Sodium sulfate is an important raw material for making glass and paper. The dosage is the largest in papermaking and cellulose industry, accounting for about 70% of the total amount. Sodium sulfate is a component of synthetic detergent, which is a neutral salt. Adding it can reduce the surface tension and increase the solubility of detergent. It is also a diluent for dyes and an auxiliary agent for dyeing and printing. It is used as a dyeing accelerator for dyeing cotton fibers with direct dyes, sulfur dyes, vat dyes, etc., and as a retarding agent for dyeing silk with direct dyes. In the chemical industry, sodium sulfate is used as raw material for manufacturing sodium sulfide, gypsum, sodium silicate and other chemical products...