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Quality indicators of nickel oxide
| Chemical composition of nickel oxide | % | % |
| Product Name | NiO-765 | NiO-770 |
| 镍（Ni） | ≥76.5 | ≥77 |
| 铜（Cu) | ≤0.05 | ≤0.01 |
| 锌（Zn) | ≤0.05 | ≤0.005 |
| 铁（Fe） | ≤0.1 | ≤0.05 |
| 钴（Co） | ≤0.15 | ≤0.05 |
| 硫（S） | ≤0.03 | ≤0.01 |
| Calcium, magnesium, and sodium content | ≤1.0 | ≤0.5 |
| Insoluble substances in hydrochloric acid | ≤0.2 | ≤0.1 |
| 0.154mm sieve residue | ≤0.02 | ≤0.02 |