Occupational Safety and Health Administration

CHROMIC ACID & CHROMATES‡

Chemical Identification
CAS #	7738-94-5 (Chromic Acid), 18540-29-9 (Cr VI), 7788-98-9, 7789-09-5, 12231-18-4, 12000-34-9, 10294-40-3, 54692-53-4, 1344-38-3, 13765-19-0, 14986-48-2, 12324-08-2, 12324-05-9, 14977-61-8, 8049-64-7, 7758-97-6, 1344-37-2, 7789-00-6, 7778-50-9, 7775-11-3, 12018-32-5, 10588-01-9, 7789-06-2, 54322-60-0, 12656-85-8, 14675-41-3, 13530-65-9, 1328-67-2, 1308-13-0, 66516-58-3, 15930-94-6, 12206-12-1, 37809-34-0, 12527-08-1, 11103-86-9
Formula	H2CrO4 (Chromic Acid) and various others
Synonyms	chromic acid, chromic anhydride, chromic oxide, chromium(VI) oxide (1:3), chromium trioxide, ammonium chromate, ammonium dichromate, barium chromate, basic lead chromate, calcium chromate, chromium [VI] chloride, chromium trioxide, chromyl chloride, lead chromate, potassium chromate, potassium dichromate, sodium chromate, sodium dichromate, strontium chromate, molybdenum orange, zinc chromate, zinc chromate hydroxides, zinc potassium chromates (hydroxides)

Physical Properties
Physical description	CrO₃: Dark-red, odorless flakes or powder.
Boiling point	482°F (decomposes)	Molecular weight	100.0
Freezing point/melting point	387°F (decomposes)	Vapor pressure	very low
Flash point		Vapor density
Specific gravity	2.70	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	3	NFPA fire rating	0
NFPA reactivity rating	1	NFPA special instruction	OX- Possesses oxidizing properties
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	0689	0689 - WIPE
Sampling group
Sampler/Sampling media	For Welding and Painting Operations use Hexavalent Chromium Filters and Cassettes (37 mm PVC) [SLTC104] or (25 mm PVC) [SLTC105] [SLTC104]; For Plating Operations use 37 mm Quartz Fiber Filter coated with 1% NaOH [SLTC106] [SLTC106]	Hexavalent Chromium Filters (For Wipe Samples Only) [SLTC107]
Sampling time^*	480 min
Sampling volume (TWA)^*	960 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	IC	IC-UV
Method reference	OSHA ID-215v.2 (fully validated)	OSHA W4001 (fully validated)
Notes	All samples taken for CHROMIUM VI COMPOUNDS should be shipped to the OSHA SLTC within 24 hours after sampling by overnight delivery for stabilization and analysis.	All samples taken for CHROMIUM VI COMPOUNDS should be shipped to the OSHA SLTC within 24 hours after sampling by overnight delivery for stabilization and 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	See the "Monitoring Methods Used by OSHA" section above for details.
Bulk Method	Available

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 µg/m³ [2.5 µg/m³ Action Level] (as CrVI)	REL-TWA	0.0002 mg/m³ (8-hr TWA, as Cr)	TLV-TWA	0.0002 mg/m³ (inhalable particulate matter) [2017]	PEL-TWA	0.005 mg/m³
PEL-STEL		REL-STEL		TLV-STEL	0.0005 mg/m³ (inhalable particulate matter) [2017]	PEL-STEL	0.1 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 1910.1026, Chromium (VI). OSHA's chromium (VI) standard applies to all occupational exposures to any chromium species with a valence of positive six, regardless of form or compound, including chromates and chromic acid. OSHA has established a ceiling value of 1 mg/10m³ for any operations or sectors where the exposure limits in §1910.1026 are stayed or otherwise not in effect. See 29 CFR 1910.1000 Table Z-2.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens and Appendix C, Supplementary Exposure Limits.		Notes: skin, dermal sensitizer (DSEN), respiratory sensitizer (RSEN) (for water-soluble compounds)		Notes: See Sections 1532.2, 5206 & 8359.
Health factors: See NIH-NLM PubChem.		IDLH	15 mg/m³ (as Cr VI)
Carcinogenic classifications: NIOSH-Ca, NTP-K (hexavalent compounds) TLV-A1		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Chromic acid, solid

NIOSH: Pocket Guide to Chemical Hazards - Chromic acid and chromates

Literature References

NOAA: CAMEO Chemicals - Chromium trioxide, anhydrous.
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Chromium, [7440-47-3] and inorganic compounds. See annual publication for most recent information.
ANSI: American Standard Allowable Concentration of Chromic Acid and Chromates. January 6, 1942 (reaffirmed January 27, 1971).
ATSDR: Toxicological profile for chromium. September 2012.
Gomes E.: Incidence of chromium-induced lesions among electroplating workers in Brazil. Ind Med 41(12):21-25. 1972.
NIOSH: Draft Criteria Document Update - Occupational Exposure to Hexavalent Chromium. September 2008.
NIOSH: Occupational Health Guideline for Chemical Hazards - Chromic Acid and Chromates. September 1978.
OSHA: Standard Interpretation - Enforcement of the Chromate and Chromic Acid PEL. April 8, 1991 (edited on March 25, 2008).
Wang, T.C., Jia, G., Song, Y.S., Zhang, J., Ma, Y.H., Feng, W.Y., Liu, L.Z., Zhang, N., Zhou, J.W., Yan, L., Zhen, S., Qian, Q.: Effects of chronic chromate exposure on human serum prostate specific antigen: a cross sectional study. Ind Health. 50(2):95-102, 2012.

Last Updated Date : 11/29/2022

KAOLIN†

Chemical Identification
CAS #	1332-58-7
Formula	Mixture
Synonyms	China clay; clay; hydrated aluminum silicate; hydrite; porcelain clay

Physical Properties
Physical description	White to yellowish or grayish powder. Odorless.
Boiling point		Molecular weight	varies
Freezing point/melting point		Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	1.8-2.6	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.)	1568 (total); request using analyte code 9135	K100 (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	2 mg/m³ (respirable particulate matter) [1990]	PEL-TWA	2 mg/m³ (respirable dust)
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: The value is for particulate matter containing no asbestos and <1% crystalline silica.		Notes: Containing no asbestos and <1% crystalline silica)
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 - Kaolin

NIOSH: Pocket Guide to Chemical Hazards - Kaolin

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Kaolin. See annual publication for most recent information.
Altekruse, E.B., Chaudhary, B.A., Pearson, M.G. and Morgan, W.K.: Kaolin dust concentrations and pneumoconiosis at a kaolin mine. Thorax 39(6): 436-441, 1984.
Chaudhary, B.A., Kanes, G.J. and Pool, W.H.: Pleural thickening in mild kaolinosis. South. Med. J. 90(11): 1106-1109, 1997.
Levin, J.L., Frank, A.L., Williams, M.G., McConnell, W., Suzuki, Y. and Dodson, R.F.: Kaolinosis in a cotton mill worker. Am. J. Ind. Med. 29(2): 215-221, 1996.

Last Updated Date : 01/04/2021

DI-N-HEXYL PHTHALATE

Chemical Identification
CAS #	84-75-3
Formula	C₂₀H₃₀O₄
Synonyms	phthalic acid di-n-hexyl ester

Physical Properties
Physical description	Yellow-brown oily viscous liquid with a slight aromatic odor.
Boiling point	662°F at 735 mmHg	Molecular weight	334.5
Freezing point/melting point	"-72°F"	Vapor pressure
Flash point	350°F	Vapor density	11.5
Specific gravity	0.995	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.)	D700
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^*	240 min
Sampling volume (TWA)^*	240 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	GC-FID
Method reference	OSHA PV2076 (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		TLV-TWA		PEL-TWA
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	NA	Skin notation	NA	Skin notation	NA
Notes: Not established		Notes: Not established		Notes: Not established		Notes: Not established
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 - Di-n-hexyl phthalate

NIOSH: Pocket Guide to Chemical Hazards -

Literature References

Last Updated Date : 12/18/2018

ASBESTOS, ALL FORMS‡

Chemical Identification
CAS #	1332-21-4, [12172-67-7 (Ferroactinolite asbestos), 17068-78-9 (Anthophyllite asbestos), 12172-73-5 (Amosite asbestos), 12001-29-5 (Chrysotile asbestos), 12001-28-4 (Crocidolite asbestos), 14567-73-8 (Tremolite asbestos)]
Formula	chrysotile Mg₃Si₂O₅(OH)₄ crocidolite Na₂Fe₃ ²⁺Fe₂ ³⁺Si₈O₂₂(OH)₂ Amosite (Mg,Fe)₇Si₈O₂₂(OH)₂₂ tremolite-actinolite series Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ anthophyllite (Mg,Fe)₇Si₈O₂₂(OH)₂
Synonyms	actinolite; Amosite (cummingtonite-grunerite); anthophyllite, chrysotile; crocidolite (riebeckite); tremolite

Physical Properties
Physical description	White or greenish (chrysotile), blue (crocidolite), or gray-green (amosite) fibrous, odorless solids.
Boiling point		Molecular weight	varies
Freezing point/melting point	dehydroxylates at 550-750°C (1,022-1,382°F)	Vapor pressure	0 mmHg (approx)
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.)	9020
Sampling group
Sampler/Sampling media	Mixed cellulose ester filter (MCEF) 0.8 microns (25 mm), with electrically conductive 50 mm extension cowl [GCS25080]
Sampling time^*	30-480 min (120 recommended)
Sampling volume (TWA)^*	25-2400 L
Sampling flow rate (TWA)^*	0.5-2.5 L/min, 0.5-5.0 L/min (Maritime)
Sampling volume (STEL/Peak/C)^*	48 L
Sampling flow rate (STEL/Peak/C)^*	1.6 L/min
Analytical method instruments	PCM
Method reference	OSHA ID-160 (fully validated)
Notes	Adjust to give 100-1300 fiber/mm. Do not request multiple analytes. Do not overload. If dust is high, reduce air volume to avoid overloading. A minimum of 2 blanks or 10% of the number of samples are required for every set.
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 sampling is not recommended - Contact SLTC if there is a question
Bulk Method	See OSHA ID-191 - take samples using 20 mL scintillation vials. Do not use plastic bags. Send to SLTC in separate packaging from air samples.

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	0.1 fiber/cm³, 1.0 fiber/cm³ [Excursion Limit 30 min]	REL-TWA	Lowest feasible concentration. 0.1 fiber/cm³ for fibers >5 µm	TLV-TWA		PEL-TWA	0.1 fiber/cm³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL	1 fiber/cm³
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1001, Asbestos.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens. Also see Appendix C, Supplementary Exposure Limits.		Notes: Visit the ACGIH TLV site for specific data See footnote (F) for additional information		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: EPA-A, IARC-1, NIOSH-Ca, NTP-K, OSHA-Ca, TLV-A1		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Asbestos

NIOSH: Pocket Guide to Chemical Hazards - Asbestos

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Asbestos, all forms. See annual publication for most recent information.
EPA: Hazard Summary - Asbestos
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Asbestos, All Forms. See annual publication for most recent information.
Camargo MC, Stayner LT, Straif K, Reina M, Al-Alem U, Demers PA, Landrigan PJ: Occupational exposure to asbestos and ovarian cancer: a meta-analysis. Environ Health Perspect. 119(9):1211-7, September 2011.
Clin B, Morlais F, Launoy G, Guizard AV, Dubois B, Bouvier V, Desoubeaux N, Marquignon MF, Raffaelli C, Paris C, Galateau-Salle F, Guittet L, Letourneux M: Cancer incidence within a cohort occupationally exposed to asbestos: a study of dose-response relationships. Occup Environ Med. 68(11):832-6, November 2011.
Harding AH, Darnton A, Wegerdt J, McElvenny D: Mortality among British asbestos workers undergoing regular medical examinations (1971-2005). Occup Environ Med. 66(7):487-95, July 2009.
NIOSH: Occupational Safety and Health Guideline for Asbestos. 1988.
OSHA: Occupational Exposure to Asbestos. 1994.
Ramroth H, Ahrens W, Dietz A, Becher H: Occupational asbestos exposure as a risk factor for laryngeal carcinoma in a population-based case-control study from Germany. Am J Ind Med. 54(7):510-4, July 2011.

Last Updated Date : 04/03/2024

CAPTAN

Chemical Identification
CAS #	133-06-2
Formula	C₉H₈Cl₃NO₂S
Synonyms	captane; N-trichloromethylmercapto-4-cyclohexene-1,2-dicarboximide; Merpan; Orthocide; Pillarcap

Physical Properties
Physical description	Odorless, white, crystalline powder.
Boiling point	decomposes	Molecular weight	300.6
Freezing point/melting point	352°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	1.74	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.)	0529
Sampling group
Sampler/Sampling media	OSHA versatile sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg) with GFF enclosed [SKC 226-30-16]
Sampling time^*
Sampling volume (TWA)^*	60 L
Sampling flow rate (TWA)^*	1 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	HPLC-UV
Method reference	OSHA PV2093 (partially validated)
Notes
Special requirements

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

Bulk/Wipe Method
Wipe Sampler/Sampling media	Wipe with GFF (37 mm), Type A/E [AP4003705]
Bulk Method	Limit the amount of bulk submitted to 1 g or 1 mL.

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA	5 mg/m³	TLV-TWA		PEL-TWA	5 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	N	Skin notation	N	Skin notation	N
Notes: Not established		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A		Notes: Visit the ACGIH TLV site for specific data dermal sensitizer (DSEN)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: IARC-3, NIOSH-Ca, TLV-A3		Notes: Ca
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Captan

NIOSH: Pocket Guide to Chemical Hazards - Captan

Literature References

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

Last Updated Date : 03/25/2024

SODIUM TETRABORATE, ANHYDROUS

Chemical Identification
CAS #	1330-43-4
Formula	B₄Na₂O₇
Synonyms	anhydrous borax; borax dehydrated; disodium salt of boric acid; disodium tetrabromate; fused borax; sodium borate (anhydrous); sodium tetraborate

Physical Properties
Physical description	White to gray, odorless powder.
Boiling point	2867°F (decomposes)	Molecular weight	201.2
Freezing point/melting point	1366°F	Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	2.37	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.)	0374
Sampling group
Sampler/Sampling media	Mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) and filter spacer with Na₂CO₃ impregnated backup pad, in a 3-piece cassette [SKC 225-9001]
Sampling time^*	240-480 min
Sampling volume (TWA)^*	480-960 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments	AAS/AES
Method reference	OSHA ID-121 (fully validated)
Notes	Results will be reported from the elemental analysis for the element only; the stated identity of the actual sample contents is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes. An elemental result provided may be converted to the desired compound by multiplying the result by the appropriate stoichiometric factor. A 91B report specific to the compound (including the stoichiometric conversion) may by be provided upon request by contacting the laboratory. The stoichiometric factor for sodium tetraborate, anhydrous from sodium is 4.376.
Special requirements

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA	1 mg/m³	TLV-TWA	2 mg/m³ (inhalable particulate matter) [2004]	PEL-TWA	5 mg/m³
PEL-STEL		REL-STEL		TLV-STEL	6 mg/m³ (inhalable particulate matter) [2004]	PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	N	Skin notation	N	Skin notation	N
Notes: Not established		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: TLV-A4		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Sodium peroxoborate, anhydrous

NIOSH: Pocket Guide to Chemical Hazards - Borates, tetra, sodium salts (Anhydrous)

Literature References

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

Last Updated Date : 01/12/2021

XYLENE, ALL ISOMERS (DIMETHYLBENZENE)†

Chemical Identification
CAS #	1330-20-7
Formula	C₈H₁₀
Synonyms	1,2(3 or 4)-dimethylbenzene; ortho(meta or para)-xylene; o(m or p)-xylol

Physical Properties
Physical description	Colorless liquid with an aromatic odor.
Boiling point	281°F	Molecular weight	106.17
Freezing point/melting point		Vapor pressure	9 mmHg for m and p-xylene, 7 mmHg for o-xylene
Flash point	81-90°F	Vapor density
Specific gravity	0.86-0.88	Ionization potential	8.44-8.56 eV
Lower explosive limit (LEL)	0.9-1.1%	Upper explosive limit (UEL)	6.7-7.0%
NFPA health rating	2	NFPA fire rating	3
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.)	2590	2590
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 1002 (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	Detector tube	Detector tube	CMS Chip
Model/Type	Gastec 123	Matheson-Kitagawa 8014-143SA	Xylene, 10-300 ppm range
Sampling information (see manufacturer instructions)	0.5 to 2 strokes, 1-625 ppm range, uncertainty 16% for 10-50 ppm, 8% for 50-200 ppm	2 strokes, 2-1000 ppm range

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	100 ppm (435 mg/m³)	REL-TWA	100 ppm (435 mg/m³)	TLV-TWA	20 ppm [2021]	PEL-TWA	100 ppm (435 mg/m³)
PEL-STEL		REL-STEL	150 ppm (655 mg/m³)	TLV-STEL		PEL-STEL	150 (655 mg/m³)
PEL-C		REL-C		TLV-C		PEL-C	300 ppm
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes: BEI®, OTO (ototoxicant) for p-xylene and mixtures that contain p-xylene		Notes: See also Section 5198.
Health factors: See NIH-NLM PubChem.		IDLH	900 ppm
Carcinogenic classifications: IARC-3, TLV-A4, EPA-I		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Xylene, [mixed isomers]

NIOSH: Pocket Guide to Chemical Hazards - m-Xylene

Literature References

o-Xylene, p-Xylene.
ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Xylene (all isomers). See annual publication for most recent information.
EPA: Hazard Summary - Xylenes.
ATSDR Toxicological Profile for Xylene, 2007
EPA: Integrated Risk Information System - Xylenes. 2003.
Gonzalez-Reche, L.M., Schettgen, T. and Angerer, J.: New approaches to the metabolism of xylenes: verification of the formation of phenylmercapturic acid metabolites of xylenes. Arch. Toxicol. 77(2): 80-85, 2003.
Korsak, Z; Wisniewska-Knypl, J; Swiercz, R. (1994) Toxic effects of subchronic combined exposure to n-butyl alcohol and m-xylene in rats. Int J Occup Med Environ Health 7:155-166.
NIOSH: Occupational Health Guideline for Xylene. 1978.
Hood RD, Ottley MS Developmental effects associated with exposure to xylene: a review.
Drug Chem Toxicol. 1985;8(4):281-97.
Sulkowski, W.J. et al.: Effects of occupational exposure to a mixture of solvents on the inner ear - a field study. Int. J. Occup. Med. Environ. Health 15(3): 247-256, 2002.

Last Updated Date : 04/06/2021

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)

DIVINYL BENZENE

Chemical Identification
CAS #	1321-74-0
Formula	C₁₀H₁₀
Synonyms	diethenylbenzene; DVB; vinylstyrene [Note: Commercial product contains all 3 isomers, but m-isomer predominates. Usually contains an inhibitor to prevent polymerization.

Physical Properties
Physical description	Pale, straw-colored liquid.
Boiling point	392°F	Molecular weight	130.2
Freezing point/melting point	-125°F	Vapor pressure	0.7 mmHg
Flash point	169°F (open cup)	Vapor density
Specific gravity	0.93	Ionization potential
Lower explosive limit (LEL)	1.1%	Upper explosive limit (UEL)	6.2%
NFPA health rating	1	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.)	V119
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
Special requirements

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

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA		REL-TWA	10 ppm (50 mg/m³)	TLV-TWA	10 ppm [1990]	PEL-TWA	10 ppm (50 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	NA	Skin notation	N	Skin notation	N	Skin notation	N
Notes: Not established		Notes:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: Not listed		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Divinyl benzene

NIOSH: Pocket Guide to Chemical Hazards - Divinyl benzene

Literature References

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

Last Updated Date : 12/28/2020

TRICHLORONAPHTHALENE†

Chemical Identification
CAS #	1321-65-9
Formula	C₁₀H₅Cl₃
Synonyms	Halowax; Nibren wax; Seekay wax

Physical Properties
Physical description	Colorless to pale-yellow solid with an aromatic odor.
Boiling point	579-669°F	Molecular weight	231.5
Freezing point/melting point	199°F	Vapor pressure	<1 mmHg
Flash point	392°F (open cup)	Vapor density
Specific gravity	1.58	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	5 mg/m³	REL-TWA	5 mg/m³	TLV-TWA	5 mg/m³ [1970]	PEL-TWA	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:		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	50 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 - Trichloronaphthalene

NIOSH: Pocket Guide to Chemical Hazards - Trichloronaphthalene

Literature References

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

Last Updated Date : 01/13/2021

PENTACHLORONAPHTHALENE†

Chemical Identification
CAS #	1321-64-8
Formula	C₁₀H₃Cl₅
Synonyms	Halowax 1013; 1,2,3,4,5-pentachloronaphthalene

Physical Properties
Physical description	Pale-yellow or white solid or powder with an aromatic odor.
Boiling point	636°F	Molecular weight	300.4
Freezing point/melting point	248°F	Vapor pressure	<1 mmHg
Flash point		Vapor density
Specific gravity	1.67	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	0.5 mg/m³	REL-TWA	0.5 mg/m³	TLV-TWA	0.5 mg/m³ [1970]	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: See IDLH documentation for Pentachloronaphthalene		Notes:		Notes:
Health factors: See NIH-NLM PubChem.		IDLH	Unknown (lack of toxicity data)
Carcinogenic classifications:		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - PENTACHLORONAPTHALENE

NIOSH: Pocket Guide to Chemical Hazards - Pentachloronaphthalene

Literature References

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

Last Updated Date : 11/02/2022

CHROMIC ACID & CHROMATES‡

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

KAOLIN†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DI-N-HEXYL PHTHALATE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

ASBESTOS, ALL FORMS‡

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

CAPTAN

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

SODIUM TETRABORATE, ANHYDROUS

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

XYLENE, ALL ISOMERS (DIMETHYLBENZENE)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

DIVINYL BENZENE

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

TRICHLORONAPHTHALENE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References

PENTACHLORONAPHTHALENE†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References