Ethylenediaminetetraacetic acid (EDTA) as the core structure of the
ethylenediaminetraacetic acid, its structure is delicate, quite unique in the field of chemistry. The structure of this substance, the center of the ethylenediaminetraacetic acid as the axis, derived from four carboxyl groups, like the stars and the moon, orderly layout.

Looking at its structure, the chain of ethylenediamine is like a bridge, cleverly connecting the carboxyl groups on both sides. The carboxyl group is active and is often the key in the reaction. This structure endows ethylenediaminetraacetic acid with extraordinary ability. In the complexation reaction, it is like the key of magic, which can precisely fit with many metal ions to form a stable complex.

Due to the unique structure of EDTA, in water quality treatment, it can capture metal impurities in water and purify water quality; in analytical chemistry experiments, it is a powerful tool for determining the concentration of metal ions, and the specific reaction with metal ions can be used to accurately calculate the content. This is due to the characteristics of its structure, the central structure is stable, and the carboxyl group activity is flexible. The two complement each other, making EDTA shine in many fields of chemistry and indispensable.