NITRILOTRIACETIC ACID

'Nitrilotriacetic acid' (NTA), C₆H₉NO₆, is a chemical compound used as a chelating agent which forms coordination compounds with metal ions (chelates) such as Ca²⁺, Cu²⁺ or Fe³⁺. In 1999 about 20,000 tons of NTA were used in Europe.
The uses of NTA are similar to that of EDTA.
In biotechnology applications, NTA is combined with His-tags.
In contrast to EDTA, NTA is easily biodegradable and is almost completely removed during wastewater treatment.

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