Medicine
External application of magnesium sulphate powder can reduce swelling. It is used to treat swelling after limb injuries and help improve rough skin. Magnesium sulphate is easily soluble in water and not absorbed when taken orally. Magnesium ions and sulfate ions in the aqueous solution are not easily absorbed by the intestinal wall, which increases the osmotic pressure in the intestine, and the water in the body fluid moves to the intestinal cavity, which increases the volume of the intestinal cavity. The intestinal wall expands, thereby stimulating the afferent nerve endings in the intestinal wall, which reflexively causes the increase in bowel motility and catharsis, which acts on all intestinal segments, so the effect is fast and strong. Used as a catharsis agent and duodenal drainage agent. Magnesium sulphate intravenous injection and intramuscular injection are mainly used for anticonvulsant. It can cause vasodilation and lower blood pressure. Due to the central inhibitory effect of magnesium sulfate, skeletal muscle relaxation and blood pressure reduction, it is mainly used clinically to relieve eclampsia and tetanus. Other convulsions are also used for the treatment of hypertensive crisis. It is also used to detoxify barium salt.

Food
Food grade magnesium sulphate is used as a magnesium supplement in food processing. Magnesium is an indispensable factor in the human body to participate in the process of bone formation and muscle contraction. It is an activator of many enzymes in the human body and plays an extremely important role in the body’s material metabolism and nerve function. If the human body lacks magnesium, it will cause material metabolism and neurological disorders, supply imbalance, affect human growth and development, and even lead to death.

Feed
Feed grade magnesium sulfate is used as a magnesium supplement in feed processing. Magnesium is an indispensable factor in the process of bone formation and muscle contraction in livestock and poultry. It is an activator of various enzymes in livestock and poultry. It plays an extremely important role in material metabolism and nerve function in livestock and poultry. If the body of livestock and poultry lacks magnesium, it will cause material metabolism and neurological disorders, supply imbalance, affect the growth and development of livestock and poultry, and even lead to death.

Industry
In chemical production, magnesium sulfate heptahydrate is used as a multi-purpose raw material for the production of other magnesium compounds. In the production of ABS and EPS, anhydrous magnesium sulphate is used as a polymer emulsion coagulant. In the production of man-made fibers, anhydrous magnesium sulfate is a component of the spinning bath. Magnesium sulphate heptahydrate is used as a stabilizer for peroxides and perborates, which are commonly used in detergents. Used to adjust viscosity in liquid detergents. In cellulose production, magnesium sulphate heptahydrate is used to increase the selectivity of oxygen bleaching delignification. It can improve the quality of cellulose and save the amount of chemicals used. Magnesium sulphate heptahydrate is used as a leather processing aid. Adding magnesium sulfate heptahydrate can make leather softer. Promote the adhesion of tanning agent and leather, increase the weight of leather. In pulp production, anhydrous magnesium sulfate is used to increase the selectivity of oxygen bleaching delignification, improve the quality of cellulose, and save the amount of chemicals used. In the chemical industry, anhydrous magnesium sulfate is widely used as a raw material for the production of other magnesium compounds. In the construction industry, anhydrous magnesium sulfate is a component of bitter soil cement. In the production of ABS and EPS, anhydrous magnesium sulfate is used as a polymer emulsion coagulant. In the production of man-made fibers, anhydrous magnesium sulfate is a component of the spinning bath. During the drying and sintering of magnesia refractories, anhydrous magnesium sulfate is used to stabilize the green body. In the production of magnesium silicate, anhydrous magnesium sulfate is used as a raw material. Anhydrous magnesium sulfate is used as a stabilizer for peroxide and perboride bleaching agents in detergents. Anhydrous magnesium sulfate is also used as a raw material for cosmetics.

Fertilizer
Magnesium fertilizer has the function of increasing crop yield and improving crop quality. Magnesium sulfate is the main variety of magnesium fertilizers. Magnesium sulfate contains two plant nutrients, magnesium and sulfur, which can significantly improve the yield and quality of crops. Magnesium sulfate is suitable for all crops and various soil conditions, with excellent application performance, wide range of uses, and large demand. Magnesium is an essential nutrient element for plants. Magnesium is a constituent element of chlorophyll, an activator of many enzymes, and is involved in protein synthesis. The symptoms of magnesium deficiency in crops first appear on the lower old leaves, with chlorosis between the veins, dark green spots appear at the base of the leaves, the leaves change from pale green to yellow or white, and brown or purple spots or stripes appear. Pasture, soybeans, peanuts, vegetables, rice, wheat, rye, potatoes, grapes, tobacco, sugar cane, sugar beets, oranges and other crops respond well to magnesium fertilizer. Magnesium fertilizer can be used as base fertilizer or top dressing. Generally, 13-15 kg of magnesium sulfate is applied per mu. The 1-2% magnesium sulfate solution is used for topdressing (foliar spraying) outside the roots for the best effect in the early stage of crop growth. Sulfur is an essential nutrient element for plants. Sulfur is a component of amino acids and many enzymes. It participates in the redox process in crops and is a component of many substances. The symptoms of crop sulphur deficiency are similar to those of nitrogen deficiency, but generally first appear on the top of the plant and on the young shoots, which are manifested as short plants, yellowing of the whole plant, and reddish veins or stems. Crops such as pasture, soybeans, peanuts, vegetables, rice, wheat, rye, potatoes, grapes, tobacco, sugar cane, sugar beets, and oranges respond well to sulfur fertilizers. Sulfur fertilizer can be used as base fertilizer or top dressing. Generally, 13-15 kg of magnesium sulfate is applied per mu. The 1-2% magnesium sulfate solution is used for topdressing (foliar spraying) outside the roots for the best effect in the early stage of crop growth.