Nitrilotriacetate (NTA) in detergents in accordance with ASTM D4954

Nitrilotriacetate (NTA) is a complexing agent that is used in detergents as a water softener. NTA forms complexes with metal ions such as Ca²⁺, Cu²⁺ and Fe³⁺ and thus prevents the formation of lime and its deposits. The NTA content is therefore an important parameter for the quality of detergents and is determined using back titration of an excess of copper nitrate.

Download AN-T-170 (EN)