Cu2 Oh 2co3

Product description 
Product Name: cu2 oh 2co3 / copper carbonate / Basic copper carbonate
Synonyms: basic cupric carbonate; azurite; malachite; carbonato básico de cobre (Esp.); carbonato basico di rame (It.); carbonato básico de cobre
Chemical formula: Cu2(OH)2CO3
Molar mass: 221.11 g/mol
Boiling point: 554°F (290°C)
Density: 4 g/cm³
Soluble in: Acetic acid
CAS Number: 1184-64-1

Product information: 
Cu2(OH)2CO3 is a chemical compound, more properly called copper(II) carbonate hydroxide. It is an ionic compound (a salt) consisting of the ions copper(II) Cu2+, carbonate CO2-, and hydroxide HO-.
The name most commonly refers to the compound with formula CuCO(OH). It is a green crystalline solid that occurs in nature as the mineral malachite. It has been used since antiquity as a pigment, and it is still used as such in artist paints, sometimes called verditer, green bice, or mountain green.

Related knowledge: 
In presence of air and carbonates some basic carbonates like Cu2(OH)2CO3 can be formed. Exact composition can vary, depending on exact conditions of experiment. Air presence is critical for that. These are not dangerous compounds. Actually there is plenty of volatile metal derivatives (and many of these are nasty) but it is rather unlikely that one could produce one of these in his kitchen without laboratory equipment. The easiest to make would be perhaps chromyl chloride (CrO2Cl2) produced by reaction of chromates or chromic anhydride with concentrated hydrochloric acid. This compound is toxic and also strong oxidizer. Another one would be manganese heptoxide (Mn2O7) produced easily from permanganates and conc. sulfuric acid. This one is explosive and very powerful oxidizer.

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