Methyl methacrylate flash point

Methyl methacrylate (melting point -48°C, boiling point 100°C, density 0.9394, flash point 9°C) is produced by the acetone cyanohydrin process in which the acetone cyanohydrin (from the reaction of acetone with hydrogen cyanide, q.v.) is reacted with sulfuric acid to yield methacrylamide sulfate, which is further hydrolyzed and esterified. The process is continuous. 

METHACRYLATE de METHYLE (French) (80-62-6) Forms heat-sensitive explosive mixture with air (flash point 50°F/10°C). Unless inhibited, forms unstable peroxides. Violent reaction with strong oxidizers, benzoyl peroxide, or other polymerization initiators. Elevated temperatures, light, contamination can cause spontaneous, explosive polymerization. Incompatible with caustics, nitrates, strong acids, aliphatic amines, alkanolamines, peroxides. 

Methyl methacrylate and some of the other related monomers that are typically used in acrylic adhesives are shown in Fig. 2. These monomers vary in volatility with the lower molecular weight members of this family having a rather high odor and low flash point. 

Acrylics (methyl methacrylates) - tend to be formulated such that they exhibit less shrinkage than conventional polyesters. However, they have low flash points and are therefore highly inflammable in their pure resin state. 

In spite of this impressive list of characteristics the use of reactive acrylic adhesives has been limited to selected high-performance adhesive markets. Their growth otherwise, has been less rapid than expected (10). One of the principal reasons is due to the toxicity characteristics associated with methyl methacrylate and methacrylic acid monomers, major formulation constituents of "second-generation" acrylic adhesives, with regard to inhalation, ingestion and skin contact. Compositions containing large quantities of these monomers have been rejected on certain production lines such as automotive assembly. The low flash point and resultant flammability hazard have also been important contributors to the restricted use of modified acrylic adhesives (9 and 11). 

Methyl Methacrylate — Rre Hazards Flash Point (deg. F) 50 OC Flammable Limits in Air (%) 2.1 -12.5 Fire Extinguishing Agents Foam, carbon dioxide, dry chemical Fire Extinguishing Agents Not To Be Used Water may be ineffective Special Hazards of Combustion... 

Ageflex FM-68 Ageflex FM-1620 A13-25418 EINECS 251-013-5 Methacrylio acid, octadecyi ester Methacrylic acid, stearyl ester Octadecyl methacrylate 2-Propenoic acid, 2-methyl-, octadecyl ester. Natural, C16-I8 methacrylates, with 100 ppm hydroquinone inhibitor lube oil additive, pour point depressant, paper coatings, textile finishes, paints, varnishes, pressure-sensitive adhesives. Lube oil additive, pour point depressant. Used in paper coatings, textile finishes, paints, varnishes, pressure-sensitive adhesives. Liquid bps = 181° d 8 = 0.868 f.p. -20° flash pt. 110°. Rit-Chem Rohm Haas Co. Sartomer. 

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