Oxalic Acid 1, Oxalic Acid 2, CAS No.: 144-62-7 3, HS Code: 29171110 4, Type: Oxalic acid 99.6%min Properties: Oxalic acid forms fine colourless crystals, readily soluble in water, with light nitrogen oxides-like odour. Application: 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.