Manganese sulphate is a light pink monoclinic fine crystal at room temperature. Soluble in water, insoluble in ethanol. When heated to above 200℃, it begins to lose crystal water. Most of the crystal water is lost at about 280℃. It becomes anhydrous salt melt at 700℃, and it begins to decompose at 850℃, releasing sulfur trioxide, sulfur dioxide or oxygen. Manganese is an element of Group VII of the Periodic Table of Elements. No free manganese is found in nature, and it usually exists in animals and plants in the form of compounds. After Orent and Kemmer discovered that manganese is an essential trace element for animals, a large number of studies have shown that manganese plays an important nutritional role in animals. It is an important part of arginine kinase, proline peptidase Chemicalbook and pyruvate finishing enzyme. Manganese ion can also activate many enzymes, and it is part of hydrolase and slope-removing enzyme. Activator of phosphorylase, nuclease, etc. Manganese can promote growth, enhance immunity and improve animal reproductive performance. Manganese sulfate is one of the important trace element fertilizers, which can be used as base fertilizer. Seed soaking, dressing, topdressing and foliar spraying can promote crop growth and increase yield. In animal husbandry and feed industry, it can be used as feed additive to make livestock and poultry develop well and have fattening effect. It is also a drier for processing paint and ink; Raw materials of manganese tea acid solution; Used as a catalyst in the synthesis of fatty acids; In addition, it can also be used in papermaking, ceramics, printing and dyeing, ore flotation; Raw materials for electrolytic production of manganese and raw materials for making other manganese salts.