Dimethyl ether

Abbreviation DME
Plant Niigata
Main Applications Aerosol propellant
Existing Chemical Substance No. (2)-360


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℃)
Viscosity (CP 25℃) No data
Solubility 7.0g/100g of water (18℃)
35wt% (24℃ 5 atmospheric pressure)
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

Photo: Transport tank container

Inquiries Concerning Products

Green Energy & Chemicals Business Sector
C1 Chemicals Division
Organic Chemicals Department 
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