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2,2-DIMETHYLPROPANEICSC: 1773
April 2014
CAS #: 463-82-1Tetramethylmethane
tert-Pentane
Neopentane
1,1,1-Trimethylethane
UN #: 2044
EINECS #: 207-343-7

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Extremely flammable.  Gas/air mixtures are explosive.  NO open flames, NO sparks and NO smoking.  Closed system, ventilation, explosion-proof electrical equipment and lighting.  Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with powder, foam, carbon dioxide.  In case of fire: keep cylinder cool by spraying with water. 

   
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Dizziness. Drowsiness. Headache.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin ON CONTACT WITH LIQUID: FROSTBITE.  Cold-insulating gloves.  First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. 
Eyes ON CONTACT WITH LIQUID: FROSTBITE.  Wear safety goggles or eye protection in combination with breathing protection.  Rinse with plenty of water (remove contact lenses if easily possible). Refer for medical attention. 
Ingestion      

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Evacuate danger area! Remove all ignition sources. Consult an expert! Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Shut off cylinder if possible. Isolate the area until the gas has dispersed. Remove gas with fine water spray. 

According to UN GHS Criteria

flam;flamecylinder;gasexcl mark;warn
DANGER
Extremely flammable gas
Contains gas under pressure; may explode if heated
May cause drowsiness or dizziness 

Transportation
UN Classification
UN Hazard Class: 2.1 

STORAGE
Fireproof. Cool. 
PACKAGING
 
2,2-DIMETHYLPROPANE ICSC: 1773
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS COMPRESSED GAS WITH CHARACTERISTIC ODOUR. 

Physical dangers
The gas is heavier than air and may travel along the ground; distant ignition possible. The gas mixes well with air, explosive mixtures are easily formed. 

Chemical dangers
Reacts with strong oxidants. 

Formula: C5H12
Molecular mass: 72.2
Boiling point: 9.5°C
Melting point: -16.6°C
Density (at 20°C): 0.61 g/cm³
Flash point: <-7°C
Auto-ignition temperature: 450°C
Explosive limits, vol% in air: 1.3 - 7.5
Solubility in water: none
Vapour pressure, kPa at 20°C: 146
Relative vapour density (air = 1): 2.5
Octanol/water partition coefficient as log Pow: 3.11  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
 

Effects of short-term exposure
Inhalation of high concentrations of the gas may cause depression of the central nervous system. Rapid evaporation of the liquid may cause frostbite. 

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 long-term or repeated exposure
 


Occupational exposure limits
TLV: 1000 ppm as TWA.
MAK: 3000 mg/m3, 1000 ppm; peak limitation category: II(2); pregnancy risk group: C.
EU-OEL: 3000 mg/m3, 1000 ppm as TWA 

ENVIRONMENT
 

NOTES
High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death.
Check oxygen content before entering the area. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: F+, N; R: 12-51/53; S: (2)-9-16-33-61 

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    See Also:
       Toxicological Abbreviations