm PVC filter, 5 microns [SLTC108]	Tared low-ash 37 mm PVC filter, 5 microns, preceded by 10 mm nylon Dorr-Oliver cyclone for respirable samples. [SLTC108]
Sampling time^*	240-480 min	240-480 min
Sampling volume (TWA)^*	960 L	816 L
Sampling flow rate (TWA)^*	2 L/min	1.7 L/min ±5%
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	Gravimetric	Gravimetric
Method reference	OSHA PV2121 (partially validated)	OSHA PV2121 (partially validated)
Notes	If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration. If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for the applicable component and appropriate results will be reported.	If the filter is not overloaded, samples can be collected up to an 8-hour period. If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration. If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for the applicable component and appropriate results will be reported.
Special requirements	FOR TOTAL DUST SAMPLES, DO NOT USE A CYCLONE!!

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	15 mg/m³ (total dust), 5 mg/m³ (respirable fraction)	REL-TWA	10 mg/m³ (total), 5 mg/m³ (resp)	TLV-TWA	10 mg/m³ [1992]	PEL-TWA	10 mg/m³ (total dust), 5 mg/m³ (respirable fraction)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes: As Particulates not otherwise regulated. 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 - Sucrose

NIOSH: Pocket Guide to Chemical Hazards - Sucrose

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Sucrose. See annual publication for most recent information.
Bangha, E. and Elsner, P.: Skin problems in sugar artists. Br. J. Dermatol. 135(5): 772-774, 1996.
Bohadana, A.B., Massin, N., Wild, P. and Berthiot, G.: Airflow obstruction in chalkpowder and sugar workers. Int. Arch. Occup. Environ. Med. 68(4): 243-248, 1996.
Forster, H.W., Crook, B., Platts, B.W., Lacey, J. and Topping, M.D.: Investigation of organic aerosols generated during sugar beet slicing. Am. Ind. Hyg. Assoc. J. 50(1): 44-50, 1992.
Jensen, P.S., Todd, W.F., Hart, M.E., Mickelsen, R.L. and O'Brien D.M.: Evaluation and control of worker exposure to fungi in a beet sugar refinery. Am. Ind. Hyg. Assoc. J. 54(12): 742-748, 1993.
Pohanish, R.P. (editor): Sucrose. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 2106-2107.
Rosenman, K.D. Hart, M. and Ownby, D.R.: Occupational asthma in a beet sugar processing plant. Chest 101(6): 1720-1722, 1992.
Rothschild, M.A. and Maxeiner, H.: Death caused by a letter bomb. Int. J. Legal Med. 114(1-2): 103-106, 2000.

Last Updated Date : 01/12/2021

STRYCHNINE†

Chemical Identification
CAS #	57-24-9
Formula	C₂₁H₂₂N₂O₂
Synonyms	nux vomica; strynchnos

Physical Properties
Physical description	Colorless to white, odorless, crystalline solid.
Boiling point	518°F at 5 mmHg	Molecular weight	334.4
Freezing point/melting point	514°F	Vapor pressure	low
Flash point		Vapor density
Specific gravity	1.36	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.)	2275
Sampling group
Sampler/Sampling media	GFF (37 mm), Type A/E [AP4003705]
Sampling time^*
Sampling volume (TWA)^*	70-1000 L
Sampling flow rate (TWA)^*	1-3 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	HPLC-UV
Method reference	NIOSH 5016 (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	0.15 mg/m³	REL-TWA	0.15 mg/m³	TLV-TWA	0.15 mg/m³ [1992]	PEL-TWA	0.15 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	3 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 - Strychnine

NIOSH: Pocket Guide to Chemical Hazards - Strychnine

Literature References

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

Last Updated Date : 01/12/2021

1,1-DIMETHYLHYDRAZINE†

Chemical Identification
CAS #	57-14-7
Formula	C₂H₈N₂
Synonyms	dimazine; DMH; UDMH; unsymmetrical dimethylhydrazine

Physical Properties
Physical description	Colorless liquid with an ammonia- or fish-like odor.
Boiling point	147°F	Molecular weight	60.1
Freezing point/melting point	-72°F	Vapor pressure	103 mmHg
Flash point	5°F	Vapor density	1.94
Specific gravity	0.79	Ionization potential	8.05 eV
Lower explosive limit (LEL)	2%	Upper explosive limit (UEL)	95%
NFPA health rating	4	NFPA fire rating	3
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.)	0940
Sampling group
Sampler/Sampling media	Bubbler (0.1 M hydrochloric acid)
Sampling time^*
Sampling volume (TWA)^*	2-100 L
Sampling flow rate (TWA)^*	0.2-1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	UV-VIS
Method reference	NIOSH 3515 (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	Infrared spectrophotometer
Model/Type	Miran 1A & 1B
Sampling information (see manufacturer instructions)	0.3 ppm@11.2 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	0.5 ppm (1 mg/m³)	REL-TWA		TLV-TWA	0.01 ppm [1993]	PEL-TWA	0.01 ppm (0.025 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C	0.06 ppm (0.15 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): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A.		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	15 ppm
Carcinogenic classifications: IARC-2B, NIOSH-Ca, NTP-R, TLV-A3		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - 1,1-Dimethylhydrazine

NIOSH: Pocket Guide to Chemical Hazards - 1,1-Dimethylhydrazine

Literature References

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

Last Updated Date : 01/15/2021

SULFUR PENTAFLUORIDE†

Chemical Identification
CAS #	5714-22-7
Formula	S₂F₁₀
Synonyms	disulfur decafluoride; sulfur decafluoride

Physical Properties
Physical description	Colorless liquid or gas (above 84°F) with an odor like sulfur dioxide.
Boiling point	84°F	Molecular weight	254.1
Freezing point/melting point	-134°F	Vapor pressure	561 mmHg
Flash point		Vapor density	8.77
Specific gravity	2.08 at 32°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	0.025 ppm (0.25 mg/m³)	REL-TWA		TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C	0.01 ppm (0.1 mg/m³)	TLV-C	0.001 ppm (0.1 mg/m³) [2020]	PEL-C	0.01 ppm (0.1 mg/m³)
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	1 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 - Sulfur pentafluoride

NIOSH: Pocket Guide to Chemical Hazards - Sulfur pentafluoride

Literature References

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

Last Updated Date : 05/18/2022

GLYCERINE (MIST)†

Chemical Identification
CAS #	56-81-5
Formula	C₃H₈O₃
Synonyms	glycerin (anhydrous); glycerol; glycyl alcohol; 1,2,3-propanetriol; trihydroxypropane

Physical Properties
Physical description	Clear, colorless, odorless, syrupy liquid or solid (below 64°F).
Boiling point	554°F (decomposes)	Molecular weight	92.1
Freezing point/melting point	64°F	Vapor pressure	0.003 mmHg at 122°F
Flash point	320°F	Vapor density	3.17
Specific gravity	1.26	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	1	NFPA fire rating	1
NFPA reactivity rating	0	NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	1363 (total); request using analyte code 9135	G115 (resp); request using analyte code 9130
Sampling group
Sampler/Sampling media	Tared low-ash 37 mm PVC filter, 5 microns [SLTC108]	Tared low-ash 37 mm PVC filter, 5 microns, preceded by 10 mm nylon Dorr-Oliver cyclone for respirable samples. [SLTC108]
Sampling time^*	240-480 min	240-480 min
Sampling volume (TWA)^*	960 L	816 L
Sampling flow rate (TWA)^*	2 L/min	1.7 L/min ±5%
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	Gravimetric	Gravimetric
Method reference	OSHA PV2121 (partially validated)	OSHA PV2121 (partially validated)
Notes	If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration. If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for the applicable component and appropriate results will be reported.	If the filter is not overloaded, samples can be collected up to an 8-hour period. If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration. If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for the applicable component and appropriate results will be reported.
Special requirements	FOR TOTAL DUST SAMPLES, DO NOT USE A CYCLONE!!

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	15 mg/m³ (total dust), 5 mg/m³ (respirable)	REL-TWA		TLV-TWA	See Appendix B: Particles (insoluble or poorly soluble) Not Otherwise Specified (PNOS)	PEL-TWA	10 mg/m³ (total dust), 5 mg/m³ (respirable fraction)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes: See Appendix D - Substances with No Established RELs.		Notes: Withdrawn in 2013 due to insufficient data relevant to human occupational exposure.		Notes: As PNOR, see also footnote [n], CAL/OSHA PELs.
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 - Glycerine

NIOSH: Pocket Guide to Chemical Hazards - Glycerin (mist)

Literature References

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

Last Updated Date : 12/29/2020

BENZ[A]ANTHRACENE†

Chemical Identification
CAS #	56-55-3
Formula	C₁₈H₁₂
Synonyms	tetraphene; 1,2-benzanthracene; benzanthrene; benzanthracene; benzo[a]anthracene

Physical Properties
Physical description	Colorless leaflets or plates or coarse gold powder with a greenish-yellow fluorescence.
Boiling point	815°F	Molecular weight	228.29
Freezing point/melting point	315-318°F	Vapor pressure
Flash point		Vapor density
Specific gravity		Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	0350
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	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	0.2 mg/m³	REL-TWA	0.1 mg/m³ (cyclohexane-extractable fraction)	TLV-TWA	Exposure by all routes should be carefully controlled to levels as low as possible. [1990]	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	N	Skin notation	NA
Notes: As Coal tar pitch volatiles (benzene soluble fraction), anthracene, BaP, phenanthrene, acridine, chrysene, pyrene [65966-93-2]. See 29 CFR 1910.1000 Table Z-1 and 29 CFR 1910.1002 Coal tar pitch volatiles; interpretation of term.		Notes: As Coal tar pitch volatiles [65996-93-2]. CARCINOGEN (Ca); See Appendix A and Appendix C - Supplementary Exposure Limits		Notes: BEI®		Notes: Not established
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: EPA-B2, IARC-2B, NTP-R, TLV-A2, NIOSH-Ca		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Benz[a]anthracene

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

Literature References

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

Last Updated Date : 01/22/2024

2,4-TOLUENE-DIISOCYANATE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

O-METHYLCYCLOHEXANONE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CHLORDANE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

β-PROPIOLACTONE‡

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

SUCROSE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

STRYCHNINE†

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-DIMETHYLHYDRAZINE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

SULFUR PENTAFLUORIDE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

GLYCERINE (MIST)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

BENZ[A]ANTHRACENE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References