PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Isobutyric acid 79-31-2 2529
11.01
14.01
14.02
4.07
4.08
Formula Synonyms
C4H8O2 ISOBUTYRIC ACID, 2-METHYLPROPANOIC ACID, 2-METHYLPROPIONIC ACID, ACIDE ISOBUTYRIQUE (DOT FRENCH), ACIDO ISOBUTÍRICO (DOT SPANISH), ALPHA-METHYLPROPANOIC ACID, ALPHA-METHYLPROPIONIC ACID, DIMETHYLACETIC ACID, I-BUTYRIC ACID, ISO-BUTYRIC ACID, ISOBUTANOIC ACID, ISOPROPYLFORMIC ACID, PROPANE-2-CARBOXYLIC ACID
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
88.12 L -47 1 14.7 0.949 @ 20°C 20000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.23 2.6 15
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.83 9.4 54
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.