Item | index | |
Ⅰ | Ⅱ | |
（ZnO）w/% ≥ | 99.0 | 97 |
（Pb）w/% ≤ | 0.001 | 0.001 |
（Mn）w/% ≤ | 0.001 | 0.001 |
（Cu）w/% ≤ | 0.0005 | 0.0005 |
（Cd）w/% ≤ | 0.0015 | 0.005 |
（Hg）w/% ≤ | 0.0001 | — |
（As）w/% ≤ | 0.0003 | — |
105℃volatile matterw/% ≤ | 0.5 | 0.5 |
Hydrotrope w/% ≤ | 0.10 | 0.10 |
Insoluble matter in hydrochloric acid w/% ≤ | 0.02 | 0.02 |
Loss on ignitionw/% ≤ | — | 2 |
Mean grain size μm ≤ | 1 | 1 |
Specific surface aream2/g ≥ | 15 | 15 |