White Coloured Fumaric/ Trans-Butenedioic Acid is used to produce alexipharmic sodium dimmer captosuccinate and ferrous fumarate in pharmaceutical industry. Fumaric Acid can also be used as pharmaceutical intermediate and optical bleaching agent. Fumaric Acid is a white crystalline compound that falls into the category of two isomeric unsaturated dicarboxylic acids. White Coloured Fumaric/ Trans-Butenedioic Acid has a fruit-like taste and contains 99.50% to 100.5% w/w on dry basis.