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Fumaric acid(FA)

molecular formula; C4H404
Applications: Mainly used to produce polyester resin and alkyd; polymerized with styrene to the material of epoxy resin, polymerized with vinyl acetate to the good bond used in high grade oil paint, dye and paper sizing. This product is nontoxic. It is used as seasoning of alcohol and beverage when its quality grade is eatable grade.
Characteristics: white crystal grain. Having fruit sour smell, combustible, specific gravity in air: 1.635 (20/4℃),melting point: 286-287℃;sublimating at 290℃; non-dissolvable in chloroform and benzene, losed water to produce malcic anhydride when heated until 300℃.