Methyl methacrylate
CAS 80-62-6C5H8O2100.12 g/mol
Methyl methacrylate is an enoate ester having methacrylic acid as the carboxylic acid component and methanol as the alcohol component. It has a role as an allergen and a polymerisation monomer. It is a methyl ester and an enoate ester. It is functionally related to a methacrylic acid.
IUPAC: methyl 2-methylprop-2-enoate
PubChem
Physical & Chemical Properties
| Melting Point | -54 °F (NTP, 1992) |
| Boiling Point | 213.8 °F at 760 mmHg (NTP, 1992) |
| Density | 0.945 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Solubility | 1 to 10 mg/mL at 63.5 °F (NTP, 1992) |
| Flash Point | 50 °F (NTP, 1992) |
| Vapor Pressure | 40 mmHg at 77.9 °F (NTP, 1992) |
| Appearance | Methyl methacrylate monomer appears as a clear colorless liquid. Slightly soluble in water and floats on water. Vapors heavier than air. Vapors irritate the eyes and respiratory system. Containers must be heavily insulated or shipped under refrigeration. An inhibitor such as hydroquinone, hydroquinone methyl ester and dimethyl t-butylphenol is added to keep the chemical from initiating polymerization. The chemical may polymerize exothermically if heated or contaminated with strong acid or base. If the polymerization takes place inside a container, the container may rupture violently. Used to make plastics. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2916
Data: UN Comtrade
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