... Melting point for 851 ° C,Soluble in water 2. Specification(light) ItemsUnit ExcellentFirst classQualifiedNa2CO3 ≥%99.2098.8098.00NaCl ≤% ... glass production widely used in building material, chemical, light industry, metallurgy, medicine, food processing and people's ... consumption consist of glass industry (42%), chemical industry (12%), light industry (12%), civil industry (7%), metallurgy industry (5 ...