CUPROUS OXIDE POWDER AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide a cuprous oxide powder in which the contents of carbon and chlorine are low and which is constituted of fine particles, and to provide a method for producing the same. SOLUTION: In the method for producing the cuprous oxide powder, comprising adding an alkali solution and a reducing agent solution to an aqueous solution containing divalent copper ion to reduce and precipitate cuprous copper oxide particles, an alkali solution containing no carbon and no chlorine is used as the alkali solution and the solution of a reducing agent containing no carbon and no chlorine is used as the reducing agent solution. Thereby, a cuprous oxide powder having a 50% particle diameter of 0.05-1.0 μm, a carbon content of ≤0.1 mass%, a chlorine content of