PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Methacrylonitrile; (Methylacrylonitrile) 126-98-7 3079
14.01
14.02
7.01
4.05
11.00
4.02
7.00
4.10
4.06
4.07
Formula Synonyms
C4H5N METHACRYLONITRILE, INHIBITED, 1-METHYLETHENYL CYANIDE, 2-CYANO-1-PROPENE, 2-CYANOPROPENE, 2-CYANOPROPENE-1, 2-METHYL-2- PROPENENITRILE, 2-METHYL-2-PROPENENITRILE, 2-METHYLACRYLONITRILE, 2-METHYLPROPENENITRILE, 2-PROPENE- NITRILE, 2-METHYL-, 2-PROPENENITRILE, 2-METHYL, 2-PROPENENITRILE, 2-METHYL-, ALPHA-METHACRYLONITRILE, ALPHA-METHYLACRYLONITRILE, ISOPRENE CYANIDE, ISOPROPENE CYANIDE, ISOPROPENYLNITRILE, MAN, METACRILONITRILO, INHIBIDO (DOT SPANISH), METHACRYLNITRILE, METHACRYLONITRILE, MÉTHACRYLONITRILE, STABILISÉ (DOT FRENCH), METHYLACRYLONITRILE, RCRA WASTE NUMBER U152, USAF ST-40, USAF ST40
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
67.1 L -36 90.3 71.2 25 0.805 @ 20°C 20000
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.091 1ₐ 3.1ₐ
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.25 2.7 8.5
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.