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Magnesium sulfate heptahydrate

Magnesium sulfate heptahydrate

CAS  No :  10034-99-8  (MgSO4·7H2O)    
Molecular Formula:  MgSO4·7H2O    
Relative Molecular Mass:246.47  


Product performance


Magnesium sulfate heptahydrate, also known as sulfur bitter, bitter salt, Epsom salt, Epsom salt, is a magnesium-containing compound. In the air (drying), it is easy to be weathered into powder, and when heated, the crystal water is gradually removed to become anhydrous magnesium sulfate.


Quality index GB/T26568-2011


  项    目              project                     

  七水硫酸镁Magnesium sulfate heptahydrate

 

  (1) 外观Exterior

  无色或白色结晶,无结块Colorless or white crystals, no lumps

  (2) 水溶镁(以Mg计)的质量分数Mass fraction of water-soluble magnesium (as Mg) / %        ≥ 

  9.5

  (3) 水溶硫(以S计)  的质量分数 Mass fraction of water-soluble sulfur (calculated as S)/ %       ≥

  12.5

  (4) 氯离子(以Cl-计)的质量分数Mass fraction of chloride ions (as Cl-)/ %       ≤

  2.5

  (5) 游离水的质量分数Mass fraction of free water */%                 ≤

  6.0

  (6)水不溶物的质量分数The mass fraction of water insoluble matter/ %                ≤

  0.5

  (7) 粒度granularity(2.00mm—4.00mm)/ %           ≥

  —

  (8) PH值

  5.0~9.0

  注: 指标中的“—”表示该类别产品的技术要求中此项不作要求。Note: The "—" in the index indicates that this item is not required in the technical requirements of this category of products.

  * 游离水的质量分数以出厂检验为准   The mass fraction of free water is subject to the factory inspection


 Scope of application


In agriculture and horticulture, magnesium sulfate is used in soils that are deficient in magnesium (magnesium is one of the essential nutrients for crop growth and the core element of chlorophyll, which plays a very important role in the photosynthesis of plants, equivalent to vegetable greenhouses). The "artificial sun" in ) is usually used for potted plants or magnesium-deficient crops, such as tomatoes, potatoes, roses, etc. The advantage over other fertilizers is higher solubility.


Packaging and storage


Magnesium sulfate is packed in 25kg or 50kg bags, the inner layer is plastic film, and the outer layer is woven bag or determined according to user needs. The product is stored in a dry, ventilated and cool place indoors.


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