ITEM | INDEX | ||||
GL218 | GL216 | GL215 | |||
1 | ZnO | %≥ | 95.0 | 90 | 85 |
2 | 105ºC volatile | %≤ | 0.8 | 0.8 | 1 |
3 | Water soluble substance | %≤ | 1.5 | 1.5 | 1.8 |
4 | Burn reduction | %≤ | 4 | 4 | 6 |
5 | HCL insoluble matter | %≤ | 0.05 | 0.08 | 0.1 |
6 | Pb | %≤ | 0.002 | 0.002 | 0.002 |
7 | Cu | %≤ | 0.0005 | 0.0008 | 0.0008 |
8 | Mn | %≤ | 0.0050 | 0.006 | 0.006 |
9 | Cd | %≤ | 0.0008 | 0.0008 | 0.001 |
10 | As | %≤ | 0.0005 | 0.001 | 0.001 |
11 | BET surface area | 35min | 25±5 | 20±5 | |
12 | Sulfate | %≤ | 1.0 | 1.0 | 1.0 |
13 | The average particle size(nm) | %≤ | 100 | 200 | 200 |
14 | Color | standard | White or slightly yellow powder | White or slightly yellow powder | White or slightly yellow powder |