Maleic Anhydride (cis-Butenedoic Anhydride)
Molecule Formula: C4H2O3
CAS No.:108-31-6
UN No.: 2215

Maleic anhydride is an important organic chemical raw material used mainly for synthesizing unsaturated polyester resins, coatings, pharmaceutics, pesticides, lubricating-oil additives, foodstuff additives, etc. It is a white needle-like or flaky crystalline with irritant odour and sour, inflammable and
sublimable. It can be easy dissolved in water to form maleic acid.

Quality Standards GB3676-92
Items Exellent Product First-grade Product Satisfactory Productmolten colority, No.(plantinum-cobalt)max 20 50 100content(as MA)% min 99.5 99.0 98.5crystallizing point
Celsius system min 52.4 52.0 51.5
ash % max 0.003 0.005 -
iron content (as Fe)PPM max 5 - -

Packing and Storage: With plastical woven lined with double-layer of PE bag.