Fumaric acid (CAS No 110-17-8). A food acidulen and fumaric acid esters used to treat psoriasis.

Fumaric acid

IUPAC name: (E)-Butenedioic acidOther names: trans-1,2-Ethylenedicarboxylic acid,2-Butenedioic acid, trans-butenedioic acid, Allomaleic acid, Boletic acid, Donitic acid, Lichenic acid

Identifiers CAS number: 110-17-8ChemSpider: 10197150UNII: 88XHZ13131EC number 203-743-0 KEGG: C00122 N

Properties Molecular formula: C4H4O4 Molar mass: 116.07 g/mol Appearance: White solid Density: 1.635 g/cm³, solid Melting point: 287 °CSolubility in water: 0.63 g/100 mL Acidity (pKa): pka1 = 3.03, pka2 = 4.44

HazardsEU classification: Irritant (Xi)

ApplicationsFumaric acid is a food acidulen and fumaric acid esters are used to treat psoriasis.  Fumaric acid is also used in the manufacture of polyester resins and polyhydric alcohols and as a mordant for dyes.

Fumaric Acid