Dimethyl Ether What is dimethyl ether? Dimethyl ether is also called methoxymethane, dme gas or Dimethylaether, is an organic compound, a colorless and odorous flammable gas in the standard state, and its chemical formula is C2H6O or CH3-O-CH3. Relative vapor density (air is 1) 1.62, explosion range: 3.4鈥?7.0% (V/V), ignition temperature: 350掳C, dimethyl ether is easily soluble in water, website:http://www.julychem.com/dimethyl-ether/