Product name: Sodium Sulphate Anhydrous, Molecular formula : Na2SO4 Purity: 99% 98% 97% 96% Uses: Used ... as filler of detergent, making of sodium sulphide, water glass, or used in papermaking, glass, dye and used as filler, dyeing auxiliary ... , laxative, antidote, also can be used in fiber, leather, metallurgy, enamel and soap. sodium sulphate anhydrous