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LN7169929

1.0Msolutioninmethanol,SpcSeal , 115-10-6

Synonym(s):
DME;Methyl ether

CAS NO.:115-10-6

Empirical Formula: C2H6O

Molecular Weight: 46.07

MDL number: MFCD00008494

EINECS: 204-065-8

Update time: 2022-07-08

PRODUCT 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℃

Description and Uses

Dimethyl ether is a colorless compressed liquefied gas or liquid. Molecular weight= 46.08; Boilingpoint= 224℃; Freezing/Melting point = 2 141℃; Vaporpressure = 5200 hPa at 20℃; Flash point = flammable gas(241℃); Autoignition temperature= 350℃. Explosivelimits: LEL = 3.4%; UEL= 27.0%. Hazard Identification(based on NFPA-704 M Rating System): Health 2,Flammability 4, Reactivity 1. Soluble in water.

Methyl ether is used as an aerosol propellantand in refrigeration.

Safety

Symbol(GHS) 
GHS02,GHS04
Signal word  Danger
Hazard statements  H220-H280
Precautionary statements  P210-P377-P381-P410+P403
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

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