Noun
a white powder comprised of calcium hydroxide and chloride and hypochlorite and used to bleach and/or disinfect
Source: WordNetHistorically, bromine was produced by adding sulfuric acid and bleaching powder to natural brine. Source: Internet
It was not until 1799, when Charles Tennant patented a process for producing solid bleaching powder (calcium hypochlorite) that it became a commercial success. Source: Internet
Sulfuric acid began to be used as a more efficient agent as well as lime by the middle of the century, but it was the discovery of bleaching powder by Charles Tennant that spurred the creation of the first great chemical industrial enterprise. Source: Internet