PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Perchloromethyl mercaptan 594-42-3 1670
14.01
11.01
14.02
7.01
11.00
8.00
4.10
4.08
4.07
10.00
Formula Synonyms
CCl4S PERCHLOROMETHYL MERCAPTAN, (TRICHLOROMETHYL)SULFENYL CHLORIDE, CLAIRSIT, MERCAPTAN MÉTHYLIQUE PERCHLORÉ (DOT FRENCH), METHANESULFENIC ACID, TRICHLORO-, CHLORIDE, METHANESULFENYL CHLORIDE, TRICHLORO-, PCM, PERCHLORO-METHYL-MERCAPTAN, PERCHLORO-METHYL-MERCAPTAN (DOT), PERCHLOROMETHANETHIOL, PERCLOROMETILMERCAPTANO (DOT SPANISH), PMM, THIOCARBONYL TETRACHLORIDE, THRICHLOROMETHANESULPHENYL CHLORIDE, TRICHLORMETHYL SULFUR CHLORIDE, TRICHLOROMETHANE SULFENYL CHLORIDE, TRICHLOROMETHANE SULFONYL CHLORIDE, TRICHLOROMETHANE SULFURYL CHLORIDE, TRICHLOROMETHANESULFENYL CHLORIDE, TRICHLOROMETHANESULPHENYL CHLORIDE, TRICHLOROMETHANETHIOL, TRICHLOROMETHYL MERCAPTAN, TRICHLOROMETHYL SULFOCHLORIDE, TRICHLOROMETHYL SULFUR CHLORIDE, TRICHLOROMETHYLSULFENYL CHLORIDE, TRICHLOROMETHYLSULPHENYL CHLORIDE
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
185.89 L 149 3 20 1.6947 @ 20°C
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.013 0.30 0.90
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.099 2.3 6.8
Technical Basis
A review of available sources identified exposure limits for this chemical including AEGLs. The AEGLs were selected as the TEELs due to their priority among the emergency exposure limits (Section 1).
• TEEL-1 = AEGL-1
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values consistent with Rev. 29A*.
References
Chemical information: Retrieved from Table 4-2 of the EPA Technical Support Document. https://www.epa.gov/aegl/perchloromethyl-mercaptan-results-aegl-program
AEGLs: https://www.epa.gov/aegl/perchloromethyl-mercaptan-results-aegl-program
Other exposure limits: https://www.osha.gov/chemicaldata/432
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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.