| Drinking water grade | |
| Appearance | White powder |
| Water solution color by visual | Clear colorless |
| Aluminium Oxide as Al2O3 by wt % | 30 min. |
| Basicity by % | 40-60 |
| pH value (1% soln.) | 3.5-5.0 |
| Water insoluble by wt % | 0.3 max. |
| Heavy metals as Pb by wt % | 0.0005 max. |
| Arsenic as As by wt % | 0.0003 max. |
| Cadimium as Cd by wt % | 0.0008 max. |
| Mercury as Hg by wt % | 0.00001 max. |
| Hexavalent chromium as Cr + 6 by wt % | 0.005 max. |