Methacrolein
Agent Name
Methacrolein
Alternative Name
Methacrylaldehyde
CAS Number
78-85-3
Formula
C4-H6-O
Major Category
Other Classes
Synonyms
2-Methyl-2-propenal; 2-Methylacrolein; 2-Methylenepropanal;2-Methylpropenal; 2-Methylpropenal [Czech]; 2-Propenal, 2-methyl-; Acrolein, 2-methyl-; Isobutenal; Methacrolein; Methacrylaldehyde; Methacrylic aldehyde; Methakrylaldehyd [Czech]; Methylacrylaldehyde; alpha-Methylacrolein; UN2396; [ChemIDplus] UN2396
Category
Aldehydes
Description
A colorless liquid with a characteristic odor; [ICSC]
Sources/Uses
Used as a chemical intermediate and a monomer to produce resins; [HSDB]
Comments
Like acrolein (VP= 274; LC50 (mouse) = 66 ppm; LCLo (human) = 5.5 ppm), methacrolein (VP = 154; LCLo (mouse) = 125 ppm) is a skin and respiratory tract irritant with the potential to cause acute lung injury; [HSDB] Methacrylaldehyde, stabilized (UN2396) has warning of explosive polymerization; [ERG 2016]
Biomedical References
Exposure Assessment
Vapor Pressure
155 mm Hg
Lethal Concentration
LCLo (rat) = 125 ppm/4H
Explosive Polymerization
Yes
Explanatory Notes
VP from ChemIDplus;
NFPA
may ignite at ambient temp
Adverse Effects
Toxic Pneumonitis
Yes
Diseases, Processes, and Activities Linked to This Agent
Other Information
No other related information on this agent was found.