Potassium Nitrate 1. Product name: Potassium Nitrate 2. Standard: Industry 3. Purity: 99.8% 4. Usage: Industry materials Potassium NitrateIt is colorless crystal ... 42Water Insolubles,% ≤0.020.01Chloride(Cl),% ≤0.030.02Sulfate(SO4),% ≤0.010.005Water content,% ≤0.10.08K2O,% ≥4646.1N,% ≥13.513.51Clarity ... both of heat treatment, cigarette paper; concentrating age Potassium Nitrate