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verdigris


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A green patina of basic copper salts formed on copper. The composition of verdigris varies depending on the atmospheric conditions, but includes the basic carbonate CuCO3.Cu(OH)2, the basic sulphate CuSO4.Cu(OH)2.H2O, and sometimes the basic chloride CuCl2.Cu(OH)2.

Subjects: Art — Chemistry.


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