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DIMETHYL ETHER
(cylinder)
ICSC: 0454
Peer-Review Status: 10.08.2002 Validated
Methyl ether
Oxybismethane
Wood ether
Methoxymethane 
CAS #: 115-10-6 RTECS #: PM4780000
UN #: 1033
EC #: 603-019-00-8
EINECS #: 204-065-8
    Formula: C2H6O / CH3OCH3
Molecular mass: 46.08

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. Unconciousness.  Use 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.  Wear 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 refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.   

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Remove all ignition sources.   
EC Classification
Symbol: F+; R: 12; S: (2)-9-16-33 
UN Classification
UN Hazard Class: 2.1 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-21S1033.
NFPA Code: H2; F4; R1. 
Fireproof. Cool. 

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. The gas is heavier than air 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
 

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 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. 

Effects of long-term or repeated exposure
 


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

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
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations