Ads
related to: manufacture of bleaching powder
Search results
Results from the WOW.Com Content Network
St Rollox was started as a chlorine bleaching manufacturer that used the Claude Louis Berthollet potash-chlorine bleaching liquor and then chemically modified by substituting the potash with lime to produce a bleach. [3] In 1799, the process changed when the company moved to the Macintosh-Tennant process to produce dry bleaching powder [3] [12 ...
The Deacon process, invented by Henry Deacon, is a process used during the manufacture of alkalis (the initial end product was sodium carbonate) by the Leblanc process. Hydrogen chloride gas was converted to chlorine gas, which was then used to manufacture a commercially valuable bleaching powder , and at the same time the emission of waste ...
Bleach is the generic name for any chemical product that is ... "Bleaching powder" usually refers to a formulation ... It is used in the manufacture of paper ...
Charles Tennant and Charles Macintosh developed an industrial process in the late 18th century for the manufacture of chloride of lime, patenting it 1799. [4] Tennant's process is essentially still used today, [ 4 ] [ 3 ] and became of military importance during World War I , because calcium hypochlorite was the active ingredient in trench ...
Tennant's great discovery was bleaching powder (chloride of lime) for which he took a patent in 1799. The process involved reacting chlorine and dry slaked lime to form bleaching powder, a mixture of calcium hypochlorite and other derivatives. It seems Macintosh also played a significant role in this discovery and remained one of Tennant's ...
By the 1880s, methods for converting the hydrochloric acid to chlorine gas for the manufacture of bleaching powder and for reclaiming the sulfur in the calcium sulfide waste had been discovered, but the Leblanc process remained more wasteful and more polluting than the Solvay process. The same is true when it is compared with the later ...
The French chemist Claude Louis Berthollet first demonstrated the bleaching properties of chlorine and subsequently developed liquid bleaches around 1789. James Watt is credited with bringing it to Britain, and a fellow Scot, Charles Tennant patented a more practical bleaching powder that made chlorine-based bleaching a commercial success.
Chlorine releasing solutions, such as liquid bleach and solutions of bleaching powder, can burn the skin and cause eye damage, [2] especially when used in concentrated forms. As recognized by the NFPA, however, only solutions containing more than 40% sodium hypochlorite by weight are considered hazardous oxidizers.
Ads
related to: manufacture of bleaching powder