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2-METHYLPENTANE
ICSC: 1262
Peer-Review Status: 15.03.1995 Validated
Isohexane
Dimethylpropylmethane 
CAS #: 107-83-5 RTECS #: SA2985000
UN #: 1208 (hexanes)
EINECS #: 203-523-4
    Formula: C6H14 / CH3CH(CH3)(CH2)2CH3
Molecular mass: 86.2

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Highly flammable.  NO open flames, NO sparks and NO smoking.  Use powder, foam, carbon dioxide. 
EXPLOSION Vapour/air mixtures are explosive.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE      
Inhalation   Use ventilation, local exhaust or breathing protection.  Fresh air, rest. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes   Wear safety spectacles.  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.  Rinse mouth. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer.   
EC Classification
 
UN Classification
UN Hazard Class: 3; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-30S1208 or 30GF1-I+II.
NFPA Code: H1; F3; R0. 
Fireproof. Separated from strong oxidants. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible. As a result of flow, agitation, etc., electrostatic charges can be generated. 

Chemical dangers
Reacts violently with oxidants. This generates fire and explosion hazard. Attacks plastics. 

Occupational exposure limits
TLV: 500 ppm as TWA; 1000 ppm as STEL; (ACGIH 2008).
MAK: 500 ppm, 1800 mg/m³; Peak limitation category: II(2); Pregnancy risk group: D; (DFG 2008). 

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour and through the skin. 

Inhalation risk
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. 

Effects of short-term exposure
 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 60°C
Melting point: -153°C
Relative density (water = 1): 0.65
Solubility in water: none
Vapour pressure, kPa at 20°C: 23
Relative vapour density (air = 1): 3.0
Flash point: -32°C c.c.
Auto-ignition temperature: 264°C
Explosive limits, vol% in air: 1.0-7 
 

NOTES
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, Emergency Response.
Card has been partially updated in February 2009: see Occupational Exposure Limits, Fire fighting. 

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