Amines

Monoethanolamine (MEA) is the earliest and widely used amine for sweetening sour gas due to its selectivity towards the H2S and CO2 [ ]. However, it has a high vapor pressure, results in high solvent losses.

Diethanolamine is widely used in the preparation of diethanolamides and diethanolamine salts of long-chain fatty acids that are formulated into soaps and surfactants used in liquid laundry and dishwashing detergents, cosmetics, shampoos and hair conditioners.

Diethanolamine is used in metalworking fluids for cutting, stamping and die-casting operations as a corrosion inhibitor. In the production of detergents, cleaners, fabric solvents and metalworking fluids, diethanolamine is used for acid neutralization and soil deposition.

It works as a surfactant and stabilizer and is responsible for improving the quality of the products. Its pH adjusting abilities make it incredibly useful in cleansers, sunscreens, fragrances, and body lotions. There are no skin care benefits of TEA, and using products with triethanolamine for skin is considered safe.

Stabilizes emulsions: As an emulsifier or stabilizer, triethanolamine helps emulsions, such as creams and lotions, last longer, according to Romanowski. Thickens the formula: Schultz adds that as far as sensory or aesthetic benefits, triethanolamine also helps thicken and add body to the formula.