9665. Triethanolamine

Nomenclature

CAS number: 102-71-6
2,2′,2″-Nitrilotrisethanol; trihydroxytriethylamine; tris(hydroxyethyl)amine; triethylolamine; trolamine.
C6H15NO3; mol wt 149.19.
C 48.30%, H 10.13%, N 9.39%, O 32.17%.

Description and references

Produced along with mono- and diethanolamine by ammonolysis of ethylene oxide. See the refs under Ethanolamine. Monograph: E. J. Fischer, Trithanolamin und andere Alkanolamine (Heidelberg, 4th ed., 1954).

Chemical structure

Properties

Very hygroscopic, viscous liq. Slight ammoniacal odor. Turns brown on exposure to air and light. d420 1.1242; d460 1.0985. One gallon weighs 9.37 lbs. mp 21.57°. bp760 335.4°. See: McDonald et al., J. Chem. Eng. Data 4, 311 (1959). Viscosity (cP): 590.5 (25°); 65.7 (60°). Strong base. pK (25°) 9.50. pH of 0.1N aq soln 10.5. nD20 1.4852. Flash pt 365°F. Miscible with water, methanol, acetone. Soly at 25° in benzene, 4.2%; in ether, 1.6%; in carbon tetrachloride, 0.4%; in n-heptane, <0.1%.

Derivative

Hydrochloride.

Nomenclature

CAS number: 637-39-8
C6H15NO3.HCl; mol wt 185.65.
C 38.82%, H 8.69%, N 7.54%, O 25.85%, Cl 19.10%.

Properties

Crystals from ethanol, mp 177°.

Derivative

Salicylate.

Nomenclature

CAS number: 2174-16-5
Trolamine salicylate; Mobisyl (Ascher); Myoflex (Novartis).
C6H15NO3.C7H6O3; mol wt 287.31.
C 54.35%, H 7.37%, N 4.88%, O 33.41%.

Use

Intermediate in the manuf of surface active agents, textile specialties, waxes, polishes, herbicides, petroleum demulsifiers, toilet goods, cement additives, cutting oils. In making emulsions with mineral and vegetable oils, paraffin and waxes. Solvent for casein, shellac, dyes; manuf synthetic resins; increasing the penetration of organic liquids into wood and paper. In the production of lubricants for the textile industry. Pharmaceutic aid (alkalizer).

Therapeutic Category

Analgesic.