Magnesium sulfate heptahydrate, also known as sulfur bitter, bitter salt, Epsom salt, Epsom salt, chemical formula is MgSO4·7H2O), is a white or colorless needle-shaped or oblique columnar crystal, odorless, cool and slightly bitter. It decomposes when heated and gradually removes crystal water and becomes anhydrous magnesium sulfate. Mainly used in the manufacture of fertilizers, tanning, printing and dyeing, catalysts, papermaking, plastics, porcelain, pigments, matches, explosives and fireproof materials. It can be used for printing and dyeing thin cotton cloth and silk, as a weighting agent for cotton silk and as a filler for kapok products. , used medicinally as Epsom salt
1. Food
As food fortifier. Our country stipulates that it can be used in dairy products, the usage amount is 3~7g/kg; the usage amount in drinking liquids and milk drinks is 1.4~2.8g/kg; the maximum usage amount in mineral drinks is 0.05g/kg.
2.Industrial
It is mostly used in sake brewing water with calcium salt. Adding 4.4g/100l water can increase the hardness by 1 degree. If used more often, it will produce a bitter taste and the smell of hydrogen sulfide.
Used as tannery, explosives, papermaking, porcelain, fertilizer, as well as medical oral laxatives, mineral water additives, etc.
3. Agriculture
Magnesium sulfate is used in agriculture as a fertilizer because magnesium is one of the main components of chlorophyll. It is usually used for potted plants or crops that are deficient in magnesium, such as tomatoes, potatoes, roses, etc. The advantage of magnesium sulfate over other fertilizers is its higher solubility. Magnesium sulfate is also used as bath salts.