Item%

Index(%)

Excellent

First-class

Comforming

Quality Index Rate Of Reduction(Cu2O)

≥98.0

≥97.0

______

Content of metal copper(Cu)

≤1.0

≤2.0

≤3.0

Content of copper(Cu2O)

≥97.0

≥96.0

≥95.0

Content of copper(Cu)

≥87.0

≥86.0

______

Content of chloride(Cl)

≤0.5

≤0.5

______

Content of sulfate(SO4)

≤0.5

≤0.5

______

Content of water

≤0.5

≤0.5

≤0.5

Dissolved in acetone

≤0.5

______

______

Reduction after steady test

≤2.0

≤2.0

______

Residue(45μm)

≤0.3

≤0.5

≤1.0

Riddling 75μm of nitric acid

≤0.1

______

______

Content of non metal copper

≤0.5

______

______