1800. Diethylene Glycol Monoethyl Ether

Nomenclature

CAS number: 111-90-0
2-(2-Ethoxyethoxy)ethanol; diethylene glycol ethyl ether; ethyl digol; Carbitol (Dow).
C6H14O3; mol wt 134.17.
C 53.71%, H 10.52%, O 35.77%.

Description and references

Prepn from ethylene oxide and 2-ethoxyethanol in the presence of SO2: E. C. Britton, A. R. Sexton, US 2807651 (1957 to Dow). Toxicity data: Smyth, Carpenter, J. Ind. Hyg. Toxicol. 30, 63 (1948).

Chemical structure

Properties

Very hygroscopic liquid, mild odor, bp 201°. fp -43°. d425 0.9855, d2020 0.990. nD20 1.4273. Flash pt, closed cup: 216°F (102°C). Partition coefficient (octanol/water): -0.54. Vapor pressure (20°): 0.07 mmHg. Viscosity (25°): 4.5 cP. Sol in water. Miscible with acetone, benzene, chloroform, ethanol, ether, pyridine, etc.: W. M. Jackson, J. S. Drury, Ind. Eng. Chem. 51, 1491 (1959). LD50 orally in rats: 8.69 g/kg (Smyth, Carpenter).

Derivative

Acetate.

Nomenclature

CAS number: 112-15-2
C8H16O4; mol wt 176.21.
C 54.53%, H 9.15%, O 36.32%.

Properties

Liquid, bp 218.5°. mp -25°. d2020 1.0114. nD20 1.4213. Flash pt, open cup: 110°C. Miscible with water, alc, ether, most oils. LD50 orally in rats: 11 g/kg (Smyth, Carpenter).

Use

As solvent for cellulose esters, in lacquer and thinner formulations, in quick-drying varnishes and enamels, for dyestuffs and wood stains. Coupling agent and solvent in cleaners. Acetate is used as a solvent and plasticizer for cellulose esters, gums, resins, etc.