1. The chemical industry is used to manufacture sodium sulfide sodium silicate water glass and other chemical products.

2. The paper industry is used as a cooking agent in the manufacture of kraft pulp.

3. Glass industry is used to replace soda ash as cosolvent.

4. The textile industry is used to prepare vinylon spinning coagulant.

5. Used in nonferrous metal metallurgy, leather, etc.

6. It is used to make sodium sulfide, paper pulp, glass, water glass, enamel, as well as a laxative and an antidote to barium salt poisoning. It is a by-product of making hydrochloric acid with salt and sulfuric acid. In chemical industry, it is used to manufacture sodium sulfide, sodium silicate, etc. The laboratory is used to wash away barium salts. In industry, it is used as raw material for preparing NaOH and H2SO4, as well as paper making, glass, printing and dyeing, synthetic fiber, leather making, etc. In the organic synthesis laboratory, sodium sulfate is the most commonly used post-treatment desiccant.

7. It is mainly used as the filler of synthetic detergent. The paper industry is used as a cooking agent in the manufacture of kraft pulp. Glass industry is used to replace soda ash. The chemical industry is used as raw material for manufacturing sodium sulfide, sodium silicate and other chemical products. The textile industry is used to prepare vinylon spinning coagulation bath. The pharmaceutical industry is used as a laxative. It is also used in nonferrous metallurgy, leather, etc.

8. The hydration product calcium sulphoaluminate is generated more quickly, thus speeding up the hydration and hardening of cement. The dosage of sodium sulfate is generally 0.5%~2% of the cement quality, which can improve the early strength of concrete by 50%~100%. The 28 day strength sometimes increases, sometimes decreases, and the increase range is about 10%, which varies with the cement type, curing conditions and the dosage. It is also used as the filler of synthetic detergent, as well as in paper industry, glass industry, chemical industry, textile industry and pharmaceutical industry.

9. It is used as an analytical reagent, such as a dehydrating agent, a digestion catalyst for nitrogen determination, and an interference inhibitor in atomic absorption spectrometry. It is also used in the pharmaceutical industry.

10. It is used in chemical industry, paper making, glass, dye, printing and dyeing, pharmaceutical industry, synthetic fiber, leather making, nonferrous metallurgy, enamel, etc. It is also used as an additive in detergents and soaps.

11. It can be used as a buffer in sulfate zinc plating to stabilize the pH value of the bath