| 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 . 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.
Use:
--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.
Packing, Storage and Transportation:Knitting
bags with plastic liners,25kg,40kg,50kg per bag.
Stored in dry and cool place.Protection from sunshine,rain,moisture.
Technological index
name of index
|
first class |
up to standard |
( MgSO4.7H2O)%
|
≥98.0
|
≥95.0
|
iron (Fe)%
|
≤
0.005 |
≤
0.01 |
(as Cl)chloride%
|
≤
0.30 |
≤0.50
|
insoluble in
water% |
≤0.10
|
≤0.15
|
|
