What does MAN, MA stand for?

Maleic Anhydride

Maleic anhydride has traditionally been produced by the oxidation of benzene, but more recently, n-butane has replaced benzene as the main feedstock. Maleic anhydride is a versatile molecule that lends itself to many applications requiring multi-functionality. The main applications for refined Maleic anhydride are unsaturated polyester resins and fine chemicals (alkenyl succinic anhydrides, fumaric acid, polyaspartic acid).