|Preferred IUPAC name
|Systematic IUPAC name
2-Methoxyethyl ether; Di(2-methoxyethyl) ether; Diethylene glycol dimethyl ether
|Molar mass||134.18 g·mol−1|
|Melting point||−64 °C (−83 °F; 209 K)|
|Boiling point||162 °C (324 °F; 435 K)|
|EU classification||Toxic (T)
|R-phrases||R60 R61 R10 R19|
|Flash point||57 °C (135 °F; 330 K)|
|Diethylene glycol diethyl ether, ethylene glycol dimethyl ether|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is: / ?)(|
Diglyme, or bis(2-methoxyethyl) ether, is a solvent with a high boiling point. It is an organic compound which is the dimethyl ether of diethylene glycol. (The name "diglyme" is a portmanteau of "diglycol methyl ether.") It is a clear, colorless liquid with a slight ether-like odor. It is miscible with water, alcohols, diethyl ether, and hydrocarbon solvents.
Diglyme is mainly used as a solvent in organic reactions. It has the ability to chelate small cations, leaving anions more active. Therefore, reactions involving organometallic reagents, such as Grignard reactions or metal hydride reductions, may have significantly enhanced reaction rates.
- Merck Index, 11th Edition, 3148.