Molecular formula :
nature : also known as the encrustation. In certain physical state (such as heating, etc.), water soluble salt into some mineral-soluble salt deposition on the surface of the heat transfer and the formation of a solid crystal layer. When the water boiled, in water soluble calcium bicarbonate [Ca (HCO3) 2] become slightly soluble salt calcium carbonate (CaCO3) , deposition from furring. Water and metal pipe interaction may also formed encrustation.
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