PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Methyl mercaptan 74-93-1 1064
13.00
15.01
11.01
15.02
4.08
4.05
7.01
8.00
7.00
11.00
Formula Synonyms
CH4S METHYL MERCAPTAN, MERCAPTAN MÉTHYLIQUE (DOT FRENCH), MERCAPTOMETHANE, METHANEETHIOL, METHANETHIOL, METHYL SULFHYDRATE, METILMERCAPTANO (DOT SPANISH), THIOMETHANOL, THIOMETHYL ALCOHOL
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
48.11 G -123 5.9 750 5.7 0.8665 @ 20°C 39000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.005ₑ 23ₐ 68ₐ
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.0098 45 130
Technical Basis
No technical basis available
References
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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.