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Methyl methacrylate

Not to be confused with methyl acrylate.
Methyl methacrylate
Methyl methacrylate
Methyl methacrylate
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 Edit this at Wikidata
EC Number
  • 201-297-1
2691
KEGG
RTECS number
  • OZ5075000
UNII
UN number 1247
  • InChI=1S/C5H8O2/c1-4(2)5(6)7-3/h1H2,2-3H3 checkY
    Key: VVQNEPGJFQJSBK-UHFFFAOYSA-N checkY
  • O=C(OC)C(=C)C
Properties
C5H8O2
Molar mass 100.117 g·mol−1
Appearance Colorless liquid
Odor acrid, fruity[1]
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 [2]
Vapor pressure 29 mmHg (20 °C)[1]
-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:
GHS02: FlammableGHS07: Exclamation mark
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
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazards (white): no code
2
3
2
Flash point 2 °C (36 °F; 275 K)
435 °C (815 °F; 708 K)
Explosive limits 1.7%-8.2%[1]
Lethal dose or concentration (LD, LC):
8420-10000 mg/kg (rat, oral)
5000-7500 mg/kg (rabbit, dermal)
18750 ppm (rat, 4 hr)
4447 ppm (mouse, 2 hr)
3750 ppm (rat)
4808 ppm (mammal)[3]
4400 ppm (rat, 8 hr)
4400 ppm (rabbit, 8 hr)
4207 ppm (rabbit, 4.5 hr)
4567 ppm (guinea pig, 5 hr)[3]
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 100 ppm (410 mg/m3)[1]
REL (Recommended)
 TWA 100 ppm (410 mg/m3)[1]
IDLH (Immediate danger)
 1000 ppm[1]
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).
☒N verify (what is checkY☒N ?)

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).[4]

  1. ^ a b c d e f NIOSH Pocket Guide to Chemical Hazards. "#0426". National Institute for Occupational Safety and Health (NIOSH).
  2. ^ "Methyl methacrylate". Chemsrc.com. Retrieved 30 November 2021.
  3. ^ a b "Methyl methacrylate". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  4. ^ Cite error: The named reference Ull was invoked but never defined (see the help page).

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