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methyl carbitol

Product name methyl carbitol
Synonyms diethylene glycol methyl ether
GOST no data
CAS 111-77-3

Methyl carbitol CH3(OCH2CH2)2OH is a colorless, volatile, flammable, hygroscopic liquid with a weak glycol odor. It is fully miscible in water and most organic solvents such as alcohols, chloroform, carbon tetrachloride, benzene, toluene and so on. Aliphatic hydrocarbons have a low solubility in methyl carbitol.

As a monomethyl diethylene glycol ether methyl carbitol possess both alcohol and ether chemical properties. It reacts with alkali metals releasing hydrogen to give corresponding salts. It can be also esterified by action of carboxilic or inorganic acids. Being treated with ethylene oxide at 150-200°C in the presence of alkaline catalysts methyl carbitol forms methyl ethers of higher polyethylene glycols.

Methyl carbitol is a toxic compound. Its toxisity is similar to glycols action. The result of ingestion is central nervous system and kidney injury.


Industrially methyl carbitol is produced jointly with methyl cellosolve (ethylene glycol monomethyl ether) by the reaction of methanol with ethylene oxide at 150-190°C and pressure 2-3MPa in the presence of 0.01-0.1% sodium hydroxide NaOH as a catalyst:

CH3OH + 2(CH2CH2)O --> CH3(OCH2CH2)2OH

Resulting mixture consists of monomethyl ethers of mono-, di- and tri- ethylene glycols and can be separated by following rectification.


  • as a high-boiling polar solvent;
  • as an effective extractive agent for mixtures separation;
  • as an additive for separation of mixtures by azeotrope distillation;
  • as an absorbent for gases drying;

  • Manufacturer(s) no data
    Chemical structure of methyl carbitol

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