Methyl methacrylate

Encyclopedia : M : ME : MET : Methyl methacrylate

>

Methyl methacrylate

General
Systematic name methyl 2-methylprop-2-enoate
Other names MMA,
2-(methoxycarbonyl)-1-propene
Molecular formula C₅H₈O₂
SMILES CC(=C)C(=O)OC
Molar mass 100.12 g/mol
Appearance clear colourless liquid
CAS number [80-62-6]
Properties
Density and phase 0.94 g/cm³
Solubility in water 1.5 g/100 ml (25 °C)
In organic solvents Soluble
Melting point -48 °C (? K)
Boiling point 101 °C (? K)
Basicity (pK_b) ?
Viscosity 0.6 cP at 20 °C
Structure
Dipole moment ? D
Hazards
MSDS External MSDS
Main hazards flammable
Flash point 2 °C (autoignition 435 °C)
R/S statement R: ? S: ?
RTECS number OZ5075000
Supplementary data page
Structure & properties n, ε_r, etc.
Thermodynamic data Phase behaviour
Solid, liquid, gas

Spectral data UV, IR, NMR, MS
Related compounds
Other anions ?
Other cations ?
Related ? ?
Related compounds ?
Except where noted otherwise, data are given for
materials in their standard state (at 25°C, 100 kPa)
[Chemical infoboxInfobox disclaimer and references]

Methyl methacrylate is a chemical compound mostly known as monomer for the production of the transparent plastic polymethyl methacrylate (PMMA).

Methyl methacrylate

General
Systematic name	methyl 2-methylprop-2-enoate
Other names	MMA, 2-(methoxycarbonyl)-1-propene
Molecular formula	C₅H₈O₂
SMILES	CC(=C)C(=O)OC
Molar mass	100.12 g/mol
Appearance	clear colourless liquid
CAS number	[80-62-6]
Properties
Density and phase	0.94 g/cm³
Solubility in water	1.5 g/100 ml (25 °C)
In organic solvents	Soluble
Melting point	-48 °C (? K)
Boiling point	101 °C (? K)
Basicity (pK_b)	?
Viscosity	0.6 cP at 20 °C
Structure
Dipole moment	? D
Hazards
MSDS	External MSDS
Main hazards	flammable
Flash point	2 °C (autoignition 435 °C)
R/S statement	R: ? S: ?
RTECS number	OZ5075000
Supplementary data page
Structure & properties	n, ε_r, etc.
Thermodynamic data	Phase behaviour Solid, liquid, gas
Spectral data	UV, IR, NMR, MS
Related compounds
Other anions	?
Other cations	?
Related ?	?
Related compounds	?
Except where noted otherwise, data are given for materials in their standard state (at 25°C, 100 kPa) [Chemical infoboxInfobox disclaimer and references]

Contents

1 Production
2 Uses
3 References
4 External links

Production

Major producers worldwide include Cyro, Atofina, BASF, Dow Chemical, Lucite, Celanese and Rohm and Haas, and Sumitomo. The United States production in 1993 amounted to 600 thousand metric tonnes per annum (mt/a), and current worldwide production is estimated at 2.1 million mt/a.

Most producers apply an acetone cyanohydrin (ACH) route, with acetone and hydrogen cyanide as raw material, and ammonium bisulfate as by-product. New technologies such as the carbonylation of ethylene with methanol and carbon monoxide to form methyl propionate, with second reaction with formaldehyde is applied as well.

Uses

The principal application of methyl methacrylate is the production of polymethyl methacrylate (PMMA) acrylic plastics. Also methyl methacrylate is used for the production of the co-polymer methyl methacrylate-butadiene-styrene (MBS), used as modifiers for PVC.

Methyl methacrylate polymers and co-polymers are used for waterborne coatings, such latex house paint.

A modern application is the use in plates that keep light spread evenly across LCD computer and TV screens.

References

External links

For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].

From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.