|
ITEM
|
STANDARD
|
|
|
sodium sulphate %(Na2SO4)
|
99.0 MIN.
|
99.0 MIN.
|
|
water insolubles %
|
0.05 MAX.
|
0.05 MAX.
|
|
Ca + Mg (as Mg) %
|
0.15 MAX.
|
0.15 MAX.
|
|
chlorides %(Cl)
|
0.35 MAX.
|
0.35 MAX.
|
|
iron %(Fe)
|
0.002 MAX.
|
0.002 MAX.
|
|
moisture %
|
0.20 MAX.
|
0.20 MAX.
|
|
whiteness %
|
82 MIN.
|
82 MIN.
|
|
PH-value
|
6-8
|
9-11
|
|
Partickle size: Passed through on 100 mesh
|
around 60-65%
|
not required
|
