Triethanolamine

Triethanolamine (TEA) is a viscous organic compound that is both a tertiary amine and a triol. A triol is a molecule with three alcohol groups. Like other amines, triethanolamine is a weak base.

Structure and properties

Triethanolamine is a colorless, viscous liquid. It is hygroscopic and has a slight ammonia-like odor. The chemical formula for triethanolamine is C₆H₁₅NO₃, and its molecular structure consists of a central nitrogen atom bonded to three ethanol groups. This structure allows it to act as both a base and an alcohol.

Synthesis

Triethanolamine is produced by the reaction of ethylene oxide with ammonia. The reaction can be controlled to produce monoethanolamine, diethanolamine, or triethanolamine, depending on the stoichiometry and reaction conditions.

Reaction of ethylene oxide with ammonia to produce ethanolamines.

Applications

Triethanolamine is used in a variety of industrial and consumer products. It is commonly used as a surfactant and emulsifier in cosmetics and personal care products, such as lotions, creams, and shampoos. In the textile industry, it is used as a softening agent. It also serves as a corrosion inhibitor in metalworking fluids and as a neutralizing agent in detergents.

Safety and environmental impact

Triethanolamine is considered to be of low toxicity, but it can cause skin and eye irritation. Prolonged exposure may lead to more serious health effects. It is important to handle it with appropriate safety measures, such as wearing protective clothing and eye protection.

Related pages

• Ethanolamine
• Diethanolamine
• Surfactant

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  Triethanolamine
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  Reaction of ethylene oxide with ammonia