Magnesium sulphate heptahydrate (agri grade)
1, Properties: Molecular formula:MgSO4 7H2O, Molecular weight:246.48, white or colorless crystal, odorless.
2, Technical index
|
Appearance
|
White granular
|
|
Main content
|
 99.5%
|
|
MgSO4
|
48.59%
|
|
MgO
|
16.27%
|
|
Mg
|
9.81%
|
|
PH(5W/V%Sol)
|
5-8
|
|
Iron(Fe)
|
 0.002%
|
|
Cl
|
0.02%
|
|
Heavy metal (Pb)
|
0.001%
|
|
As
|
0.0002%
|
|
Insoluble in water
|
0.01%
|
|
Granular(mm)
|
0.1-1, 1-3, 2-4
|
3, Uses: there are no toxic matter, thus it is widely used in drug, fertilizer, leather, printing, dyeing, pigment, ceramic, explosive, match, fireproof material, magnesium salt and feed additive.
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