Copper (II) oxide, likewise known together cupric oxide or the mineral tenorite, is an inorganic compound supplied as precursor or raw product in the manufacturing of chemical products that save copper.

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Formula and also structure: Copper (II) sulfate chemical formula is CuO and also its molar mass is 79.55 g mol-1. The molecule is created by one Cu2+ cation bond to a oxygen anion O2-. The cystral framework is a monoclinic crystal system with a copper atom combination by 4 oxygen ions. Its chemistry structure can be written as below, in the usual representations offered for organic molecules.


Occurrence: Copper (II) oxide is found in nature together being part of the mineral tenorite and also it is extracted v the classic mining techniques.

Preparation: back copper (II) oxide have the right to be found in nature, the is no extracted in a big scale, for this reason that commercial synthesis the this link is required. The CuO is prepared through the reaction that copper metal and also oxygen gas in ~ high temperature >500 °C:

2 Cu + O2 → 2 CuO

Physical properties: Copper (II) oxide is a black to dark brown powder. The oxide thickness is 6.31 g mL-1. The melting suggest is 1326 °C , if the boiling point is 2000 °C. The is not soluble in water, although that is soluble in ammonium chloride and also potassium cyanide solutions. That is likewise insoluble in ethanol.

Chemical properties: as result of the capacity of copper (II) oxide to act as an oxidizing agent, it can be used in the treatment of hazardous materials as the very toxic cyanide or halogenated hydrocarbons. The residual water of the reactions, that include copper metal, have the right to be disposing in a safe way. The main reactions are:

C6H5OH + 14CuO → 6CO2 + 3H2O + 14Cu

C6Cl5OH + 2H2O + 9CuO → 6CO2 + 5HCl + 9Cu

Uses: Cupric oxide is used in the manufacturing of copper salts together the copper sulfates or copper nitrates. It is offered in the production of dyes, pigments and paints because of the characteristic blue and green color linked with the Cu2+ cation. It is likewise used in some batteries together the lithium-copper batteries.

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Health impacts / safety and security hazards: Copper (II) oxide is not toxic come humans and animals in low concentration. In part cases, it deserve to be found in water. However in high concentration, it have the right to be toxicity for the aquatic life. It have the right to explode once heated with with powdered aluminum, anilinium perchlorate, hydrogen or magnesium.