Chemical industry uses this salt as a versatile raw material for the production of other magnesium compounds. This salt is used as a coagulant in ABS-/ EPS-production via emulsion polymerisation. In rayon production it is used as an ingredient in spinning baths.

This salt is applied as a stabilising agent for bleaching products such as peroxides and perborates, which are commonly used in detergents. In liquid detergents i.e. dishwashing agents, the product is used for adjusting viscosity. In cellulose production, the salt is used to increase selectivity in oxygen delignification, as well as in peroxide and oxygen supported bleaching stages. Magnesium sulphate raises cellulose quality and helps to save process chemicals. The salt is used as a processing aid in leather production. The addition of the salt results in more supple leather, promotes bonding of the tanning agents with the skin substance and raises