Dimethyl ether

Not to be confused with dimethoxyethane.

Dimethyl Ether

Skeletal formula of dimethyl ether with all implicit hydrogens shown Ball and stick model of dimethyl ether
Names
IUPAC name Methoxymethane
Preferred IUPAC name Methoxymethane
Other names Dimethyl ether R-E170 Demeon Dimethyl oxide Dymel A Methyl ether Methyl oxide Mether Wood ether 2-oxapropane
Identifiers
CAS Number	115-10-6 Y
3D model (JSmol)	Interactive image
Abbreviations	DME Me2O
Beilstein Reference	1730743
ChEBI	CHEBI:28887 Y
ChEMBL	ChEMBL119178 Y
ChemSpider	7956 Y
ECHA InfoCard	100.003.696
EC Number	204-065-8
KEGG	C11144 Y
MeSH	Dimethyl+ether
PubChem CID	8254
RTECS number	PM4780000
UNII	AM13FS69BX Y
UN number	1033
CompTox Dashboard (EPA)	DTXSID8026937
InChI InChI=1S/C2H6O/c1-3-2/h1-2H3 Y Key: LCGLNKUTAGEVQW-UHFFFAOYSA-N Y InChI=1/C2H6O/c1-3-2/h1-2H3 Key: LCGLNKUTAGEVQW-UHFFFAOYAU
SMILES COC
Properties
Chemical formula	C2H6O
Molar mass	46.069 g·mol−1
Appearance	Colorless gas
Odor	Ethereal
Density	2.1146 kg m−3 (gas, 0 °C, 1013 mbar) 0.735 g/mL (liquid, −25 °C)
Melting point	−141 °C; −222 °F; 132 K
Boiling point	−24 °C; −11 °F; 249 K
Solubility in water	71 g/L (at 20 °C (68 °F))
log P	0.022
Vapor pressure	592.8 kPa
Magnetic susceptibility (χ)	−26.3×10−6 cm3 mol−1
Dipole moment	1.30 D
Thermochemistry
Heat capacity (C)	65.57 J K−1 mol−1
Std enthalpy of formation (ΔfH⦵298)	−184.1 kJ mol−1
Std enthalpy of combustion (ΔcH⦵298)	−1460.4 kJ mol−1
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H220
Precautionary statements	P210, P377, P381, P403
NFPA 704 (fire diamond)	2 4 1
Flash point	−41 °C (−42 °F; 232 K)
Autoignition temperature	350 °C (662 °F; 623 K)
Explosive limits	27 %
Safety data sheet (SDS)	≥99% Sigma-Aldrich
Related compounds
Related ethers	Diethyl ether Polyethylene glycol
Related compounds	Ethanol Methanol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Dimethyl ether (DME; also known as methoxymethane) is the organic compound with the formula CH₃OCH₃, (sometimes ambiguously simplified to C₂H₆O as it is an isomer of ethanol). The simplest ether, it is a colorless gas that is a useful precursor to other organic compounds and an aerosol propellant that is currently being demonstrated for use in a variety of fuel applications.

Dimethyl ether was first synthesised by Jean-Baptiste Dumas and Eugene Péligot in 1835 by distillation of methanol and sulfuric acid.