Specification Content Item Qualification Result(%) Nondefective(%) Purity ≥99.5 99.61 sulpate ≤0.05 0.024 iron ≤0.0025 0.0005 Heavy metals ≤0.001 0.0003 loss on drying ≤0.1 0.038 Insoluble in the water ≤0.02 0.004 Look White crystalline substance Conclusion First Quality Application 1. Electroplating. 2. Cleaning oxidize surface of metal parts. 3. Slightly corrosive, used as boiler scale remover or disinfectant. 4. Bleacher for fibre, wood and paper. 5. Remove nitrite in tobacco. 6. Used as flame retardant for cotton fibre. 7. Used as curing agent for resin. 8. Intermediate of sodium cyclamate
water treatment,metal cleaning, cyclamate