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]

Exposure Assessment
Vapor Pressure

155 mm Hg

Lethal Concentration

LCLo (rat) = 125 ppm/4H

Flammability (NFPA)

3: May ignite at ambient temperature

Adverse Effects
Toxic Pneumonitis

Yes

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Other Information

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