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Methyl methacrylate

Abbreviation MMA
Plant Niigata
Main Applications Acrylic board, molding compound, coating compounds
Existing Chemical Substance No. (2)-1036


Molecular Weight 100
Appearance Colorless transparent liquid
Odor Pungent odor
Refractive Index (25℃) 1.4118~1.4125
Boiling Point (℃ 760mmHg) 101
Freezing Point (℃ 760mmHg) -48
Flash Point (℃) 11 (Tagliabue (Tag) Closed Cup)
Ignition Temperature (℃) 421
Flammability Limits/Range (vol%) 2.1~12.5
Vapour Pressure 3,200Pa 24mmHg (10℃)
10,799Pa 81mmHg(40℃)
Viscosity (CP 25℃) 0.569
Solubility 1.59wt% (20℃) in water
Polymerize under sunlight and heat

Applicable Laws

Industrial Safety and Health Law Hazardous material, flammable substance
High Pressure Gas
Fire Service Law Class 4 Petroleum No.1
Poisonous and Deleterious Substances Control Law
Law on the Prevention of Marine Pollution and Maritime Disaster Hazardous fluid class D
Ship Safety Law Hazardous material, inflammable liquids
Civil Aeronautics Law Explosives, inflammable liquid
Other Major Applicable Laws

Classification of Hazard

Classification Inflammable liquid
Hazardous Inflammable liquid
Harmful Long contact with the skin causes delipidization and drying, resulting in cracks.
May cause allergic reaction or eczema on the skin or the mucous membrane of mouth, possibly with inflammation of the nails. May sensitize the air passage or the skin.

Product Standard

Color Number (APHA) 5 or less
Specific Gravity (20/4℃) 0.942~0.946
Free Acid (%) 0.005 or less
Purity (%) No less than 99.8
Water Content (%) 0.05 or less
Polymerization Inhibitor (ppm standard) TOPANOL5,TOPANOL10, MEHQ3

Inquiries Concerning Products

Basic Chemicals Business Sector
Basic Chemicals Division I
Sales & Marketing Department
TEL:+81-3-3283-4788 / FAX:+81-3-3214-0930