Palm's Cadmium Oxide Powder contains 87.5 % cadmium metal. COP is an inorganic compound used in the surface finishing, catalyst, ceramic, pigment, battery and other industrial applications. Safety precautions should be taken when handling Cadmium Oxide Powder. Always keep container in a cool dry location with the lid tightly sealed. COP is manufactured to demanding specifications that are subjected to stringent quality standards and testing measures.