... the high quality Maleic Anhydride Flake/Briquette 2,purity:99.5% 3,60000MT/YEAR 4,packing: 25kg/bag, ... Extra Grade Measured ValueAppearanceWhite Briquette /FlakeWhite Briquette/FlakePurity% ≥99.599.57Molten color(APHA) ≤2020Solidifying point °C≥ ... Ltd. (Baotie) is dedicated to the production and sale of maleic anhydride, beta naphthol, bon acid. 2,locationOur ... 60,000 tonne/y.. Maleic anhydride 99.5%MIN