In today’s article, we’ll explore the uses and applications of ethylenediaminetetraacetic acid disodium salt dihydrate (CAS 6381-92-6), a laboratory element belonging to the category of analytical reagents that we think is worth discussing.

To begin with, it’s an aminopolycarboxylic acid with the formula [CH2N(CH2CO2H)2]2. This white solid is soluble in water and commonly used to chelate iron (Fe2+/Fe3+) and calcium (Ca2+) ions, forming complexes in water even at neutral pH.

Later on, we’ll delve into its uses, but we’ll give you a quick look: it’s employed to chelate formulations containing Fe and Ca, as well as to release iron ions under conditions where their oxides are insoluble.

What is Ethylenediaminetetraacetic Acid?

Ethylenediaminetetraacetic acid, also known as EDTA or less frequently as AEDT, is a compound used as a chelating agent with the ability to form complexes with a metal that possesses an octahedral coordination structure.

Chelating substances are capable of transferring electrons and coordinating with another metallic substance, which can leave its molecular orbitals free. In addition to this, they can acquire electric density in π-type orbitals.

Adding to this, we call these types of molecules chelates. With them, we can obtain anything from simple substances like ammonia to more elaborate ones like EDTA. The difference lies in the number of atoms and bonds they possess to coordinate with a metallic center.

This type of molecule is known as chelates or coordination ligands. With them, we can obtain anything from simple substances like ammonia to more complex ones like ethylenediaminetetraacetic acid. The difference between these two compounds lies in the number of bonds they possess to coordinate with a metallic nucleus, as they can create single, double, and triple bonds.

EDTA has four carboxyls and two amino groups, capable of donating electron pairs or Lewis bases. Likewise, the ability of ethylenediaminetetraacetic acid disodium salt dihydrate (CAS 6381-92-6) to donate its six electron pairs for the formation of coordinated covalent bonds to metallic cations is noteworthy. Often, it is ionized, allowing it to form up to six coordinated covalent bonds with metallic cations.

At DC Fine Chemicals, as suppliers of fine chemicals worldwide, we hope this article helps to expand your knowledge of our product, ethylenediaminetetraacetic acid disodium salt dihydrate (CAS 6381-92-6). 

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