Magnesium Sulfate Molecular Formula: MgSO4¡¤7H2O. Molecular weight:246.48. Characteristics: --White exiguous acicular or oblique-pillar crystal. Smell-less,tast-bitter.Easily efflorescent at dry air. --Speciific gravity is 1.68. --Freely soluble in water . Solublein its own water at 67.5oC.Slightly soluble in ethanol and glycerin. --Dcomposing is heatedup.Lossing 4 crystal waterat 70-80oC.About at 200oC,lossing all of its crystal water becomes anhydrous compounds. Use: --Mainly used in fertilizer, tanning, pringting and dyeing,activator,papermaking,plastic,porcelain,pigment matchmaking ,dynamite and fireproof materials making . --Can used in pringting and dyeing delaine as the aggravating reagent of calico or silk,and as filling up of wooden-cotton products.Be used as Epsom salts at medicine. Technological index : Name of index first class up to standard ( MgSO4.7H2O)% ¡Ý99.5 ¡Ý98.0 iron (Fe)% ¡Ü 0.005 ¡Ü 0.01 (as Cl)chloride% ¡Ü 0.15 ¡Ü0.15 insoluble in water% ¡Ü0.1 ¡Ü0.1.
