Magnesium sulfate, or seven water magnesium sulfate, also known as sulfur bitter, bitter salt, epsomite, Epsom salt, it is a kind of magnesium compounds. Seven water magnesium sulfate in the air (dry) for easy weathering powder, heating gradually remove water of crystallization into anhydrous magnesium sulfate, molecular formula for MgSO4 (or MgSO4 · 7 h2o), magnesium sulfate is a kind of chemical raw materials. Anhydrous magnesium sulfate is a kind of commonly used chemical reagent and dry reagent. But magnesium sulfate often referred to as the seven water magnesium sulfate, because it is not easy to dissolve, than anhydrous magnesium sulfate are more likely to weigh, facilitate in the industrial of quantitative control.
Magnesium sulfate used for the leather making, the blasting explosive, papermaking, porcelain, fertilizer, and medical treatment on oral laxatives, etc. Mineral water additive. Magnesium sulfate in agriculture is used to a kind of fertilizer, because magnesium is one of the major components of chlorophyll. Usually be used to plant or lack of magnesium crops, such as tomatoes, potatoes, rose, etc. Compared to other advantages of magnesium sulfate fertilizer is higher solubility. Magnesium sulfate is also used as a bath salt.
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Seven water magnesium sulfate large particles ( 99.5%) mainly used in the pharmaceutical industry, light industry, microbial, chemical industry, printing and dyeing industry, pharmaceutical industry, electroplating industry, smelting industry. Are used as fertilizers in agriculture; can be used as feed additives, cement the combustion-supporting agent; used in explosives, match, porcelain, glass, paint, ABS resin production; in fireproof materials for acrylic resin plastics flame retardants; in the environmental protection for sewage treatment. Seven water magnesium sulfate in light industry for the production of fresh yeast, monosodium glutamate, drinks, mineral water; in the chemical industry for the manufacture of magnesium stearate, magnesium hydrogen phosphate, magnesium oxide and other magnesium salt and potassium sulfate, sodium sulfate and other sulfate; in fireproof material as a filler reinforced heat resistance; in pharmacy magnesium sulfate processing as a laxative, anticonvulsants, three magnesium silicate, meleumycin, acetyl spiramycin and muscle of drugs. In the fertilizer industry, used in the manufacture of magnesium fertilizer, on the growth of plants play an important role. In the food industry of magnesium sulfate for lactic acid, monosodium glutamate. In leather industry is used as a bulking agent in electroplating industry; as a conductive salt; in dyeing and printing can be used as a fabric dye, weighting agent, magnesium agent. In addition to industrial wastewater treatment, the wastewater sewage to coagulation and sedimentation to reach the discharge standards.

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