Nitrilotriacetic acid (NTA) is a chelating agent that binds to metal ions. It's used in many industrial applications, including detergents, water treatment, and metal plating.
Uses
- Detergents: The trisodium salt of NTA is used as a builder in laundry detergents to replace phosphates.
- Water treatment: NTA is used to treat boiler water to prevent mineral scale buildup.
- Metal plating: NTA is used in metal plating and cleaning.
- Pulp and paper: NTA is used in the production of paper and cellulose.
- Rare earth elements: NTA is used as an eluting agent to purify rare earth elements.
Properties
- NTA is an aminotricarboxylic acid with the formula C6H9NO6.
- It's a colorless solid with a melting point of 241.5°C.
- It's hardly soluble in its acidic form.
- It's resistant to biodegradation but can be degraded over time.
Other uses
- NTA has been proposed as a therapeutic chelating agent for manganese poisoning and iron overloading.
- NTA is used in photography, textile manufacturing, and water treatment