Sodium sulphate anhydous rochloric acid by-product. Chemical used in the manufacture of sodium sulfide, sodium silicate. Laboratory used to wash the barium salt. Industry used to making caustic soda and sulfuric acid , also used for paper, glass, printing and dyeing, synthetic fibers, leather etc.. In organic synthesis in the laboratory of sodium sulfate is one of the most commonly used after processing desiccant. Fe% ¡¨¹0.002% 0.002% Insoluble solid in water% ¡¨¹0.05% Mg% ¡¨¹0.10% Cl% ¡¨¹0.35% Moisture% ¡¨¹0.10% Whiteness 80 Sodium sulphate anhydrous 99%min