Triethanolamine
Title: Triethanolamine
CAS Registry Number: 102-71-6
CAS Name: 2,2¢,2¢¢-Nitrilotrisethanol
Additional Names: trihydroxytriethylamine; tris(hydroxyethyl)amine; triethylolamine; trolamine
Molecular Formula: C6H15NO3
Molecular Weight: 149.19
Percent Composition: C 48.30%, H 10.13%, N 9.39%, O 32.17%
Line Formula: N(CH2CH2OH)3
Literature References: Produced along with mono- and diethanolamine by ammonolysis of ethylene oxide. See the refs under Ethanolamine. Monograph: E. J. Fischer, Triäthanolamin und andere Alkanolamine (Heidelberg, 4th ed., 1954).
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%.
Melting point: mp 21.57°
Boiling point: bp760 335.4°
Flash point: Flash pt 365°F
pKa: pK (25°) 9.50
Index of refraction: nD20 1.4852
Density: d420 1.1242; d460 1.0985
 
Derivative Type: Hydrochloride
CAS Registry Number: 637-39-8
Molecular Formula: C6H15NO3.HCl
Properties: Crystals from ethanol, mp 177°.
Melting point: mp 177°
 
Derivative Type: Salicylate
CAS Registry Number: 2174-16-5
Additional Names: Trolamine salicylate
Trademarks: Mobisyl (Ascher); Myoflex (Novartis)
Molecular Formula: C6H15NO3.C7H6O3
 
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).
Therap-Cat: Analgesic.

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