- Formation of protective layer of copper phosphide is also used in cases of phosphorus ingestion, when gastric lavage with copper sulfate is employed as part of the cure.
- Copper phosphide can be produced in a reverberatory furnace or in a crucible, e . g . by a reaction of red phosphorus with a copper-rich material.
- A blue-black film of copper phosphide forms on white phosphorus when subjected to a solution of copper salt; wounds containing particles of phosphorus therefore have to be washed with 1 % solution of copper sulfate.