What is the use of sequestering agents?

What is the use of sequestering agents?

Sequestering agents are employed in a number of applications like builders in detergent formation to eliminate interfering effects caused by dissolved metal salts, specifically calcium or magnesium salts.

What is meant by Sequesterisation?

removal or separation; banishment or exile. a withdrawal into seclusion; retirement. segregation from others; isolation: sequestration of jurors during a trial. the sequestering of property.

Why is EDTA a sequestering agent?

When held inside the complex, the ions have a limited ability to react with other ions, clays or polymers. Ethylenediamine tetraacetic acid (EDTA) is a well-known sequestering agent for the hardness ions, such as Ca+2, and is the reagent solution used in the hardness test protocol published by API.

Which one is a sequestering agent?

Sequestering agents include chelants and threshold inhibitors. Chelants such as Ethylenediaminetetraacetic Acid (EDTA), NTA, and DTPA react stoichiometrically (on an equal mole basis) with ions. As the molecular weight of EDTA is 292 and calcium sulfate is 136, fairly large amounts of EDTA must be used.

Which is the best definition of a sequestering agent?

A sequestering agent, or sequestrant, is a chemical substance containing molecules able to bond with metal ions to form chelate complexes. These complexes formed by chelating agents are either large enough to be filtered out of the solution, or are brought back into solution preventing potential…

What makes a sequestering agent a chelating agent?

A sequestering agent, or sequestrant, is a chemical substance containing molecules able to bond with metal ions to form chelate complexes.  These complexes formed by chelating agents are either large enough to be filtered out of the solution, or are brought back into solution preventing potential interaction of metal ions with the solution.

How are sequestering agents used to control scaling?

Scaling can be controlled effectively by the use of sequestering agents and chelates, which are capable of forming soluble complexes with metal ions. Sequestering is not the same as precipitation, because sequestering does not form a solid.

How are sequestering agents used to treat metal poisoning?

They combine with calcium and magnesium ions as well as other heavy metal ions in hard water. They form molecules in which the ions are held so securely (sequestered) that they can no longer react. Sequestering agents are also known as chelating agents. Chelation is used in treatment of metal poisoning and in industrial extraction of metals.