|
ltem
|
Standard of analysis
|
|
Appearance
|
White powder
|
|
Active matter (%)
|
≥95
|
|
Petrolum ether soluble substances (%)
|
≤1.2
|
|
Na2SO4(%)
|
|
|
NaCL(%)
|
|
|
Water(%)
|
≤2.0
|
|
PH Value
(1% aq solution) |
8-9.5
|
|
Whiteness(Wb)
|
≥90
|