Product Description
Magnesium sulfate heptahydrate, also known as sulfuric acid, bitter salt, cathartic salt, and laxative salt (chemical formula: MgSO47H2O), is a white or colorless needle-like or oblique columnar crystal, odorless, cool, and slightly bitter. It decomposes upon heating, gradually losing its crystal water to become anhydrous magnesium sulfate. It is mainly used in the manufacture of fertilizers, leather, printing and dyeing, catalysts, paper, plastics, porcelain, pigments, matches, explosives, and fireproof materials. It can be used to print and dye thin cotton and silk fabrics, as a weighting agent for cotton and silk, and as a filler for kapok products. In medicine, it is used as a laxative salt.
CAS 10034-99-8
Main Purpose
Food
As a food fortifier, it is stipulated in China that it can be used in dairy products with a usage level of 3-7g/kg; in beverages and milk drinks, the usage level is 1.4-2.8g/kg; and in mineral beverages, the maximum usage level is 0.05g/kg.
Industry
When combined with calcium salts for use in yeast water, adding 4.4g per 100l of water can increase the hardness by 1 degree. However, excessive use can lead to a bitter taste and the production of hydrogen sulfide odor.
It is used in leather making, explosives, paper making, porcelain production, fertilizer, and as an oral laxative in medical treatment, as well as a mineral water additive.
Agriculture
Magnesium sulfate is used as a fertilizer in agriculture, as magnesium is one of the main components of chlorophyll. It is commonly applied to potted plants or crops that are deficient in magnesium, such as tomatoes, potatoes, roses, and so on. The advantage of magnesium sulfate over other fertilizers is its higher solubility. Additionally, magnesium sulfate is also used as bath salts.
