Product: Oxalic Acid Specifications: Item Standard Total Acidity % 99.6 Min Ash % 0.1 Max Iron % 0.02 Max Loss on ignition % 0.08 Max Sulfate % 0.1 Max Chloride 20ppm Max Heavy metal 10ppm Max Usage: Purifying agent in pharmaceutical industry, Precipitating agent in Rare earth mineral processing; Bleaching agent in the textile activities, wood pulp bleaching; Rust remover for Metal, treatment; Grinding agent, Waste water treatment, etc.