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Citric acid is an excellent chelating agent, binding metals by making them soluble. It is used to remove and discourage the buildup of limescale from boilers and evaporators. [ 15 ] It can be used to treat water, which makes it useful in improving the effectiveness of soaps and laundry detergents.
A chelating agent is the main component of some rust removal formulations. Citric acid is used to soften water in soaps and laundry detergents. A common synthetic chelator is EDTA. Phosphonates are also well-known chelating agents. Chelators are used in water treatment programs and specifically in steam engineering.
Pages in category "Chelating agents" The following 164 pages are in this category, out of 164 total. ... Citric acid; Clathrochelate; Corrole; Cryptand; 2.2.2 ...
2.3 Chelating agents. 2.4 Washing soda method. 2.5 Distillation and rain water. ... Citric acid is used to soften water in soaps, personal care products and laundry ...
It is a colorless weak organic acid. It occurs naturally in citrus fruits. In biochemistry, it is an intermediate in the citric acid cycle, which occurs in the metabolism of all aerobic organisms. More than two million tons of citric acid are manufactured every year. It is used widely as acidifier, flavoring, preservative, and chelating agent.
These agents include citric and phosphoric acids, which are nonaggressive. Surfactants are usually modified fatty alcohols . Silver cleaning is a specialty since silver is noble but tends to tarnish via formation of black silver sulfide , which is removable via silver-specific complexants such as thiourea .
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A process related to the sol-gel route is the Pechini, or liquid mix, process (named after its American inventor, Maggio Pechini). An aqueous solution of suitable oxides or salts is mixed with an alpha hydroxycarboxylic acid such as citric acid.
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