Ethyl methyl ether

  • Methyl ethyl ether
  • Methoxyethane
Formula
C2H5OCH3
Structure
Description
A clear colorless gas with a medicine-like odor.

Registry Numbers and Inventories.
CAS
540-67-0
EC Index Number
603-020-00-3
RTECS
KO0260000
RTECS class
Other
UN (DOT)
1039
Merck
12,3874
Beilstein/Gmelin
1730785
Beilstein Reference
4-01-00-01314
New Zealand
Listed

Properties.
Formula
C3H8O
Formula mass
60.1
Melting point, °C
-113
Boiling point, °C
7
Vapor pressure, mmHg
1440 (25 C)
Vapor density (air=1)
2.1
Critical temperature
164.7
Critical pressure
43.4
Density
0.7252 g/cm3 (0 C)
Solubility in water
Soluble
Surface tension
17.54 g/s2 (7.9 C)
Refractive index
1.342 (4 C)
Partition coefficient, pKow
0.45
Heat of vaporization
24.5 kJ/mol
Heat of combustion
-2105 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles. Always wear thermal protective clothing when handling refrigerated/cryogenic liquids.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to disperse vapors and dilute standing pools of liquid.
Stability
No data.
Incompatibilities
May react violently with strong oxidizing agents.

Fire.
Flash Point,°C
-58
Autoignition, °C
190
Upper exp. limit, %
10.1
Lower exp. limit, %
2
Fire fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may spread fire. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use alcohol foam, dry chemical or carbon dioxide.
Fire potential
EXTREMELY FLAMMABLE.
Hazards
Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Containers may explode when heated. Ruptured cylinders may rocket.
Health
1
 
Flammability
4
 
 
Reactivity
1
 

Health.
Exposure effects
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.
   Ingestion
Ether is irritating to mucous membranes and vomiting might be expected after ingestion. Anorexia has been reported in patients with deliberate ether abuse.
   Inhalation
Ether is irritating to mucous membranes. Cough and laryngeal spasm have been reported.
   Skin
Ether will defat the skin with multiple exposures.
   Eyes
Excessive salivation has been reported. Prolonged exposure to high vapor concentrations may cause eye injury.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Clothing frozen to the skin should be thawed before being removed. In case of contact with liquefied gas, thaw frosted parts with lukewarm water
   Eyes
Flush with running water for at least 20 minutes.

Transport.
UN number
1039
Response guide
Hazard class
2.1
Std. Transport #
4905744