Methyl methacrylate
Methyl methacrylate (MMA) is an organic compound with the formula CH2=C(CH3)COOCH3. This colorless liquid, the methyl ester of methacrylic acid (MAA), is a monomer produced on a large scale for the production of poly(methyl methacrylate) (PMMA).
| Names | |
|---|---|
| Preferred IUPAC name
Methyl 2-methylprop-2-enoate | |
| Other names
Methyl 2-methylpropenoate methyl methacrylate MMA 2-(methoxycarbonyl)-1-propene | |
| Identifiers | |
3D model (JSmol) |
|
| 605459 | |
| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.001.180 |
| EC Number |
|
| 2691 | |
| KEGG | |
PubChem CID |
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| RTECS number |
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| UNII | |
| UN number | 1247 |
CompTox Dashboard (EPA) |
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| Properties | |
| C5H8O2 | |
| Molar mass | 100.117 g·mol−1 |
| Appearance | Colorless liquid |
| Odor | acrid, fruity |
| Density | 0.94 g/cm3 |
| Melting point | −48 °C (−54 °F; 225 K) |
| Boiling point | 101 °C (214 °F; 374 K) |
| 1.5 g/100 ml | |
| log P | 1.35 |
| Vapor pressure | 29 mmHg (20°C) |
| -57.3·10−6 cm3/mol | |
| Viscosity | 0.6 cP at 20 °C |
| Structure | |
| 1.6–1.97 D | |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
Flammable |
| GHS labelling: | |
| Danger | |
| H225, H315, H317, H335 | |
| P210, P233, P240, P241, P242, P243, P261, P264, P271, P272, P280, P302+P352, P303+P361+P353, P304+P340, P312, P321, P332+P313, P333+P313, P362, P363, P370+P378, P403+P233, P403+P235, P405, P501 | |
| Flash point | 2 °C (36 °F; 275 K) |
| 435 °C (815 °F; 708 K) | |
| Explosive limits | 1.7%-8.2% |
| Lethal dose or concentration (LD, LC): | |
LC50 (median concentration) |
18750 ppm (rat, 4 hr) 4447 ppm (mouse, 2 hr) 3750 ppm (rat) 4808 ppm (mammal) |
LCLo (lowest published) |
4400 ppm (rat, 8 hr) 4400 ppm (rabbit, 8 hr) 4207 ppm (rabbit, 4.5 hr) 4567 ppm (guinea pig, 5 hr) |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 100 ppm (410 mg/m3) |
REL (Recommended) |
TWA 100 ppm (410 mg/m3) |
IDLH (Immediate danger) |
1000 ppm |
| Safety data sheet (SDS) | Methyl methacrylate MSDS |
| Supplementary data page | |
| Methyl methacrylate (data page) | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
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