Storage precautions: Store in a cool and ventilated warehouse. Keep away from kindling and heat source. It shall be stored separately from oxidants, acids and halogens and shall not be mixed. Fire fighting equipment of corresponding types and quantities shall be provided. The storage area shall be equipped with appropriate materials to contain the leakage.

Copper has the advantages of low resistivity, low electromigration rate, and low price. It is one of the ideal substitutes for the silver palladium internal electrode. However, its chemical properties are relatively active. In the air, powdered copper with large specific surface area is very easy to be oxidized, and the surface will form Cu2O and CuO films, which will rapidly reduce its conductivity, or even become non-conductive.