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VALERALDEHYDE
ICSC: 1417
Peer-Review Status: 03.06.2002 Validated
n-Pentanal
Amyl aldehyde
Butyl formal 
CAS #: 110-62-3 RTECS #: YV3600000
UN #: 2058
EINECS #: 203-784-4
    Formula: C5H10O / CH3(CH2)3CHO
Molecular mass: 86.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Highly flammable.  NO open flames, NO sparks and NO smoking.  Use water spray, powder, alcohol-resistant foam, carbon dioxide. 
EXPLOSION Vapour/air mixtures are explosive.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE      
Inhalation Cough. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness.  Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
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 Nausea. Diarrhoea. Vomiting.  Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. 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. Do NOT let this chemical enter the environment. Ventilation. Remove all ignition sources. 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. Remove vapour with fine water spray.   
EC Classification
 
UN Classification
UN Hazard Class: 3; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-30GF1-I+II.
NFPA Code: H1; F3; R0. 
Fireproof. Well closed. Cool. 

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

Physical dangers
The vapour mixes well with air, explosive mixtures are easily formed. 

Chemical dangers
The substance can presumably form explosive peroxides. The substance may polymerize due to warming and under the influence of inorganic acids and bases. This generates fire or explosion hazard. 

Occupational exposure limits
TLV: 50ppm as TWA; (ACGIH 2001). 

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

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
The substance is irritating to the eyes, skin and respiratory tract. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 103°C
Melting point: -91°C
Relative density (water = 1): 0.8
Solubility in water, g/100ml at 20°C: 1.4 (moderate)
Vapour pressure, kPa at 20°C: 3.4
Relative vapour density (air = 1): 3
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.07
Flash point: 12°C o.c.
Auto-ignition temperature: 222°C
Explosive limits, vol% in air: 1.4-7.2
Octanol/water partition coefficient as log Pow: 1.31  
The substance is harmful to aquatic organisms. 

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
       VALERALDEHYDE (JECFA Evaluation)