1.Characteristics: Magnesium sulfate, another name, sulfate bitter, bitter salt, epsomite, Epsom salt,molecular formula MgSO4•7H2O, relative molecular weight 246.47. Feature in white or colorless crystal, odorless, cool, little bitter, dissolve in water easily 2. Application (1) agriculture as a fertilizer. (2) for feed additives. (3) for the catharsis of its saturated solution deposited topical Um, there are anti-inflammatory, reduces swelling, detoxification, analgesic effect, and has inhibited the central nervous system, anti-grazing exert antispasmodic role. (4) for printing thin cotton for cotton, silk increasing agent, kapok packing products; (5) for the system of grass, fertilizer, ceramics, paint, matches, explosives and fire prevention materials; (6) micro-industry for medium ingredients, brewing with additives to supplement the water brewing magnesium, a nutrient source for fermentation; (7) tanning industry, as filler to enhance heat resistance; (8) for the production of light in the fresh yeast, monosodium glutamate and for the production of calcium hydrogen phosphate toothpaste stabilizer; (9) cement coagulant; (10) pulp and paper industry, artificial silk and silk industries are also used; (11) containing a small amount of crystal water or without crystal water can be used for water content can not be too high, the product synthesis and mixing ingredients for organic chemicals can be used for drying and dehydrating agent for dyeing fine thin cotton cloth, silk, cotton yar increased as the agent and kapok filler products. Magnesium Sulphate Heptahydate (99.5%)Molecular Formula: MgSO4.7H2OHS Code: 28332100 C A S: 10034-99-8 Magnesium sulfate heptahydrate (Feed Grade):AppearanceWhite crystalMain content99.5% minMgSO448.59% minMgO16.24% minMg9.8% minPH(5W/V%Sol)5-9Ferron(Fe)0.001% max Chloride(Cl)0.014%maxHeavy metal (Pb)0.0008%maxArsenic(As)0.0002% maxInsoluble0.001%maxSize (mm)0.1-1 0.2-3 1-4