EDTA forms stable complexes with Ca+2 ions due to its structure and ability to chelate metal ions. EDTA contains multiple electron-donating groups, such as amine and carboxylic acid groups, which can coordinate with the calcium ions. This chelation process forms stable, ring-like structures around the calcium ions, preventing them from participating in other chemical reactions. As a result, EDTA is widely used as a chelating agent in various applications, including in the food industry and in medicine.
