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2-BUTANOL
ICSC: 0112
Peer-Review Status: 19.04.2005 Validated
sec-Butyl alcohol
Butan-2-ol
1-Methyl propanol
Methyl ethyl carbinol
Butylene hydrate 
CAS #: 78-92-2 RTECS #: EO1750000
UN #: 1120
EC #: 603-127-00-5
EINECS #: 201-158-5
    Formula: C4H10O / CH3CHOHCH2CH3
Molecular mass: 74.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Flammable.  NO open flames, NO sparks and NO smoking.  Use water spray, powder, foam, carbon dioxide. 
EXPLOSION Above 24°C explosive vapour/air mixtures may be formed.  Above 24°C use a closed system, ventilation and explosion-proof electrical equipment.  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE      
Inhalation Headache. Dizziness. Drowsiness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Dry skin.  Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Dizziness. Drowsiness.  Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. 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. Wash away remainder with plenty of water.   
EC Classification
Symbol: Xi; R: 10-36/37-67; S: (2)-7/9-13-24/25-26-46; Note: C 
UN Classification
UN Hazard Class: 3; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-30S1120-III.
NFPA Code: H1; F3; R0. 
Fireproof. Separated from strong oxidants and aluminium. 

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

Physical dangers
 

Chemical dangers
The substance can form explosive peroxides. Reacts with aluminium when heated to 100°C and strong oxidants such as chromium trioxide. This produces flammable/explosive gas (hydrogen - see ICSC 0001). Attacks some forms of plastic, rubber and coatings. 

Occupational exposure limits
TLV: 100ppm as TWA; (ACGIH 2005).
MAK (2b (not established but data is available)): (DFG 2004). 

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

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

Effects of short-term exposure
The substance is irritating to the eyes. Exposure far above the OEL could cause lowering of consciousness. If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis. 

Effects of long-term or repeated exposure
The liquid defats the skin. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 100°C
Melting point: -115°C
Relative density (water = 1): 0.81
Solubility in water, g/100ml at 20°C: 12.5
Vapour pressure, kPa at 20°C: 1.7
Relative vapour density (air = 1): 2.55
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.03
Flash point: 24°C c.c.
Auto-ignition temperature: 406°C
Explosive limits, vol% in air: 1.7-9.0
Octanol/water partition coefficient as log Pow: 0.6  
 

NOTES
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