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. |
| Odor Threshold | 500ppm |
| explosive limit | 27% |
| 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) |
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 |
| F | 4.5-31 |
| Autoignition Temperature | 662 °F |
| HazardClass | 2.1 |
| HS Code | 2909199090 |
| Hazardous Substances Data | 115-10-6(Hazardous Substances Data) |
