Ethylenediaminetetraacetic acid (EDTA), also called EDTA acid, is an aminopolycarboxylic acid with the formula [CH 2 N(CH 2 CO 2 H) 2] 2. This white, slightly water-soluble solid is widely used to bind to iron (Fe 2+ /Fe 3+) and calcium ions (Ca 2+), forming water-soluble complexes even at neutral pH. It is thus used to dissolve Fe- and Ca ...

EDTA. Some ligands can bond to a metal atom using more than two pairs of electrons. An example is ethylenediamminetetraacetate ion (EDTA 4-), the Lewis structure of which is shown below. EDTA 4-forms very stable complexes with most of the transition metals.

2019年6月4日 · EDTA is a hexadentate ligand, which means that it creates 6 bonds with a central metal ion. When it bonds with a calcium ion, it becomes EDTA calcium disodium. EDTA calcium disodium can then chelate other metal ions by exchanging its calcium ion for another metal ion that has a greater affinity for the EDTA molecule.

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.

2010年6月30日 · Ethylenediaminetetraacetic acid (EDTA), in the form of its alkali metal salt, is one of the most important classic reagents for complexometric determination of metal ions in solution. The tetraacetate ion forms strong complexes with most metal ions which, using an appropriate indicator ligand, facilitates accurate quantitative measurements by ...

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.

EDTA is a polyaminocarboxylic acid. Its conjugate base is ethylenediaminetetraacetate. It is a colorless compound that was first synthesized by Ferdinand Mün in 1935. EDTA is best known for its chelating property. It sequesters metal ions such as Ca2+ and Fe3+. (Read more: Stability Constants for Metal Ion–EDTA Complexes).

2023年3月14日 · EDTA (Ethylene Diamine Tetraacetic Acid) is an organic reagent that is frequently used in the complexometric titration. It is a chelating ligand with two nitrogen and four carboxylic acids that coordinates with metal ions. II. Nature of ligand. III. Number of metal chelate rings. II. Back titration. III. Replacement/ substitition titration. IV.

EDTA acts as a chelating agent, binding metal ions and facilitating their removal from solutions. It forms stable complexes with metals like calcium, magnesium, lead, and iron, preventing them from participating in unwanted reactions.

EDTA (ethylenediaminetetraacetic acid) is a versatile chelating agent that forms stable complexes with metal ions, significantly impacting various fields such as biochemistry and analytical chemistry.