Magnesium chloride hexahydrate, also known as halogen tablets, has the chemical formula MgCl2 · 6H2O, and the molecular weight is 203.3. Colorless crystals. Soluble in water and ethanol, and deliquescent when the humidity is high. Decomposition by hot melt at 116 ~ 118 ℃. When mixed with magnesium oxide and water, it becomes magnesium cement. Reacts with hydroxides of alkali or alkaline earth metals. There are multiple classifications of magnesium chloride, which can be divided into ordinary tablets and white tablets according to quality. Ordinary tablets are divided into clear tablets, through tablets and salt tablets; according to their uses, they can be divided into industrial-grade magnesium chloride and food-grade magnesium chloride; according to their content, they can be divided into: magnesium chloride hexahydrate and anhydrous magnesium chloride.
Magnesium chloride has a very important role in various industries:
1. Magnesium chloride can be used in the metallurgical industry and is a raw material for the manufacture and smelting of magnesium metal.
2. In the chemical industry, magnesium chloride can be used as a magnesium salt, such as magnesium oxide, magnesium hydroxide, etc. It can also be used as an antifreeze in the construction industry.
3. In the construction industry, magnesium chloride can be made of artificial marble, floor, ceiling, fire board, and it can also be used as a greenhouse support in agriculture to support the greenhouse.
4. In the transportation industry, magnesium chloride can be used as a snow melting agent. When the road is frozen in winter, it can be sprayed with snow melting agent to melt snow.
5. In agriculture, magnesium chloride can be used as magnesium fertilizer, and the plants to which magnesium fertilizer is applied will flourish and grow.