Soda ash (light and dense) Purity: 99.2% minimum Color: white Na2CO3: ≥99% NaCl: ≤0.90% Fe: ≤0.006% Water insoluble matter: ≤0.10% Standard: GB210.1-2004 Widely used in industries such as synthetic detergents, vinylon, dye and dyeing, glass, pharmaceuticals, leather and rubber