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ISOAMYL ALCOHOL
ICSC: 0798
Peer-Review Status: 10.09.1997 Validated
3-Methyl-1-butanol
Isopentyl alcohol
Isobutylcarbinol 
CAS #: 123-51-3 RTECS #: EL5425000
UN #: 1105
EC #: 603-006-00-7
EINECS #: 204-633-5
    Formula: C5H12O / (CH3)2CHCH2CH2OH
Molecular mass: 88.2

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Flammable.  NO open flames, NO sparks and NO smoking.  Use alcohol-resistant foam, powder, carbon dioxide. 
EXPLOSION Above 45°C explosive vapour/air mixtures may be formed.  Above 45°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 Cough. Dizziness. Headache. Nausea. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Dry skin. Redness. Roughness. Pain.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear safety spectacles, face shield 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 Abdominal pain. Burning sensation in the chest and stomach. Headache. Nausea. Unconsciousness. Vomiting. Weakness.  Do not eat, drink, or smoke during work.  Rinse mouth. Give a slurry of activated charcoal in water to drink. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Collect leaking and spilled liquid in sealable containers as far as possible. Wash away remainder with plenty of water.   
EC Classification
Symbol: Xn; R: 10-20-37-66; S: (2)-46; Note: C 
UN Classification
UN Hazard Class: 3; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-30GF1-II.
NFPA Code: H1; F2; R0. 
Fireproof. Separated from strong oxidants. 

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

Physical dangers
 

Chemical dangers
Reacts violently with strong oxidants. Reacts with reducing agents. Reacts violently with hydrogen trisulfide. This generates explosion hazard. 

Occupational exposure limits
TLV: 100 ppm as TWA; 125 ppm as STEL; (ACGIH 2004).
MAK: 100 ppm, 370 mg/m³; Peak limitation category: II(2); Pregnancy risk group: C; (DFG 2004). 

Routes of exposure
The substance can be absorbed into the body by inhalation 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, skin and respiratory tract. Ingestion could cause effects on the central nervous system. 

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


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 132°C
Melting point: -117°C
Relative density (water = 1): 0.8
Solubility in water, g/100ml: 2.5
Vapour pressure, kPa at 20°C: 0.4
Relative vapour density (air = 1): 3.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 45°C c.c., 55°C o.c.
Auto-ignition temperature: 350°C
Explosive limits, vol% in air: 1.2-9 (at 100°C)
Octanol/water partition coefficient as log Pow: 1.42  
 

NOTES
Card has been partly updated in October 2004.
See sections Occupational Exposure Limits, EU classification, Emergency Response. 

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
       ISOAMYL ALCOHOL (JECFA Evaluation)