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Triethanolamine Triethanolamine is also known as three supplement base amines and triethanol. It is a colorless oily liquid with the smell of ammonia. It absorbs water easily and turns brown when exposed to air or exposed to light. It becomes colorless or light yellow cubic crystal at low temperature.

Chemical properties:

It is a colorless, transparent and viscous liquid at room temperature. It is hygroscopic, has an ammonia odor, is alkaline, and is irritating. The melting point is 21.2℃, the boiling point is 360℃, the flash point is 193℃, the Chemicalbook relative density (d420) is 1.1242, and the refractive index (nD20) is 1.4852. Miscible in water, ethanol and acetone, slightly soluble in ether, benzene and carbon tetrachloride.

Purpose:

Used as a clean liquid for removing carbon dioxide or hydrogen sulfide from gas. Esters formed between triethanolamine and higher fatty acids are widely used as detergents, emulsifiers, humectants and lubricants, and are also used in the preparation of cosmetic balms. Triethanolamine is also used as a preservative, waterproofing agent, analytical reagent, and solvent. It can be used as an activator in the polymerization of nitrile rubber, and can also be used as an emulsifier and stabilizer for oils and waxes, and a softener for textiles under acidic conditions. It is one of the components of spinning oil for polyester and other synthetic fibers.

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production method

It is to feed ethylene oxide and ammonia water into the reactor, and perform a condensation reaction at a reaction temperature of 30-40°C and a reaction pressure of 70.9-304kPa to generate a mixed solution of mono-, di-, and triethanolamine, which is heated at 90-120°C. After dehydration and concentration, it is sent to three vacuum Chemicalbook distillation towers for vacuum distillation. Fractions are intercepted according to different boiling points to obtain monoethanolamine, diethanolamine and triethanolamine finished products with a purity of 99%. During the reaction process, if the proportion of ethylene oxide is increased, the production ratio of di- and triethanolamine will increase, which can increase the yield of di- and triethanolamine.

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Contact Information

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Post time: Nov-04-2024