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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.
Tetrasodium iminodisuccinate is a chelating agent, forming complexes of moderate stability (10 −16), which includes (as a pentadentate ligand) alkaline earth and polyvalent heavy metal ions with one molecule of water in an octahedral structure. [7] In 0.25% aqueous solution, a pH of 11.5 results for tetrasodium iminodisuccinate. The salt is ...
This white, water-soluble powder has a wide range of applications across industries. Originally derived from gluconic acid in the 19th century, Sodium Gluconate is known for its chelating properties and is utilized as a chelating agent in various processes. It finds applications in textile, metal surface treatment, cement, and more.
Like EDTA, its sodium salt is used for water softening to remove Ca 2+. For this purpose, NTA is a replacement for triphosphate, which once was widely used in detergents, and cleansers, but can cause eutrophication of lakes. In one application, sodium NTA removes Cr, Cu, and As from wood that had been treated with chromated copper arsenate. [9]
It serves as a "builder", industrial jargon for a water softener. In hard water (water that contains high concentrations of Mg 2+ and Ca 2+), detergents are deactivated. Being a highly charged chelating agent, TPP 5− binds to dications tightly and prevents them from interfering with the sulfonate detergent. [3]
Chelating resins are a class of ion-exchange resins. They are almost always used to bind cations, and utilize chelating agents covalently attached to a polymer matrix. Chelating resins have the same bead form and polymer matrix as usual ion exchangers. Their main use is for pre-concentration of metal ions in a dilute solution.