Guaranteed specifications: | |||
Appearance | Off-White Powder | Light Yellow Powder | Yellow Powder |
Al2O3 | 30-31% | 30-31% | 28-31% |
Basicity | 40-50% | 50-80% | 60-95% |
Water insoluble materials | 0.3% max | 0.3% max | 1.0% max |
PH value | 3.5-5.0 | 3.5-5.0 | 3.5-5.0 |
Pb | 30ppm max | 30ppm max | 30ppm max |
As | 6ppm max | 6ppm max | 6ppm max |
Cd | 6ppm max | 6ppm max | 6ppm max |
Cr+6 | 15ppm max | 15ppm max | 15ppm max |
Hg | 0.3ppm max | 0.3ppm max | 0.3ppm max |