Bleaching Powder


Bleaching powder, also called chlorinated lime, is a white powder, a mixture of calcium hyochlorite and calcium chloride. It is prepared by the action of chlorine on calcium hydroxide, used as a strong bleachng agent and disinfectant.

A bleach is a chemical that removes colors or whitens, often via oxidation. Common chemical bleaches include household chlorine bleach, a solution of approximately 3–6% sodium hypochlorite (NaClO), and oxygen bleach, which contains hydrogen peroxide or a peroxide-releasing compound such as sodium perborate, sodium percarbonate, sodium persulfate, tetrasodium pyrophosphate, or urea peroxide together with catalysts and activators, e.g., tetraacetylethylenediamine and/or sodium nonanoyloxybenzenesulfonate. Bleaching powder is calcium hypochlorite.