fumaric acid

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fumaric acid has a fruit acid taste , maninly used as a raw material for polyester resins and alkyd resins , manufacturing synthetic resin posses a excellent thermal stability and insulation , polymerization of vinyl acetate and produces ahhesives , can also be used for pharmaceutrical raw material and food additives acidulant , beverage and other sourness agents and it is also an important raw material or glass fiber reinforced plastic and food industry .

description white, odorless granules or crystalline powder. it is soluble in alcohol, slightly soluble in water and in ether, and very slightly soluble in chloroform
chemical name trans-butenedioic  acid
molecular formula c4h4o4
structural formula  
molecular weight 116.07
solubility (g/100g)
in water at 25 0.7
in water at 100 9.8
in alcohol at 30 5.76
in dimethyl benzene at 20 0.03
specification
(fcciv,1996) assay(as c4h4o4) 99.5%~100.5%(anhydrous basis)
melting point 294oc~300oc
arsenic(as as) 3mg/kg max
heavy metals(as pb) 10mg/kg max
maleic acid 0.10% max
residue on ignition 0.1% max
water 0.5% max

110-17-8