Nitrilotriacetic acid trisodium salt

Nitrilotriacetic acid trisodium salt (Trisodium NTA, CAS 5064-31-3) is a synthetic aminopolycarboxylate chelating agent commercially available under trade names including Trilon A, Versene NTA 150, Versene NTA 335, and Hampshire NTA. It carries no assigned E-code and is not classified as a food additive.

In water treatment, Trisodium NTA sequesters calcium, magnesium, and heavy metal ions that cause scale formation, keeping them soluble and preventing mineral deposits in industrial systems. In textile and paper processing, it deactivates interfering metal ions during bleaching and dyeing operations, improving process consistency and reducing chemical consumption.

Trisodium NTA is supplied as a solid and is subject to REACH registration requirements within the European Union. Procurement teams should verify supplier SDS documentation and confirm compliance with applicable regional restrictions, as NTA is classified as a substance of concern in certain jurisdictions. Standard industrial packaging applies.