CAS Registry Number

CAS 108-31-6 — Maleic anhydride

Maleic anhydride is an organic compound belonging to the family of cyclic anhydrides, widely used in the production of unsaturated polyester resins, agricultural chemicals, and as a chemical intermediate in pharmaceuticals and coatings. It is also employed in the synthesis of 1,4-butanediol and as a food additive (E290) for acidification and as a dough strengthener. Maleic anhydride has a CAS number of 108-31-6, with the molecular formula C4H2O3 and a molecular weight of 98.057 g/mol. It is stored at ambient temperatures and classified with the signal word "Danger" due to its hazardous properties. Molekula supplies maleic anhydride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.