Many kitchens have copper products - for example, cezve, stewpan, samovar, tray. They can be both ancient, preserved from ancient times, and modern remake. Copper gizmos are not only beautiful, but also very convenient in everyday life.
Copper products have a unique charm, which allows you to use them not only for their intended purpose, but also in order to please the eye. For example, trays are often used not only as kitchen utensils, but as decoration elements. The only nuisance - copper utensils can darken or become covered with a greenish coating.
Why do copper dishes go dark?
A copper tray of remarkable beauty can faithfully serve you for many years, but when kept in the air, its surface acquires a green tint. Such a raid looks very ugly, and in itself is a little toxic. This happens due to the effect of air on the material.
Air is a mixture of gases - in addition to nitrogen and oxygen, it also has carbon dioxide, and a little water vapor, as well as hydrogen sulfide. This content contributes to the formation of black or green plaque on the surface of copper products. Green plaque - copper hydroxide-carbonate - is a substance that is similar in composition to the malachite mineral.
