Literally How to use a word that literally drives some people nuts. If the mineral was taken from the EDTA ligand, the ligand could not be used by the body and would be expelled. Sequestering agent - definition of Sequestering agent by The Free Dictionary https: Few companies today are willing to take on the extra expense of separating and sequestering carbon dioxide, but researchers are working on techniques to boost the efficiency of the process and lessen its cost see sidebar. Which type of algaecide is needed?
LinkedIn Facebook Google Plus. What is Sequestering Agents? Uses of Sequestering Agents. Sequestering agents or Chelating agents remove a metal ion from a solution system by forming a complex ion that does not have the chemical reactions of the ion that is removed.
Sequestering agents or Chelating agents are used to eliminate water hardness and heavy metals, such as iron and copper which can affect the scouring process. Sequestering agents These agents bind polyvalent cations such as calcium and magnesium in water and in fibres, thus preventing the precipitation of soaps. If polyvalent ions are present, insoluble soaps may form, settle on the fabric and produce resist spots. There are four major types of sequestering agents to choose from: The inorganic polyphosphates such as sodium tripolyphosphate and sodium hexametaphosphate are probably the best overall in that in addition to sequestering most metals they also aid in cleansing the fibres.
They may, however, hydrolyze at high temperature and loose their effectiveness. The aminocarboxylic acid types such as ethylenediaminetetraacetic acid EDTA are very good in that they sequester most metal ions and are very stable under alkaline conditions. The number of coordinate covalent bonds present in a coordination complex is called the coordination number.
Chelating agents are very useful in isolating heavy metals to remove them from drinking water, to deactivate metal ions that can cause precipitation and sealing, to limit available metal ion content, etc. Therefore, the applications of chelating agents are in the field of medical sciences, water treatment, corrosion control, etc.
Chelating agents can be found as either natural compounds or synthetic compounds. Amino acids , herbs like Cilantro, onions, and garlic are composed of chelating agents. Therefore, these natural sources are good at chelation. EDTA is a common example of a chelating agent. It is a multidentate ligand. This means it can bind with the metal ion via several atoms by forming coordinate covalent bonds. There are some other chelating agents that are Bidentate.
They form only two coordinate covalent bonds. A sequestering agent is a chemical compound that is capable of forming a complex with metal ions and helps to remove these ions from a solution. These sequestering agents can bind with several metal ions at a time.
When a sequestering agent has formed a complex with metal ions, these metal ions cannot undergo any other chemical reactions.
Sequestering agents form ring-like structures around metal ions. These ring structures can be removed from the solution along with the metal ions they are bound to. There are several active sites in sequestering agents; thus, these compounds are more reactive. The adverse effects of hard water can be avoided by using sequestering agents to treat hard water.
One common application of sequestering agents is the removal of water hardness. These compounds can bind with both calcium and magnesium ions in water. These compounds can bind with other heavy metals present in water as well. Therefore, these agents are useful in treating water chemically.
Definition - What does Sequestering Agent mean? In chemistry, a sequestering agent is a substance that removes ions from a solution system by forming a ring which does not have chemical reactions with the ion which is removed. Sequestering agents are chemicals added to swimming pools to bind with metals found in pools, keeping more metal in the water. What is a Sequestering Agent for swimming pools? A sequestering agent, or sequestrant, is a chemical substance containing molecules . 3. To remove or isolate (a chemical, often a gas) from an environment by incorporation, mixing, or insertion under pressure: plants that sequester toxins from wetlands; plans to sequester carbon dioxide produced by a power plant by injection into an underground aquifer.