Product Description
Molecular Formula: MgSO4·7H2O Molecular weight:246.48
--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 . Soluble in its own water at 67.5oC. Slightly soluble in ethanol and glycerin.
--Dcomposing is heatedup.Lossing 4 crystal water at 70-80oC.About at 200oC,lossing all of its crystal water becomes anhydrous compounds.

Product Specification/Models
MgSO4·7H2O: 99.5% min.
MgO: 16.24% min.
Mg: 9.80% min.
S: 12.8% min.
Cl: 0.014% max.
Fe: 15ppm max.
Pb: 6ppm max.
As: 1ppm
Water Insoluble: 0.01% max.


MgSO4·7H2O: 94% min.
MgO: 15.3% min.
Mg: 9.2% min.
S: 12.2% min.
Pb: 10ppm max.
NH4+: 1.5% max.
Water Insoluble: 0.1% max.

Application
--Mainly used in fertilizer, tanning, pringting and dyeing,activator,paper-making,plastic,porcelain,pigment matchmaking ,dynamite and fire-proof 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.