PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Methacrylaldehyde 78-85-3 2396
14.01
14.02
11.01
Formula Synonyms
C4H6O METHACRYLALDEHYDE, 2-FORMYL-1-PROPENE, 2-METHYL-2-PROPENAL, 2-METHYLACROLEIN, 2-METHYLENEPROPANAL, 2-METHYLPROPENAL, ALPHA-METHACROLEIN, ALPHA-METHYLACROLEIN, ALPHA-METHYLACRYLALDEHYDE, ISOBUTENAL, METACRILALDEHÍDO (DOT SPANISH), METACRILALDEHÍDO, INHIBIDO (DOT SPANISH), METHACROLEIN, METHACRYLALDEHYDE, INHIBITED, METHACRYLIC ALDEHYDE, METHYLACROLEIN, MÉTHYLACROLÉINE (DOT FRENCH), MÉTHYLACROLÉINE, STABILISÉE (DOT FRENCH), METHYLACRYLALDEHYDE
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
70.1 L -81 120 20 0.830 @ 20°C
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.2ₐ 0.33ₐ 3.5ₐ
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.57 0.95 10
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.