Bleach (cleaning)

Bleach (cleaning)

About Bleach (cleaning)

The bleaching process has been known for thousands of years, but the chemicals currently used for bleaching resulted from the work of several 18th century scientists. Chlorine is the basic for the most commonly used bleaches, for example, the solution of sodium hypochlorite, which is so ubiquitous that many people just call it "bleach", and calcium hypochlorite, the major compound in "bleaching powder". Oxidizing bleaching agents that do not contain chlorine most often are based on peroxides, such as hydrogen peroxide, sodium percarbonate and sodium perborate. While most bleaches are oxidizing agents, a fewer number are reducing agents such as sodium dithionite and sodium borohydride.

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