Dimethyl ether
Synonym(s):DME;Methyl ether
- CAS NO.:115-10-6
- Empirical Formula: C2H6O
- Molecular Weight: 46.07
- MDL number: MFCD00008494
- EINECS: 204-065-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-03-14 15:18:28
![Dimethyl ether Structural](https://img.chemicalbook.in/CAS/GIF/115-10-6.gif)
What is Dimethyl ether?
Description
Dimethyl ether (DME), a colorless gas, is the simplest aliphatic ether. Also called methyl ether, it is currently produced by dehydrating methanol; but researchers have an eye on it for sustainable production from biogenic methane or biomass derived from cellulose or lignin.
DME is primarily used to make other small molecules such as acetic acid or dimethyl sulfate. It is also a spray-can propellant1 and a refrigerant to replace chlorofluorocarbons. It has been proposed as a cleaner-burning fuel than hydrocarbons.
Far beyond its terrestrial presence, DME was a significant recent discovery in outer space. In March, researchers at Leiden University (the Netherlands) used the Atacama Large Millimeter/submillimeter Array telescope to identify the molecule in a planet-forming disc in the constellation Ophiuchus, 444 light-years from Earth. With nine atoms, DME is the largest molecule yet observed in space.
Always optimistic, some astrobiologists have speculated that the presence of DME could be an indicator of life “out there”.
1. Erik Rotheim, the Norwegian inventor of the spray can, cited the use of DME in one of his patents, US 1,800,156, in 1931.
The Uses of Dimethyl ether
Dimethyl ether is used as a solvent in aerosol formulations.
Properties of Dimethyl ether
Melting point: | −141 °C(lit.) |
Boiling point: | −24.8 °C(lit.) |
Density | 1.617 |
Flash point: | -41°C |
solubility | Soluble in acetone, chloroform, ethanol (95%), ether, and 1 in 3 parts of water. Dimethyl ether is generally miscible with water, nonpolar materials, and some semipolar materials. For pharmaceutical aerosols, ethanol (95%) is the most useful cosolvent. Glycols, oils, and other similar materials exhibit varying degrees of miscibility with dimethyl ether. |
appearance | colorless gas |
Odor | Chloroform-like; sweet. |
Water Solubility | soluble |
Safety information for Dimethyl ether
Signal word | Danger |
Pictogram(s) |
![]() Flame Flammables GHS02 ![]() Gas Cylinder Compressed Gases GHS04 |
GHS Hazard Statements |
H220:Flammable gases H280:Gases under pressure |
Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P377:Leaking gas fire: Do not extinguish, unless leak can be stopped safely. P381:Eliminate all ignition sources if safe to do so. P410+P403:Protect from sunlight. Store in a well-ventilated place. |
Computed Descriptors for Dimethyl ether
Abamectin manufacturer
Vadilal Chemicals Limited
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