content（Cu）% | 52.5-56.5 |
chloride（Cl）% ，≤ | 0.005 |
sulfate（SO4）% ，≤ | 0.02 |
ammonium salt（NH4）% ，≤ | 0.2 |
（Fe）% , ≤ | 0.05 |
nitrate（NO3）% ，≤ | 0.05 |
acid non-soluble substance % ，≤ | 0.02 |
Non-sludging to ammonium sulfide | 1.0 |
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