Dimethyl ether
| Abbreviation | DME |
|---|---|
| Plant | Niigata |
| Main Applications | Aerosol propellant |
| Existing Chemical Substance No. | （2）-360 |
Properties
| Chemical Formula | CH3OCH3 |
|---|---|
| Molecular Weight | 46.07 |
| Appearance | Colorless gas |
| Odor | Slightly sweet smell |
| Specific Gravity (25℃/4℃) | 0.661 (20℃ liquid) |
| Boiling Point (℃ 760mmHg) | -24.9 |
| Freezing Point (℃ 760mmHg) | -141.5 |
| Flash Point (℃ Tagliabue (Tag) Closed Cup) | -41.1 |
| Ignition Temperature (℃) | 350 |
| Flammability Limits (vol%) | 3.4～27 |
| Vapour Pressure (mmHg 25℃) | 1,930（0℃） 3,800（20.8℃） |
| Viscosity (CP 25℃) | No data |
| Solubility | 7.0g/100g of water (18℃) 35wt% (24℃ 5 atmospheric pressure) |
| Stability& Reactivity |
Thermally stable under inert gas atmosphere even under high temperatures of 400℃. Also stable in neutral and diluted acidic and alcaline solutions. |
Applicable Laws
| Industrial Safety and Health Law | Flammable gas |
|---|---|
| High Pressure Gas | High pressure gas, flammable gas, liquefied gas |
| Fire Service Law | － |
| Poisonous and Deleterious Substances Control Law | － |
| Law on the Prevention of Marine Pollution and Maritime Disaster | － |
| Ship Safety Law | Hazardous material, high pressure gas |
| Civil Aeronautics Law | Explosives, high pressure gas |
| Other Major Applicable Laws | Cosmetic Quality Standard (Standards on Cosmetics Raw Materials) |
Classification of Hazard
| Classification | High pressure gas, flammable gas |
|---|---|
| Hazardous | High pressure liquefied gas and flammable |
| Harmful | Very weak narcotic effect; discomfort under exposure to high concentration, e.g. 7.5%; without apparent physical change; direct contact with liquefied gas will cause skin lesions or frost bites. |
Product Standard
| Purity (wt%) | 99.9 or greater |
|---|---|
| Carbon Dioxide (wt%) | 0.1 or less |
| Methyl formate (wt%) | 0.01 or less |
| Methanol (wt%) | 0.01 or less |
| Water Content (wt%) | 0.002 or less |
| Vapour Pressure (MPa) | 0.41±0.02（20℃） |
| Specific Gravity (20/4℃) | 0.67±0.01 |
Inquiries Concerning Products
Green Energy & Chemicals Business Sector
C1 Chemicals Division
Organic Chemicals Department
TEL：+81-3-3283-4779 / FAX：+81-3-3214-0930