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Bleaching of wood pulp is the chemical processing of wood pulp to lighten its color and whiten the pulp. The primary product of wood pulp is paper, for which whiteness (similar to, but distinct from brightness) is an important characteristic. [1]
Sodium hypochlorite is most often encountered as a pale greenish-yellow dilute solution referred to as chlorine bleach, which is a household chemical widely used (since the 18th century) as a disinfectant and bleaching agent.
"Bleaching powder" usually refers to a formulation containing calcium hypochlorite. [citation needed] Oxidizing bleaching agents that do not contain chlorine are usually based on peroxides, such as hydrogen peroxide, sodium percarbonate, and sodium perborate. These bleaches are called "non-chlorine bleach", "oxygen bleach", or "color-safe bleach".
Chlorine dioxide can be used for air disinfection [33] and was the principal agent used in the decontamination of buildings in the United States after the 2001 anthrax attacks. [34] After the disaster of Hurricane Katrina in New Orleans , Louisiana , and the surrounding Gulf Coast, chlorine dioxide was used to eradicate dangerous mold from ...
Calcium hypochlorite is an inorganic compound with chemical formula Ca(Cl O) 2, also written as Ca(OCl) 2.It is a white solid, although commercial samples appear yellow. It strongly smells of chlorine, owing to its slow decomposition in moist air.
It is a strong oxidizing agent that is used as a catalyst in polymer chemistry, as an etchant, and as a cleaning and bleaching agent. [ 1 ] Preparation and structure
The Food and Drug Administration began to review the safety of triclocarban and triclosan in the 1970s, but due to the difficulties of finding antimicrobial alternatives, no final policy, or "drug monograph," was established. [20] Legal action by the Natural Resources Defense Council in 2010 forced the FDA to review triclocarban and triclosan. [20]
Potassium permanganate is widely used in the chemical industry and laboratories as a strong oxidizing agent, and also as a medication for dermatitis, for cleaning wounds, and general disinfection. It is on the World Health Organization's List of Essential Medicines. [5] In 2000, worldwide production was estimated at 30,000 tons. [5]