EDTA (ethylenediamine-N,N,N,N-tetraacetic acid) CAS 60-00-4

EDTA is essentially identical to EDTA, however, in some sources this designation is used to emphasize the stoichiometry of the distribution of acetic groups in the molecule. Due to its highly complexing properties, EDTA is used for the selective binding of metalloions, which is important in solving water purification, pollution control, and sample preparation for analytical studies.

Chemical structure and synthesis

The molecular formula of EDTUC is the same as that of EDTA:

C10​H16​N2​O8​

Synthesis:
The synthesis is carried out by the same method as for classical EDTA – by the reaction of ethylenediamine with acetic acid derivatives under controlled conditions, which makes it possible to obtain a substance of high purity and stability.

Physico-chemical properties

• Solubility: It is perfectly soluble in water, which makes it easy to use in dissolved systems.

• Complexing ability: EDTA has a high affinity for metal ions due to the presence of six donor centers (two groups –NH and four groups –COOH).

• Stability: The product is stable in a wide pH range, which expands the scope of its application.

Application

• Analytical Chemistry and Ecology: It is used for complexometric determinations of the level of metalloions in water and other matrices.

• Pharmaceuticals: It is used as an active reagent for the treatment of heavy metal poisoning and regulation of the bioavailability of trace elements.

• Industry: It is used to correct the composition of technological solutions and prevent unwanted precipitation of metal ions.

Conclusion

EDTA, like classical EDTA, is an indispensable complexing agent widely used in various branches of science and industry. Its high ability to bind metal ions ensures the control of chemical processes, which is important for maintaining the purity of products, environmental protection and ensuring the safety of technological systems.