- Methyl ether
- Methyl oxide
Dimethyl ether is a colorless gas with a faint ethereal odor.
Rocket propellant, anesthetic, starter for gasoline engines in cold weather.
Registry Numbers and Inventories.
EC Index Number
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
3844 (20 C)
Vapor density (air=1)
0.6684 g/cm3 (20 C)
Solubility in water
0.009 cp (23 C)
16 g/s2 at -10 C.
1.3288 (-10 C)
Partition coefficient, pKow
Heat of fusion
Heat of vaporization
Heat of combustion
Hazards and Protection.
Protect against physical damage. Outside or detached storage is preferred. Inside storage should be in cool, well-ventilated, noncombustible location away from all possible sources of ignition. Keep in closed container away from heat and open flame.
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed. All five gallon pails and larger metal containers including tank cars and tank trucks should be grounded and/or bonded when material is transferred.
Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.
Wear positive pressure self-contained breathing apparatus (SCBA).
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Use of lithium aluminum hydride or aluminum hydride to dry methyl ethers may cause explosions, which are attributed to solubility of carbon dioxide. High concentrated of peroxides were found to be present.
When heated to decomposition it emits acrid smoke and irritating fumes.
Upper exp. limit, %
Lower exp. limit, %
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air.
Containers may explode. Vapors are heavier than air and may travel long distance to a source of ignition and flash back.
Irregular breathing, reduced body temperature, and low heart rate have been noted as early effects in industrial exposures. Exhaustion, dizziness, excitation, headache, CNS depression, and seizures have occurred. Ether readily passes the placental barrier. Concentrations in the fetus are expected to be the same as in the maternal blood.
Ether is irritating to mucous membranes and vomiting might be expected after ingestion. Anorexia has been reported in patients with deliberate ether abuse.
Ether is irritating to mucous membranes. Cough and laryngeal spasm have been reported.
Ether will defat the skin with multiple exposures.
Excessive salivation has been reported. Prolonged exposure to high vapor concentrations may cause eye injury.
This compound is a gas, therefore inhalation is the first route of exposure.
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
CAUTION: Exposure of skin to compressed gases may result in freezing of the skin. Treatment for frostbite may be necessary. Remove the victim from the source of contamination. IMMEDIATELY wash affected areas gently with COLD water (and soap, if necessary) while removing and isolating all contaminated clothing. Dry carefully with clean, soft towels. If symptoms such as inflammation or irritation develop, IMMEDIATELY call a physician or go to a hospital for treatment.
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
USCG CHRIS Code
Std. Transport #