9670. Triethylene Glycol

Nomenclature

CAS number: 112-27-6
2,2′-[1,2-Ethanediylbis(oxy)]bisethanol; 2,2′-ethylenedioxybis(ethanol).
C6H14O4; mol wt 150.17.
C 47.99%, H 9.40%, O 42.62%.

Description and references

Prepd from ethylene oxide and ethylene glycol in the presence of sulfuric acid: Matignon et al., Bull. Soc. Chim. [5] 1, 1308 (1934). Manuf by forming ether-ester of HOCH2COOH with glycol and then hydrogenating: Gresham, US 2654786 (1953 to du Pont). Toxicity data: Stenger et al., Arzneim.-Forsch. 18, 1536 (1968).

Chemical structure

Properties

Colorless, hygroscopic, practically odorless liquid. d415 1.1274; bp 285°; bp14 165°. mp 7.2°. Viscosity at 20°: 47.8 cP; nD15 1.4578. Misc with water, alcohol, benzene, toluene; sparingly sol in ether. Practically insol in petr ether. LD50 in mice, rats (g/kg): 21, 15-22 orally; 7.3-9.5, 11.7 i.v. (Stenger).

Use

In various plastics to increase pliability; in air disinfection.