CAS Registry Number

CAS 139-13-9 — Nitrilotriacetic acid

Nitrilotriacetic acid (NTA) is a synthetic aminopolycarboxylic acid widely used as a chelating agent in detergents, water treatment, and industrial cleaning formulations to bind metal ions and prevent scaling. It is also applied in biochemical research for protein purification and metal ion buffering. Nitrilotriacetic acid has the CAS number 139-13-9, with the molecular formula N(CH₂COOH)₃ and a molecular weight of 191.14 g/mol. It is stored at ambient conditions and carries a **Warning** signal word under GHS classification. Molekula supplies Nitrilotriacetic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.