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Magnesium sulfate heptahydrate

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Magnesium sulfate heptahydrate

  • Taxonomy:Magnesium sulfate heptahydrate

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  • Date of release:2019/05/10
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Magnesium sulphate of seven water: the common name is sulfur bitter, bitter salt, Epsom salt, which is colorless, fine needle or oblique column crystal, odorless, bitter taste, chemical formula MgSO4·7H2O. Soluble in water, slightly soluble in ethanol and glycerol. It does not weathering in normal temperature air, but in dry and high temperature air, part of the crystallized water can be lost. Magnesium sulfate is widely used in the printing and dyeing industry as a weighting agent for cotton and silk and a filler for kapok products. Used for the manufacture of porcelain, pigments and fireproof materials; Used medically as a laxative; laxative. Microbiological industry as medium composition; Additives for brewing; Used as a fertilizer graft in agriculture. Water magnesium.
Physicochemical properties
48.1 ℃ below the moist air in the stable, easy weathering in a warm, dry air, above 48.1 ° C, lose a water of crystallization, become six water magnesium sulfate, at 67.5 ° C, soluble in water of crystallization itself, at the same time of magnesium sulfate monohydrate, during 70 ~ 80 ℃, lose four water of crystallization, at 100 ° C to lose five crystallization water, lose 6 crystallization water at 150 ° C, lose all crystallization water at 200 ° C, be powdered anhydrous magnesium sulfate, dehydration objects placed in damp to able to absorb the moisture in the air. In saturated solution of magnesium sulfate, can crystallize respectively with 1, 2, 3, 4, 5, 6, 12 water hydration crystal, saturated aqueous solution at 3.9 ~ 1.8 ° C, twelve water magnesium sulfate precipitation, saturated aqueous solution at 1.8 ~ 48.18 ° C, seven water magnesium sulfate precipitation, saturated aqueous solution at 48.1 ~ 67.5 ° C, and six water magnesium sulfate precipitation, precipitation is higher than 67.5 ° C magnesium sulfate monohydrate, six water magnesium sulfate in occur between 87 ~ 92 ° C yuan for melting, and generate five water or magnesium sulfate tetrahydrate, sulfate tetrahydrate connect into sanshui magnesium sulfate under 106 ° C, Sanshui magnesium sulfate in 122 ~ 124 ° C under the two water magnesium sulfate, the second water magnesium sulfate under 161 ~ 169 ° C is converted into stability of magnesium sulfate monohydrate. Poisonous. The PH is neutral.
The main purpose
◆ In food, as a food fortifier. Chinese regulations can be used for dairy products, the use of 3~7g/kg; The usage of liquid and milk drinks is 1.4~2.8g/kg; The maximum dosage of mineral beverage was 0.05g/kg.
◆ On the industry, more and calcium salt combined for wine mother water, according to 4.4g/1001 water added can improve the hardness of 1 degree, multi-purpose bitter taste, and produce hydrogen sulfide odor. Used as leather, explosives, paper, porcelain, fertilizer, as well as oral laxatives on medical treatment, mineral water additives.
◆ In agriculture, magnesium sulfate is used as a fertilizer in agriculture because magnesium is one of the main components of chlorophyll. It is usually used for potted plants or crops that lack grafts, such as tomatoes, potatoes, roses, etc. Magnesium sulfate has the advantage of higher solubility than other fertilizers. Magnesium sulfate is also used as bath salt.
◆ In medicine, magnesium sulfate can be processed laxatives, anticonvulsants, magnesium trisilicate, eramycin, acetylspiramycin and other drugs. The deficiency of magnesium ions is related to a number of systemic diseases. As the most important drug to supplement magnesium hyperon, magnesium sulfate has been widely used in clinical practice.

Magnesium sulfate index of heptahydrate

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