Properties of Diethylene Glycol Monomethyl Ether

Diethylene glycol monomethyl ether

CAS 111-77-3

Melting point: −69°C (−92°F; 204 K);

Boiling point: 194°C (381°F; 467 K);

Density: 1.02; Vapor density: 4.14 (vs. air);

Vapor pressure: 0.2 mmHg (20°C);

Refractive index: 1.4;

Flash point: 96°C (205°F; 369 K);

Storage conditions: Store below +30°C;

Acidity constant (pKa): 14.37 ± 0.10 (predicted);

Physical form: Transparent, viscous liquid;

Color: Transparent.

Diethylene glycol monomethyl ether is a colorless liquid at room temperature and atmospheric pressure. It exhibits significant hygroscopicity and an aromatic odor, and is soluble in water as well as common organic solvents. It serves as a fundamental raw material and reagent in organic synthesis and fine chemical production; for instance, it can be used as an extractant, an additive, or a reaction solvent, and finds application in the preparation of products such as dyes and inks.

Production method: Obtained by the reaction of ethylene glycol monomethyl ether with ethylene oxide.

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