PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Isopentane; (Ethyldimethylmethane; 2-Methylbutane) 78-78-4 1265
11.00
8.00
15.01
11.01
7.01
7.00
4.08
4.07
3.08
3.11
Formula Synonyms
C5H12 ISOPENTANE, 1,1,2-TRIMETHYLETHANE, 2-METHYLBUTANE, BUTANE, 2-METHYL-, ETHYLDIMETHYLMETHANE, ISO-PENTANE, ISOAMYLHYDRIDE, ISOPENTANE (DOT FRENCH), ISOPENTANO (DOT SPANISH), METHYLBUTANE, UN 1265
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
72.17 S -160.5 30.2 595 21.1 0.62 14000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
3000* 33000*** 200000***
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
8900 97000 590000
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.