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Gypsum - Test Report -Chemical Gypsum

 

Test Report of Chemical Gypsum (On dry basis):

Parameter

Analysis % (w/w)

Free Moisture

16.2

Purity as CaSO4.2H2O

95.5

Silica & insoluble

1.8

Iron as Fe2O3

0.03

Aluminum as Al2O3

0.18

Calcium as CaO

31.0

Magnesium as MgO

0.03

Sodium as Na2O

0.27

Potassium as K2O

0.02

Total P2O5

0.90

W.S. P2O5

0.25

Sulphate as SO4

54.2

Fluoride compounds as F

0.88

Chloride as Cl

0.0006

pH of 5% solution

3.85

Bulk density gms/cc

1.15

Lead as Pb

0.0064

Calcium as Cd

0.0003

Nickel as Ni

0.0041

Chromium as Cr

0.0038

Mercury as Hg

Traces

Arsenic as As2O3

0.0005