Preparation of copper pyrophosphate

Copper pyrophosphate is an important raw material for copper plating. Its early preparation method is obtained by double decomposition of copper sulfate and sodium pyrophosphate, but there will be a problem. Sulfate is easy to corrode metals and affect the quality of copper plating. Therefore, many copper plating manufacturers have very high requirements for the content of heavy metals and sulfates in copper pyrophosphate; Some factories will use copper as raw material, which is prepared by double decomposition of copper chloride and sodium pyrophosphate, which can solve this problem. However, the control of heavy metals such as iron and lead still needs strict control and technological innovation. So the principle of different manufacturers will be similar, but the production process is very different.