Grade

Magnesium Sulphate 

Heptahydrate

Magnesium Sulphate

monohydrate

Magnesium Sulphate 

anhydrous

MF

MgSO4·7H2O

MgSO4·H2O

MgSO4

Appearance

White Crystal

White power and granule

White powder and granule

Assay %min

99.5

99

98

MgSO4 %min

48.59

86

98

MgO %min

16.20

28.60

32.60

Mg %min

9.80

17.21

19.6

pH(5% Solution)

5.0-7.5

5.0-9.2

5.0-10.0

Heavy metal

(as Pb)%max

0.0006

0.0008

0.0008

Arsenic(As)%max

0.0002

0.0008

0.0008

Grade

Fertilizer grade, feed grade, food grade,industry grade, 

agriculture grade, USP grade

Size

0.1-0.5mm, 1-3mm, 2-4mm, 4-7mm