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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.
Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes
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.
EDTA is used to solubilize iron(III) in water. In the absence of EDTA or similar chelating agents, ferric ions form insoluble solids and are thus not bioavailable. [1] Together with pentetic acid (DTPA), EDTA is widely used for sequestering metal ions.
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 is a white solid that is highly soluble in water. Commercial samples are often hydrated, e.g. Na 4 EDTA. 4H 2 O. The properties of solutions produced from the anhydrous and hydrated forms are the same, provided they are at the same pH. It is used as a source of the chelating agent EDTA 4-. A 1% aqueous solution has a pH of approximately 11.3.
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 ...
The core technique was the usage of a bridge-type heterogeneous chelation architecture to capture metal in a stable water-soluble state. Surprisingly, platinum ion in this particular multi-phase bridged chelated state is amazingly stable. Chelated platinum solution is in the form of high energy dielectric aqueous solution.