What is EDTA and its structure?
C10H16N2O8
Ethylenediaminetetraacetic acid/Formula
What is metal EDTA complex?
EDTA or ethylenediaminetetraacetic acid is a novel molecule for complexing metal ions. It is a polyprotic acid containing four carboxylic acid groups (acidic hydrogens are red) and two amine groups with lone pair electrons (green dots). The classic structural formula is given below.
What type of complex does EDTA form with metal ions?
EDTA forms an octahedral complex with most 2+ metal cations, M2+, in aqueous solution.
Why does EDTA form stable complexes with metal ions?
EDTA-metal ligand complex The oxygens in the four carboxylic groups deprotonate, and one of the lone electron pairs left on these is available to form a coordination bond with the metal ion. The complexes formed are very strong because they form stable five-membered rings, i.e. chelates.
What is geometry of Ca EDTA complex?
Figure 6 presents the molecular structure of the Ca-EDTA complex. In the complex, EDTA acts as a hexadentate unit by wrapping itself around the metal ion with four oxygen atoms and two nitrogen atoms and forms several five-member chelate rings. …
What is the structure of metal EDTA?
Ethylenediaminetetraacetic acid (EDTA) is an aminopolycarboxylic acid with the formula [CH2N(CH2CO2H)2]2. This white, water-soluble solid is widely used to bind to iron and calcium ions. It binds these ions as a hexadentate (“six-toothed”) chelating agent.
Why is a metal EDTA complex more stable than a metal EBT complex?
EDTA is insoluble in water at low pH because H4Y is predominant in that pH (less than 2). With increasing the pH, each hydrogen ion in the carboxyl groups of EDTA will start to dissociate. As we need Y4- to react with the metal ions present in the titration solution, we use pH 10 buffer such as ammonium chloride.
How does EDTA chelate metal ions?
EDTA is a versatile chelating agent. It can form four or six bonds with a metal ion, and it forms chelates with both transition-metal ions and main-group ions. EDTA deactivates these enzymes by removing the metal ions from them and forming stable chelates with them.
What is the structural formula for EDTA?
The formula of the chemical compound Ethylenediaminetetraacetic acid is C10H16N2O8
What is EDTA and what does it do?
In chelation therapy, a dose of a medication called ethylenediaminetetraacetic acid (EDTA) is delivered into your bloodstream through an intravenous (IV) line. This medication seeks out and binds to minerals in your bloodstream. Once the medication binds to the minerals,…
What is the full form of EDTA and its use?
EDTA, or ethylenediaminetetraacetic acid, is a chelating agent used in food, in chelation therapy and in many household products. A chelating agent is a molecule that can form many bonds to a single metal ion, such as calcium, magnesium, lead or iron.
What is principle of EDTA?
Principle of EDTA method- The hardness of water can be determined by using EDTA method. EDTA is Ethylene diamine tetra acetic acid . It dissolves in water with great difficulty, but its disodium salt dissolve in water quickly & completely It is hexa dentate ligend. It binds the metal ions in water to give stable chelate complex.