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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

DINITROTOLUENE†

Chemical Identification
CAS #	25321-14-6
Formula	C₇H₆N₂O₄
Synonyms	2,4-dinitrotoluene; dinitrotoluol; DNT; methyldinitrobenzene [note: various isomers of DNT exist]

Physical Properties
Physical description	Orange-yellow crystalline solid with a characteristic odor.
Boiling point	572°F	Molecular weight	182.2
Freezing point/melting point	158°F	Vapor pressure	1 mmHg
Flash point	404°F	Vapor density	6.3
Specific gravity	1.32	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	3	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.)	0990
Sampling group
Sampler/Sampling media	OSHA versatile sampler (OVS-Tenax®) - 13 mm Tenax® tube (140/70 mg) with GFF enclosed [SKC 226-56]
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-TEA
Method reference	OSHA 44 (fully validated)
Notes	Lab modification of sample tube consists of an 8mm GFF disc placed inside tube ahead of first resin bed.
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	1.5 mg/m³	REL-TWA	1.5 mg/m³	TLV-TWA	0.2 mg/m³ [1993]	PEL-TWA	0.15 ppm (1 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, NIOSH Potential Occupational Carcinogens.		Notes: BEI®		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	50 mg/m³
Carcinogenic classifications: 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 - Dinitrotoluene

NIOSH: Pocket Guide to Chemical Hazards - Dinitrotoluene

Literature References

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

Last Updated Date : 12/28/2020

VINYL TOLUENE†

Chemical Identification
CAS #	25013-15-4
Formula	C₉H₁₀
Synonyms	methylstyrene; tolyethylene; ortho, meta & para-vinyltoluene (mixed isomers)

Physical Properties
Physical description	Colorless liquid with a strong, disagreeable odor.
Boiling point	339°F	Molecular weight	118.2
Freezing point/melting point	-106°F	Vapor pressure	1 mmHg
Flash point	127°F	Vapor density	4.08
Specific gravity	0.89	Ionization potential	8.20 eV
Lower explosive limit (LEL)	0.8%	Upper explosive limit (UEL)	11.0%
NFPA health rating	2	NFPA fire rating	2
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.)	2582
Sampling group
Sampler/Sampling media	CSC tube (100/50 mg) coated with 10% t-butylcatechol [SKC 226-73]
Sampling time^*	240 min
Sampling volume (TWA)^*	12 L
Sampling flow rate (TWA)^*	0.05 L/min
Sampling volume (STEL/Peak/C)^*	0.75 L
Sampling flow rate (STEL/Peak/C)^*	0.05 L/min
Analytical method instruments	GC-FID
Method reference	OSHA 89 (fully validated)
Notes	The sampling parameters and method listed above were developed for STYRENE (VINYL BENZENE; PHENYLETHYLENE) but are appropriate to use for sampling VINYL TOLUENE as well. To sample for α-methylstyrene or β-methylstyrene as described in NIOSH method 1501, follow the sampling guidance described in that method.
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 (480 mg/m³)	REL-TWA	100 ppm (480 mg/m³)	TLV-TWA	50 ppm [1992]	PEL-TWA	50 ppm (240 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL	100 ppm [1992]	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	400 ppm
Carcinogenic classifications: IARC-3, TLV-A4		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Vinyltoluene, stabilized

NIOSH: Pocket Guide to Chemical Hazards - Vinyl toluene

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Vinyl toluene. See annual publication for most recent information.
Ma, M., et al.: Influence of genetic polymorphisms of styrene-metabolizing enzymes and smoking habits on levels of urinary metabolites after occupational exposure to styrene. Toxicol. Lett. 160(1): 84-91, 2005.
National Toxicology Program: NTP toxicology and carcinogenesis studies of vinyl toluene (mixed isomers) (65%-71% meta-isomer and 32-35% para-isomer) (CAS No. 25013-15-4) in F344/N rats and BeC3F1 mice (inhalation studies). Natl. Toxicol. Program Tech. Rep. Ser. 375: 1-191, 1990.
No authors listed: Vinyl toluene. IARC Monogr. Eval. Carcinog. Risks Hum. 60: 373-388, 1994.
Pohanish, R.P. (editor): Vinyl Toluene. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 2333-2335.
Romanelli, A., Falzoi, M., Mutti, A., Bergamaschi, E. and Franchini, I.: Effects of some monocyclic aromatic solvents and their metabolites on brain dopamine in rabbits. J. Appl. Toxicol. 6(6): 431-436, 1986.

Last Updated Date : 11/01/2022

1,3,5-TRIGLYCIDYL-S-TRIAZINETRIONE

Chemical Identification
CAS #	2451-62-9
Formula	C₁₂H₁₅N₃O₆
Synonyms	TGIC, triglycidyl isocyanurate, 1,3,5-triglycidyl isocyanurate, TGT, glycidyl isocyanurate, tris(epoxypropyl)isocyanurate, s-triazine-2,4,6(1H,3H,5H)-trione, 1,3,5-tris(2,3-epoxypropyl)-s-triazine-2,4,6(1H,3H,5H)-trione. [1,3,5-triglycidyl isocyanurate (TGIC) has two stereoisomers, α and β]

Physical Properties
Physical description	White crystalline solid.
Boiling point		Molecular weight	297.27
Freezing point/melting point	203-208°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.)	T405
Sampling group
Sampler/Sampling media	GFF (37 mm), Type A/E [AP4003705]
Sampling time^*	180 min
Sampling volume (TWA)^*	180 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FID
Method reference	OSHA 1024 (fully validated)
Notes	Samples must be shipped cold overnight and stored in a freezer until analysis.
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 mg/m³ [1994]	PEL-TWA	0.005 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	NA	Skin notation	N	Skin notation	N
Notes: Not established		Notes: Not established		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: Not listed		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Tris(2, 3-Epoxypropyl)isocyanurate

NIOSH: Pocket Guide to Chemical Hazards - Tris(2, 3-Epoxypropyl)isocyanurate

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - 1,3,5-Triglycidyl-s-triazinetrione. 2017.
Allmaras, S.: Worker exposure to 1,3,5-tryglycidyl isocyanurate (TGIC) in powder paint coating operations. Appl. Occup. Environ. Hyg. 18(3): 151-153, 2003.
Anees W, Moore VC, Croft JS, Robertson AS, Burge PS: Occupational asthma caused by heated triglycidyl isocyanurate. Occup Med (Lond) 61(1):65-7, Jan 2011.
Lindell, B. and Montelius, J: Triglycidyl isocyanurate [114 KB PDF, 36 pages]. Arbete och Hälsa 18: 1-30, 2001.
Meuleman L, Goossens A, Linders C, Rochette F, Nemery B: Sensitization to triglycidylisocyanurate (TGIC) with cutaneous and respiratory manifestations. Allergy 54(7):752-6, July 1999.
Piirilä P, Estlander T, Keskinen H, Jolanki R, Laakkonen A, Pfäffli P, Tupasela O, Tuppurainen M, Nordman H.Occupational asthma caused by triglycidyl isocyanurate (TGIC). Clin Exp Allergy 27(5):510-4, May 1997.
Sastre J, Carnes J, García del Potro M, Manso L, Aguado E, Fernández-Nieto M: Occupational asthma caused by triglycidyl isocyanurate. Int Arch Occup Environ Health. 84(5):547-9, Jun 2011.
World Health Organization (WHO): Triglycidyl Isocyanurate. 1998.

Last Updated Date : 12/14/2020

N-BUTYL GLYCIDYL ETHER (BGE)†

Chemical Identification
CAS #	2426-08-6
Formula	C₇H₁₄O₂
Synonyms	BGE; 1,2-epoxy-3-butoxypropane

Physical Properties
Physical description	Colorless liquid with an irritating odor.
Boiling point	327°F	Molecular weight	130.21
Freezing point/melting point		Vapor pressure	3 mmHg at 77°F
Flash point	130°F	Vapor density
Specific gravity	0.91	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.)	0477
Sampling group
Sampler/Sampling media	CSC tube (100/50 mg) [SKC 226-01]
Sampling time^*
Sampling volume (TWA)^*	15-30 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 1616 (fully validated)
Notes
Special requirements

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device	Infrared spectrophotometer
Model/Type	Miran 1A & 1B
Sampling information (see manufacturer instructions)	0.1 ppm@8.9 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	50 ppm (270 mg/m³)	REL-TWA		TLV-TWA		PEL-TWA	25 ppm (135 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C	5.6 ppm (30 mg/m³) [15 minutes]	TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	Y	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes: Visit the ACGIH TLV site for specific data dermal sensitization (DSEN)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	250 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 - N-Butyl glycidyl ether

NIOSH: Pocket Guide to Chemical Hazards - n-Butyl glycidyl ether

Literature References

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

Last Updated Date : 04/08/2024

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

DINITROTOLUENE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

VINYL TOLUENE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

1,3,5-TRIGLYCIDYL-S-TRIAZINETRIONE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

N-BUTYL GLYCIDYL ETHER (BGE)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References