Properties: Oxalic acid forms fine colourless crystals, readily soluble in water, with light nitrogen oxides-like odour. Oxalic acid dihydrate begins to dissociate at temperature over 30 0C. If heated quickly, it melts at 101.5 0C, anhydrous oxalic acid melts at 180 0C. Applications: Purifying agent in pharmaceutical industry, special in antibiotic medication, such as Oxytetracycline , Chloramphenicol , etc; Precipitating agent in Rare-earth mineral processing; Bleaching agent in the textile activities, wood pulp bleaching; Rust-remover for Metal treatment; Grinding agent, such as Marble polishing; Waste water treatment, removing calcium from water. Packing: 25/50 kgs grey colour PP bag of top grade linerfilm, good properties of waterproof and avoid water, solarization; Items Spec TOTAL ACIDITY % 99.6 ASH % 0.1 IRON 0.02 LOSS ON IGNITION % 0.08 SULFATE% 0.1 CHLORIDE ppm 20 HEAVY METAL ppm 10