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 67.5℃.Slightly soluble in ethanol and glycerin. 
--Dcomposing is heatedup.Lossing 4 crystal waterat 70-80℃.About at 200℃,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.

Packing:Knitting bags with plastic liners,25kg,40kg,50kg per bag. 
Storage :Stored in dry and cool place.Protection from sunshine,rain,moisture.

Technological index：