Molecular Formula:
MgSO 4. 7H 2 O.
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 waterat 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.
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
|
|
