Disodium EDTA

Disodium EDTA (CAS 139-33-3), also known as Na2H2EDTA, Disodium Edetate, or Complexon III, is a chelating agent that binds divalent and trivalent metal ions through its four carboxylate and two amine groups, forming stable, water-soluble complexes. It carries no E-code designation and is classified under HS code 29224900.

In water treatment, Disodium EDTA sequesters calcium and magnesium ions to prevent scale formation in industrial cooling systems and boilers. In personal care formulations, it deactivates trace metal contaminants that would otherwise catalyse oxidative degradation of active ingredients, extending product shelf life. It also functions as a preservative potentiator by disrupting the outer membrane of gram-negative bacteria.

Disodium EDTA is available in technical, food-grade (FCC), and pharmaceutical-grade (Ph.Eur.) specifications to meet the requirements of regulated industries. The substance is registered under REACH and supplied in 25 kg bags or bulk formats. Buyers should confirm grade suitability against their application's regulatory framework prior to procurement.