Item |
Tech grade |
Food grade |
Appearance |
White powder |
|
Purity |
99% Min |
99% Min |
Moisture |
0.5% Max |
----- |
Ph value |
8.8 Max |
----- |
Iron |
0.002% Max |
0.001% Max |
Heavy metal (as Pb) |
5ppm Max |
5ppm Max |
Chloride (as KCl) |
---- |
0.01% Max |
Suphide (as K2SO4) : |
---- |
0.01% Max |
Insoluble matter in water |
---- |
0.02% Max |
Arsenic (as As) |
---- |
3ppm Max |