Others

  1. International trade
  2. Others
Diethanolamine

Diethanolamine

Abbreviation：DEA(Fourth grade Poison)
CAS NO：111-42-2
－ ＋
Add to cart
1108018.jpg
/
DETAIL
Diethanolamine, often abbreviated as DEA or DEOA, is an organic compound with the formula HN(CH2CH2OH)2. Pure diethanolamine is a white solid at room temperature, but its tendencies to absorb water and to supercool meaning that it is often encountered as a colorless, viscous liquid. Diethanolamine is polyfunctional, being a secondary amine and a diol. Like other organic amines, diethanolamine acts as a weak base. Reflecting the hydrophilic character of the secondary amine and hydroxyl groups, DEA is soluble in water. Amides prepared from DEA are often also hydrophilic. 

Production
The reaction of ethylene oxide with aqueous ammonia first produces ethanolamine:

which reacts with a second and third equivalent of ethylene oxide to give DEA and triethanolamine:

Uses
DEA is used as a surfactant and a corrosion inhibitor. It is used to remove hydrogen sulfide and carbon dioxide from natural gas.

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. In oil refineries, a DEA in water solution is commonly used to remove hydrogen sulfide from sour gas. It has an advantage over a similar amine, ethanolamine, in that a higher concentration may be used for the same corrosion potential. This allows refiners to scrub hydrogen sulfide at a lower circulating amine rate with less overall energy usage.

DEA is a chemical feedstock used in the production of morpholine.

Morpholine from DEA.png
Amides derived from DEA and fatty acids, known as diethanolamides, are amphiphilic.

The reaction of 2-chloro-4,5-diphenyloxazole with DEA gave rise to Ditazole. The reaction of DEA and Isobutyraldehyde with water removed produces an Oxazolidine.

Commonly used ingredients that may contain DEA
DEA is used in the production of diethanolamides, which are common ingredients in cosmetics and shampoos added to confer a creamy texture and foaming action. Consequently, some cosmetics that include diethanolamides as ingredients contain DEA. Some of the most commonly used diethanolamides include:

Cocamide DEA
DEA-Cetyl Phosphate
DEA Oleth-3 Phosphate
Lauramide DEA
Myristamide DEA
Oleamide DEA
Back