Copper Oxide (Cu2O) is a very common metal, and generally not toxic. Copper Oxide is used in the production of steel, tin, and other metals. Copper Oxide can be found in the following forms: Pure, Metal, Oxide, and Hydroxide. It is also found in Secondary Forms and Tertiary Forms. Copper Oxide is also a catalyst. Cu2O is an ingredient in Pure Copper and Other Copper Compounds.

While the chemical industry is mostly based around the world's most popular and important raw materials, the world of chemicals is a little less well-known. Because it is so important, though, the chemical industry has developed many different product lines to supply the needs of both the consumer and the industry. Copper Oxide, for example, is a key ingredient in many industrial chemical industries, and plays a role in the production of stain-resistant, waterproof, and heat-resistant synthetic fabrics.
A quick side note: I am not a chemist, nor do I play one on TV. I'm just a guy who writes about household chemicals. I have never worked with any of the following chemicals, but I will try to describe them as accurately as I can.

Copper Oxide is an electrolyte that is found in trace amounts in our bodies, but is commonly used in the food industry as a stabilizer and antioxidant. When it is used in food, it is most commonly in the form of a salt, but is also sold in crystals and powders. Copper Oxide crystals are often used to stabilize emulsions, which are used in food products like salad dressings, spreads, and ice creams. Copper Oxide powders are typically used in baking as a leavening agent or for pickling vegetables. Cupric oxide (or CuO in short) is a chemical compound that is used as an inorganic pigment, especially for white pigments. It is a white form of copper oxide with a greenish tinge. It is insoluble in water and is used as a pigment in paints, glazes, and ceramic glazes (though it is less used in ceramic glazes than in paints nowadays). It is also used as an electrode material in dry electrodes.

Cupric oxide (CuO) is a common oleoresin that is found in foods such as cereal grains, nuts, fruits and vegetables. It is also used in pharmaceutical applications such as antacids, antiperspirants, as a flame retardant and as a biocide. The most common uses for cupric oxide are in the production of fertilizer and pharmaceuticals, however, it is also used in the production of steel, plastics, paper, paints, and carpets. Copper Oxide is a chemical that has been used for many years in a variety of different products. Nonetheless, it was only recently that such an article was published in a peer-reviewed journal by the International Agency for Research on Cancer (IARC). IARC has been widely criticized by scientists as a politically motivated organization, and by many people alike. It is extremely important for everyone to have a basic understanding of what IARC is, and what it is truly capable of doing.

I did not know anything about cupric oxide before I started working with this compound. Cupric oxide, CuO, is actually quite common. It is a naturally occurring mineral that has been used in hundreds of thousands of products over the years. The stuff is everywhere. It's even in the air that you breathe. Copper Oxide is a mineral and as such has been used in all kinds of things. It has been used in the past as a pigment for paints, in dyes for fabrics, in dye for food items, in paper & wood finishes, and in printing ink. It has been used in wood stain, wood preservatives, cosmetics, and even as a water purifier.