Constituents

High Grade

Low Grade

Combined water

19.50 min.

18.90 min.

CaSO4  2H2O

93.00 min.

90.40 min.

CaO

30.5  :   33

30.5  :  33

SO3

43.5  :  46

43.5  :  46

MgO

0.10 max.

0.10  max.

SiO2 + IR

1.00 max.

1.50 max.

Al2O3 + Fe2O3

0.25 max.

0.25 max.

Cl

0.008 max.

0.01 max.

Whiteness

95% min.

95% min.

Size: Run of mine or crushed 0 to 40 cm max.
or crushed according to customer requirements

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