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Product name | Zinc carbonate basic | ||||||
Synonyms | Zinc carbonate hydroxide | ||||||
CAS NO. | 5970-47-8 | ||||||
Molecular formula | 2(ZnCO3).3(Zn(OH)2) | ||||||
Molecular weight | 548.96 | ||||||
HS code | 28369990 | ||||||
Test items | Unit | Superior grade | Qualified grade |
ZnO(dry basis) | % | ≥ 57.5 | ≥ 57.0 |
Ignition loss | % | 25.0~28.0 | 25.0~30.0 |
Heavy metal(as Pb) | % | ≤ 0.010 | ≤ 0.015 |
Moisture(105℃) | % | ≤ 2.5 | ≤ 3.5 |
Sulfate(as SO₄ ) | % | ≤ 0.6 | ≤ 0.8 |
Fineness (pass through 75um sieve) | % | ≥ 95.0 | ≥ 94.0 |
Cd | % | ≤ 0.010 | ≤ 0.020 |










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