Methyl isopropenyl ketone
Agent Name
Methyl isopropenyl ketone
CAS Number
814-78-8
Formula
C5-H8-O
Major Category
Plastics & Rubber
Synonyms
2-Methyl-1-buten-3-one; 2-Methyl-1-butene-3-one; 3-Buten-2-one, 3-methyl-; 3-Butene-2-one, 3-methyl; 3-Methyl-3-buten-2-on [German]; 3-Methyl-3-buten-2-one; 3-Methyl-3-butene-2-one; 3-Methylene-2-butanone; Isopropenyl methyl ketone; Ketone, methyl isopropenyl; Methyl butenone; Methyl isopropenyl ketone; Propen-2-yl methyl ketone; [ChemIDplus] UN1246
Category
Other Monomers
Description
Clear liquid with pleasant odor; [Hawley]
Sources/Uses
Used to make plastics; [HSDB]
Comments
Highly toxic by inhalation, skin absorption, and ingestion; A skin, eye, and respiratory tract irritant; Strong lachrymator; [HSDB] Readily polymerizes; Explosive in air at 1.8-9.0%; [Hawley] Methyl isopropenyl ketone, stabilized (UN1246) has warning of explosive polymerization; [ERG 2016]
Biomedical References
Exposure Assessment
Vapor Pressure
42 mm Hg
Lethal Concentration
LCLo (rat) = 125 ppm/4h
Explosive Polymerization
Yes
Explanatory Notes
Flash point = 9 deg C; [HSDB]
NFPA
may ignite at ambient temp
Adverse Effects
Lachrymator
Yes
Diseases, Processes, and Activities Linked to This Agent
Other Information
No other related information on this agent was found.