Occupational Safety and Health Administration

SULFURYL FLUORIDE†

Chemical Identification
CAS #	2699-79-8
Formula	F₂O₂S
Synonyms	sulfur difluoride dioxide; Vikane

Physical Properties
Physical description	Colorless, odorless gas.
Boiling point	-68°F	Molecular weight	102.1
Freezing point/melting point	-212°F	Vapor pressure	15.8 atm at 70°F
Flash point		Vapor density	3.72
Specific gravity		Ionization potential	13.04 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.)	2323
Sampling group
Sampler/Sampling media	CSC tube (800/200 mg) [SKC 226-16]
Sampling time^*
Sampling volume (TWA)^*	1.3-10 L
Sampling flow rate (TWA)^*	0.05-0.1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	IC
Method reference	NIOSH 6012 (fully validated)
Notes	Ship at 0°C
Special requirements

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	5 ppm (20 mg/m³)	REL-TWA	5 ppm (20 mg/m³)	TLV-TWA	5 ppm [1992]	PEL-TWA	5 ppm (20 mg/m³)
PEL-STEL		REL-STEL	10 ppm (40 mg/m³)	TLV-STEL	10 ppm [1992]	PEL-STEL	10 ppm (40 mg/m³)
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	200 ppm
Carcinogenic classifications:		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Sulfuryl fluoride

NIOSH: Pocket Guide to Chemical Hazards - Sulfuryl fluoride

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Sulfuryl fluoride. See annual publication for most recent information.
Calvert, G.M., et al.: Health effects associated with sulfuryl fluoride and methyl bromide exposure among structural fumigation workers. Am. J. Public Health 88(12): 1774-1780, 1998.
Eisenbrandt, D.L. and Nitschke, K.D.: Inhalation toxicity of sulfuryl fluoride in rats and rabbits. Fundam. Appl. Toxicol. 12(3): 540-557, 1989.
Nuckolls, J.G., et al.: Fatalities resulting from sulfuryl fluoride: exposure after home fumigation - Virginia. MMWR Morb. Mortal. Wkly. Rep. 36(36): 602-604, 1987.
Pohanish, R.P. (editor): Sulfuryl Fluoride. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 2130-2132.

Last Updated Date : 01/12/2021

O-CHLOROBENZYLIDENE MALONONITRILE†

Chemical Identification
CAS #	2698-41-1
Formula	C₁₀H₅ClN₂
Synonyms	2-chlorobenzalmalonitrile; CS; OCBM

Physical Properties
Physical description	White crystalline solid with a pepper-like odor.
Boiling point	590-599°F	Molecular weight	187.6
Freezing point/melting point	203-205°F	Vapor pressure	0.00003 mmHg
Flash point		Vapor density	6.52
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.)	0623
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	OSHA Modified NIOSH Analytical Method (NIOSH P&CAM 304)
Notes	OSHA CSHOs please contact the SLTC prior to 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	0.05 ppm (0.4 mg/m³)	REL-TWA		TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C	0.05 ppm (0.4 mg/m³)	TLV-C		PEL-C	0.05 ppm (0.4 mg/m³)
Skin notation	N	Skin notation	Y	Skin notation	Y	Skin notation	Y
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	2 mg/m³
Carcinogenic classifications: TLV-A4		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: 0.005 mg/m³/0.1 mg/m³/25 mg/m³

Additional Resources and Literature References

NOAA: CAMEO Chemicals - O-Chlorobenzylidene malononitrile

NIOSH: Pocket Guide to Chemical Hazards - o-Chlorobenzylidene malononitrile

Literature References

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

Last Updated Date : 04/30/2024

ISOOCTYL ALCOHOL

Chemical Identification
CAS #	26952-21-6
Formula	C₈H₁₈O
Synonyms	isooctanol; oxooctyl alcohol

Physical Properties
Physical description	Clear, colorless liquid with a faint, pleasant odor.
Boiling point	367°F	Molecular weight	130.22
Freezing point/melting point	<212°F	Vapor pressure	0.4 mmHg
Flash point	180°F (open-cup)	Vapor density
Specific gravity	0.832	Ionization potential
Lower explosive limit (LEL)	0.9% (calc)	Upper explosive limit (UEL)	5.7% (est)
NFPA health rating	3	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.)	A635
Sampling group
Sampler/Sampling media	CSC tube (100/50 mg) [SKC 226-01]
Sampling time^*
Sampling volume (TWA)^*	10 L
Sampling flow rate (TWA)^*	0.2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FID
Method reference	OSHA PV2033 (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	50 ppm (270 mg/m³)	TLV-TWA	50 ppm [1990]	PEL-TWA	50 ppm (270 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:		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 - Isooctyl alcohol

NIOSH: Pocket Guide to Chemical Hazards - Isooctyl alcohol

Literature References

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

Last Updated Date : 01/28/2021

SODIUM AZIDE

Chemical Identification
CAS #	26628-22-8
Formula	N₃Na
Synonyms	azide; azium; sodium salt of hydrazoic acid

Physical Properties
Physical description	Colorless to white, odorless, crystalline solid.
Boiling point	decomposes	Molecular weight	65.02
Freezing point/melting point	527°F (decomposes to sodium and nitrogen)	Vapor pressure
Flash point		Vapor density
Specific gravity	1.85	Ionization potential	11.70 eV
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	4	NFPA fire rating	1
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.)	S113
Sampling group
Sampler/Sampling media	Silica gel tube(150/75 mg) impregnated with NaOH, a pre-filter is used to collect particulate azide [SKC 226-55 & SKC 225-802]
Sampling time^*	5 min minimum
Sampling volume (TWA)^*	5 L minimum
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	IC
Method reference	OSHA ID-211 (fully validated)
Notes	Keep samples refrigerated when not in transit. Ship samples overnight with cold-packs as soon as possible.
Special requirements

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA		TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C	0.1 ppm (0.3 mg/m³) (as HN3), 0.3 mg/m³ (as NaN3)	TLV-C	0.29 mg/m³ (as Sodium azide), 0.11 ppm (as Hydrazoic acid vapor) [1992]	PEL-C	0.1 ppm (0.3 mg/m³)
Skin notation	NA	Skin notation	Y	Skin notation	N	Skin notation	Y
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 - Sodium azide

NIOSH: Pocket Guide to Chemical Hazards - Sodium azide

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Sodium azide. See annual publication for most recent information.
Chang, S. and Lamm, S.H.: Human health effects of sodium azide exposure: a literature review and analysis. Int. J. Toxicol. 22(3): 175-186, 2003.
Miljours, S. and Braun, C.M.J.: A neuropsychotoxicological assessment of workers in a sodium azide production plant. Int. Arch. Occup. Environ. Health 76(3): 225-232, 2003.
Pohanish, R.P. (editor): Sodium Azide. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 2055-2057.
Shahidullah, M., et al.: Role of catalase in the smooth muscle relaxant actions of sodium azide and cyanamide. Eur. J. Pharmacol. 435(1): 93-101, 2002.
Trout, D., Esswein, E.J., Hales, T., Brown, K., Solomon, G. and Miller, M.: Exposures and health effects: an evaluation of workers at a sodium azide production plant. Am. J. Ind. Med. 30(3): 343-350, 1996.
Weiss, J.S.: Reactive airway dysfunction syndrome due to sodium azide inhalation. Int. Arch. Occup. Environ. Health 68(6): 469-471, 1996.

Last Updated Date : 09/22/2022

PLASTER OF PARIS†

Chemical Identification
CAS #	26499-65-0
Formula	2CaSO₄
Synonyms	calcium sulfate hemihydrate; dried calcium sulfate; gypsum hemihydrate; hemihydrate gypsum

Physical Properties
Physical description	White or yellowish, finely divided, odorless powder.
Boiling point		Molecular weight	145.2
Freezing point/melting point	325°F (loses H₂O)	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	2.5	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	2127 (total); request using analyte code 9135	P102 (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		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: No TLV established. It is recommended that airborne concentrations be kept below 3 mg/m³ (respirable particles) and 10 mg/m³ (inhalable particles) for insoluble particles of low toxicity for which no TLV has been established. See Appendix B of the TLV booklet for guidelines.		Notes: As Particulates not otherwise regulated. See footnote [n].
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications:		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Plaster of Paris

NIOSH: Pocket Guide to Chemical Hazards - Plaster of Paris

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Particles (insoluble or poorly soluble) Not Otherwise Specified (PNOS). See annual publication for most recent information.
Pohanish, R.P. (editor): Calcium Sulfate. Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 472-474.
Stern, F., Lehman, E. and Ruder, A.: Mortality among unionized construction plasterers and cement masons. Am. J. Ind. Med. 39(4): 373-388, 2001.

Last Updated Date : 01/08/2021

TERPHENYLS (O-, M-, P- ISOMERS)†

Chemical Identification
CAS #	26140-60-3
Formula	C₆H₅C₆H₄C₆H₅
Synonyms	o(m or p)-diphenylbenzene; 1,2(3 or 4)-diphenylbenzene; 2(3 or 4)-phenylbiphenyl; 1,2(3 or 4)-Terphenyl; o(m or p)-terphenyl; o(m or p)-triphenyl

Physical Properties
Physical description	Colorless or light-yellow solid.
Boiling point	630°F	Molecular weight	230.3
Freezing point/melting point		Vapor pressure	0.01 mmHg at 200°F for M-, 0.09 mmHg at 200°F for O-, very low for P-
Flash point	325-405°F (open cup)	Vapor density
Specific gravity	1.1-1.23	Ionization potential	7.78-8.01 eV
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	1	NFPA fire rating	1
NFPA reactivity rating	0	NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

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

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA		TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C	1 ppm (9 mg/m³)	REL-C	0.5 ppm (5 mg/m³)	TLV-C	5 mg/m³ [1977]	PEL-C	0.5 ppm (5 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	500 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 - O-Terphenyl

NIOSH: Pocket Guide to Chemical Hazards - o-Terphenyl

Literature References

NOAA: CAMEO Chemicals - M-Terphenyl, P-Terphenyl
NIOSH: Pocket Guide to Chemical Hazards - m-Terphenyl, p-Terphenyl.
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Terphenyls (o-, m-, p-isomers). See annual publication for most recent information.

Last Updated Date : 01/28/2021

METHYLCYCLOHEXANOL†

Chemical Identification
CAS #	25639-42-3
Formula	C₇H₁₄O
Synonyms	hexahydrocresol; hexahydromethylphenol

Physical Properties
Physical description	Straw-colored liquid with a weak odor like coconut oil.
Boiling point	311-356°F	Molecular weight	114.2
Freezing point/melting point	-58°F	Vapor pressure	2 mmHg at 86°F
Flash point	149-158°F	Vapor density
Specific gravity	0.92	Ionization potential	9.80 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.)	1760
Sampling group
Sampler/Sampling media	CSC tube (100/50 mg) [SKC 226-01]
Sampling time^*
Sampling volume (TWA)^*	1-15 L
Sampling flow rate (TWA)^*	0.01-0.2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FID
Method reference	NIOSH 1404 (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	Detector tube	Infrared spectrophotometer
Model/Type	Matheson-Kitagawa 8014-199U	Miran 1A & 1B
Sampling information (see manufacturer instructions)	5-200 ppm range	0.5 ppm@9.5 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	100 ppm (470 mg/m³)	REL-TWA	50 ppm (235 mg/m³)	TLV-TWA	50 ppm [2005]	PEL-TWA	50 ppm (235 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	500 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 - Methylcyclohexanol

NIOSH: Pocket Guide to Chemical Hazards - Methylcyclohexanol

Literature References

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

Last Updated Date : 01/05/2021

2-HYDROXYPROPYL ACRYLATE

Chemical Identification
CAS #	999-61-1
Formula	C₆H₁₀O₃
Synonyms	acrylic acid, 2-hydroxypropyl ester; β-hydroxypropyl acrylate; propylene glycol monoacrylate

Physical Properties
Physical description	Clear to light-yellow liquid wiith a sweetish, solvent odor.
Boiling point	376°F	Molecular weight	130.2
Freezing point/melting point		Vapor pressure
Flash point	207°F	Vapor density
Specific gravity	1.05	Ionization potential
Lower explosive limit (LEL)	1.8%	Upper explosive limit (UEL)
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.)	H156
Sampling group
Sampler/Sampling media	CSC tube (100/50 mg) coated with 10% t-butylcatechol [SKC 226-73]
Sampling time^*	100 min
Sampling volume (TWA)^*	10 L
Sampling flow rate (TWA)^*	0.1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FID
Method reference	OSHA PV2078 (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		REL-TWA	0.5 ppm (3 mg/m³)	TLV-TWA	0.5 ppm [1997]	PEL-TWA	0.5 ppm (3 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: dermal senstization (DSEN)		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 - Hydroxypropyl acrylate

NIOSH: Pocket Guide to Chemical Hazards - 2-Hydroxypropyl acrylate

Literature References

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

Last Updated Date : 12/15/2020

TRIMETHYLBENZENE, MIXED ISOMERS†

Chemical Identification
CAS #	25551-13-7
Formula	C₉H₁₂
Synonyms	[isomers: 1,2,3-trimethylbenzene; 1,2,4-trimethylbenzene; 1,3,5-trimethylbenzene]; hemimellitene; pseudocumene; mesitylene; methylxylene

Physical Properties
Physical description	Clear, colorless liquid with a distinctive, aromatic odor.
Boiling point	329-349°F	Molecular weight	120.2
Freezing point/melting point	-77 - (-)14°F	Vapor pressure	varies
Flash point	112-122°F	Vapor density
Specific gravity	0.86-0.89	Ionization potential	8.27-8.48 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.)	2505	2505
Sampling group	OVSG-1
Sampler/Sampling media	CSC tube (100/50 mg) [SKC 226-01]	SKC 575-002 Passive Sampler [SKC 575-002]
Sampling time^*	240 min	240 min
Sampling volume (TWA)^*	12 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	GC-FID
Method reference	OSHA 5000 (fully validated)	OSHA 1020 (fully validated)
Notes		To obtain sampling and analytical error similar to that available with active sampling, knowledge of the atmospheric pressure and temperature are required, and these should be obtained using NIST-traceable devices. If that is not possible, temperature is assumed to be 22.2 °C, and the atmospheric pressure is estimated based on the elevation of the sampling location. When estimates are used in place of traceable measurements the sampling and analytical error associated with passive sampling is substantially increased, and this makes it more difficult to demonstrate overexposures after considering the 95% lower confidence limit.
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	25 ppm (120 mg/m³) Construction and Maritime Industries ONLY	REL-TWA	25 ppm (125 mg/m³)	TLV-TWA	10 ppm [2021]	PEL-TWA	25 ppm (125 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	NA
Notes: See 29 CFR 1926.55 Table 1 and 29 CFR 1915.1000 Table Z-Shipyards.		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: TLV-A4 for 1,2,4-trimethylbenzene		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - 1,3,5-Trimethylbenzene

NIOSH: Pocket Guide to Chemical Hazards - 1,2,3-Trimethylbenzene

Literature References

NOAA: CAMEO Chemicals - 1,2,4-Trimethylbenzene.
1,2,4-Trimethylbenzene, 1,3,5-Trimethylbenzene.
ACGIH: Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Trimethyl benzene (mixed isomers). See annual publication for most recent information.
Järnberg, J., Ståhlbom, B., Johanson, G. and Löf, A.: Urinary excretion of dimethylhippuric acids in humans after exposure to trimethylbenzenes. Int. Arch. Occup. Environ. Health 69(6): 491-497, 1997.
Jones, K., Meldrum, M., Baird, E., Cottrell, S., Kaur, P., Plant, N., Dyne, D., Cocker, J.: Biological monitoring for trimethylbenzene exposure - a human volunteer study and a practical example in the workplace. The Annals of Occupational Hygiene. 50 (6): 593-598, 2006.
NIOSH: Recommendations for Occupational Safety and Health - Compendium of Policy Documents and Statements. January 1992.
NIOSH/CEC/IPCS: International Chemical Safety Cards - Trimethyl Benzene (Mixed Isomers). June 3, 2002.

Last Updated Date : 05/12/2022

Group Sampling Information
Sampling Media	Sampling Time (If there are exceptions they will be in Notes)	TWA Sampling Volume (If there are exceptions they will be in Notes)	TWA Flow Rate (If there are exceptions they will be in Notes)
CSC Tube (100/50 mg sections, 20/40 mesh), [SKC 226-01]	240 min	12 L	0.05 L/min

Analytes Sampling Information
Analytes	IMIS Code	Wipe Sampling
Isobutyl Acetate	1534	No
n-Butyl Acetate	0440	No
sec-Butyl Acetate	0441	No
tert-Butyl Acetate	0442	No
Toluene**	2460	No
Ethyl Benzene	1080	No
Perchloroethylene (Tetrachloroethylene)**	2020	No
Trichloroethylene**	2490	No
Xylene	2590	No
Trimethylbenzene	2505	No
Benzene***	0320	No
Ethyl Acetate****	1040	No
n-Propyl Acetate‡	2180	No
Pentane‡‡	1990	No
Cyclohexane‡‡‡	0810	No
Heptane*	1371	No
n-Hexane‡‡‡‡	1380	No
Nonane*	N807	No
Octane*	1957	No

Notes

Request any (up to three (3)) of these analytes together.

Alternatively request IMIS Code Q115 and SLTC will report any significant amounts of these analytes.

Results for unrequested analytes in this group will be reported if significant amount are found.

Toluene, sec-Butyl Acetate, Benzene and Isobutyl Alcohol all have/are known interferences. Please indicate on the 91A which of these compounds are known to be present.

There is no need to contact SLTC before sampling.

*80 min (4L)

**Peak sampling 1 min (0.05 L) and Ceiling sampling 5 min (0.25 L)

***STEL sampling 15 min (0.75 L)

****120 min (6 L)

‡200 min (10 L)

‡‡45 min (2.25 L)

‡‡‡190 min (9.5 L)

‡‡‡‡98 min (4.9 L)

SULFUR HEXAFLUORIDE†

Chemical Identification
CAS #	2551-62-4
Formula	F₆S
Synonyms	sulfur fluoride [Note: May contain highly toxic sulfur pentafluoride as an impurity.]

Physical Properties
Physical description	Colorless, odorless gas.
Boiling point	sublimes	Molecular weight	146.1
Freezing point/melting point	-83°F (sublimes)	Vapor pressure	21.5 atm
Flash point		Vapor density	5.11
Specific gravity		Ionization potential	19.30 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.)
Sampling group
Sampler/Sampling media
Sampling time^*
Sampling volume (TWA)^*
Sampling flow rate (TWA)^*
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments
Method reference
Notes
Special requirements

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device	Infrared spectrophotometer	Infrared spectrophotometer
Model/Type	Miran 1A & 1B	Miran 103
Sampling information (see manufacturer instructions)

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	1000 ppm (6000 mg/m³)	REL-TWA	1000 ppm (6000 mg/m³)	TLV-TWA	1000 ppm [1985]	PEL-TWA	1000 ppm (6000 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
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 hexafluoride

NIOSH: Pocket Guide to Chemical Hazards - Sulfur hexafluoride

Literature References

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

Last Updated Date : 01/12/2021

SULFURYL FLUORIDE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

O-CHLOROBENZYLIDENE MALONONITRILE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

ISOOCTYL ALCOHOL

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

SODIUM AZIDE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

PLASTER OF PARIS†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

TERPHENYLS (O-, M-, P- ISOMERS)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

METHYLCYCLOHEXANOL†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

2-HYDROXYPROPYL ACRYLATE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

TRIMETHYLBENZENE, MIXED ISOMERS†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

SULFUR HEXAFLUORIDE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References