Ethanolamine (CAS 141-43-5), also known as Monoethanolamine (MEA) or 2-Aminoethanol, is a versatile organic chemical widely used in gas treatment, detergents, corrosion inhibitors, and cosmetics. Its chemical structure contains both an amine group (–NH₂) and a hydroxyl group (–OH), which gives it the ability to interact with metal ions.
A chelating agent is a molecule that can form multiple coordinate bonds with a single metal ion, creating a stable chelate complex. Common examples include EDTA (ethylenediaminetetraacetic acid), citric acid, and DTPA.

Ethanolamine as a Precursor to Chelating Agents
Although ethanolamine is not a strong chelating agent itself, it plays an role in the production of powerful chelators.
Example:
- When ethanolamine reacts with ammonia, it can form ethylenediamine.
- Ethylenediamine is a key raw material in the synthesis of EDTA, one of the most widely used industrial and laboratory chelating agents.
- This makes ethanolamine a intermediate in the chelating agent supply chain.
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