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DIMETHYL ETHER ICSC: 0454
Date of Peer Review: October 2002

Methyl ether
Oxybismethane
Wood ether
Methoxymethane
(cylinder)
CAS # 115-10-6 C2H6O / CH3OCH3
RTECS # PM4780000 Molecular mass: 46.08
UN # 1033
EC # 603-019-00-8
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Extremely flammable.
NO open flames, NO sparks, and NO smoking. NO contact with hot surfaces.
Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out; in other cases extinguish with dry powder, carbon dioxide.
EXPLOSION Gas/air mixtures are explosive.
Closed system, ventilation, explosion-proof electrical equipment and lighting.
In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.
EXPOSURE


Inhalation Cough. Sore throat. Confusion. Drowsiness. Unconsciousness.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin ON CONTACT WITH LIQUID: FROSTBITE.
Cold-insulating gloves.
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Rinse skin with plenty of water or shower.
Eyes Redness. Pain.
Safety goggles, or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion
Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Remove all ignition sources. (Extra personal protection: filter respirator for organic gases and vapours.)
EU Classification
Symbol: F+
R: 12
S: (2-)-9-16-33
UN Classification
UN Hazard Class: 2.1

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-21S1033
NFPA Code: H2; F4; R1;
Fireproof. Cool.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK


DIMETHYL ETHER ICSC: 0454
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS GAS, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The gas is heavier than air and may travel along the ground; distant ignition possible, and may accumulate in lowered spaces causing a deficiency of oxygen.

CHEMICAL DANGERS:
The substance can form explosive peroxides under the influence of light and air. On combustion, forms irritating fumes. Reacts with oxidants.

OCCUPATIONAL EXPOSURE LIMITS:
EU OEL: as TWA 1000 ppm; 1920 mg/m; (EU 2002).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
On loss of containment, a harmful concentration of this gas in the air will be reached very quickly especially in confined spaces.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes and the respiratory tract. Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the central nervous system. Exposure could cause lowering of consciousness.

PHYSICAL PROPERTIES
Boiling point: -23.6C
Melting point: -141.5C
Relative density (water = 1): 0.61
Solubility in water, g/100 ml: 2.4
Relative vapour density (air = 1): 1.6
Flash point: Flammable Gas
Auto-ignition temperature: 350C
Explosive limits, vol% in air: 3.4-26.7
Octanol/water partition coefficient as log Pow: 0.1
ENVIRONMENTAL DATA

NOTES
Check oxygen content before entering area. High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check for peroxides prior to distillation; eliminate if found.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999