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Dimethyl ether Structure

Dimethyl ether

Chemical Properties

Melting point −141 °C(lit.)
Boiling point −24.8 °C(lit.)
Density  1.617
vapor density  1.62 (vs air)
vapor pressure  >760 mm Hg ( 25 °C)
refractive index  1.2984
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.
Odor Chloroform-like; sweet.
explosive limit 27%
Odor Threshold 500ppm
Water Solubility  soluble
Merck  6071
BRN  1730743
Dielectric constant 5.0(25℃)
Stability Stable. Extremely flammable. Note low flash point. May form explosive mixtures with air. May form peroxides during prolonged storage.
LogP 0.07 at 25℃
CAS DataBase Reference 115-10-6(CAS DataBase Reference)
NIST Chemistry Reference Dimethyl ether(115-10-6)
EPA Substance Registry System Dimethyl ether (115-10-6)

Safety Information

Hazard Codes  F+
Risk Statements  12
Safety Statements  9-16-33
RIDADR  UN 1033 2.1
WGK Germany  1
RTECS  PM4780000
4.5-31
Autoignition Temperature 662 °F
HazardClass  2.1
HS Code  2909199090
Hazardous Substances Data 115-10-6(Hazardous Substances Data)

MSDS

Usage And Synthesis

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