The chemical symbol expression of basic copper carbonate is: Cu2(OH)2CO3.

Basic copper carbonate, also known as patina and patina, is a substance produced by the reaction of copper with oxygen, carbon dioxide, water vapor and other substances in the air. When heated in the air, it will decompose into copper oxide, water and carbon dioxide, dissolve in acid and generate corresponding copper salts.

Avoid material acidity. It is insoluble in cold water and alcohol, decomposes in hot water, and is soluble in acid to form the corresponding copper salt. Soluble in cyanide, ammonia, ammonium salt and alkali metal carbonate solutions to form copper complexes. Brown copper oxide forms when boiled in alkali metal carbonate solutions. Unstable to hydrogen sulfide.

Heat to 200℃ to decompose black copper oxide, water (small water droplets formed by condensation when exposed to cold) and carbon dioxide. Unstable in hydrogen sulfide gas. Solubility in water is 0.0008. Copper carbonate is dusty, so contact with skin, eyes, etc. and inhalation should be avoided.

Insoluble in water, it dissolves in ammonia water to form copper ammonia complex ions. Decomposes when heated to 220°C. Basic copper carbonate with a composition of 2:1 is sky blue powdery crystal. If left in the air for a long time, it will absorb moisture and release part of carbon dioxide, and slowly turn into 1:1 type basic copper carbonate, which is insoluble in water, but soluble in ammonia to form copper ammonia complex ions.

Product Usage

Used in organic catalysts, pyrotechnics manufacturing and pigments. In agriculture, it is used as a preventive agent for plant smut, a pesticide, an antidote for phosphorus poisoning, and a fungicide for seeds; mixed with asphalt to prevent livestock and wild rats from chewing saplings; used as a copper additive in feed , used as dealkalizing agent and raw material for producing copper compounds during crude oil storage. It can also be used for electroplating, anti-corrosion and analytical reagents.