Item |
Drinking Water Grade (White Powder) |
Industry Grade (Yellow Powder) |
Standard |
GB15892-2009 |
GB22627-2008 |
Al2O3 |
29% Min |
28% Min |
Alkalinity |
40-90% |
30-95% |
Water insoluble |
0.6% Max |
1.5% Max |
PH (1% water solution) |
3.5-5.0 |
3.5-5.0 |
Fe |
- |
5.0% Max |
As |
0.0002% Max |
0.0015 Max |
Pb |
0.001% Max |
0.006 Max |
Cd |
0.0002% Max |
- |
Hg |
0.00001% Max |
- |
Cr+6 |
0.0005% Max |
- |