| 分子式 | |
| 其他事项 | 4.120050Zinc sulfate heptahydrate ACS, ISO, Reag. Ph EurZnSO47H2O M.=287.54 CAS No. 7446-20-0UN 3077 Assay(Complexometric) ≥ 99.0%Identity p/tClarity of solution p/tInsoluble matter ≤ 0.01%pH value (5% in H2O, 25 °C) 4.4 ~ 5.6Chloride (Cl) ≤ 0.0005%Total nitrogen (N) ≤ 0.0005%Nitrate (NO3) ≤ 0.002%Ammonium (NH4) ≤ 0.001%As ≤ 0.0005% Ca ≤ 0.001%Cd ≤ 0.0005% Cu ≤ 0.0005%Fe ≤ 0.0005% K ≤ 0.001%Mg ≤ 0.001% Mn ≤ 0.0003%Na ≤ 0.001% Pb ≤ 0.001%Corresponds to ACS, ISO, Reag.Ph Eur p/t |
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