Agent Name

Methacrylic acid

CAS Number

79-41-4

Formula

C4-H6-O2

Major Category

Other Classes

Synonyms

2-Methyl-2-propenoic acid; 2-Methylacrylic acid; 2-Methylenepropionic acid; 2-Methylpropenoic acid; 2-Propenoic acid, 2-methyl-; Acide methacrylique [French]; Acido metacrilico [Spanish]; Acrylic acid, 2-methyl-; Kyselina methakrylova [Czech]; Methacrylic acid; Propenoic acid, 2-methyl; Propionic acid, 2-methylene-; alpha-Methylacrylic acid; [ChemIDplus] UN2531

Category

Organic Acids

Description

Colorless liquid or solid (below 61 degrees F) with an acrid, repulsive odor; [NIOSH]

Sources/Uses

Used to synthesize organic compounds and as a monomer for plastics; [ACGIH]

Comments

Methacrylic acid can cause skin burns and, after acute heavy inhalation exposure, pulmonary edema. [ICSC] Causes second degree burns after a few minutes skin exposure; [CHRIS] Corrosive to skin; [Quick CPC] Methacrylic acid was negative in skin sensitization testing; [Reference #1] Methacrylic acid, stabilized (UN2531) has warning of explosive polymerization; [ERG 2016]

Reference Link

Occupational allergic contact dermatitis caused by photobonded sculptured nails and a review of (meth) acrylates in nail cosmetics

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TLV (ACGIH)

20 ppm

MAK

50 ppm

Vapor Pressure

0.99 mm Hg

Explosive Polymerization

Yes

Explanatory Notes

Flash point = 77 deg C;

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.