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3-METHYLBUTANAL
ICSC: 1748
Peer-Review Status: 24.11.2009 Validated
Isovaleraldehyde
Isopentaldehyde
Isopentanal 
CAS #: 590-86-3 RTECS #: ES3450000
UN #: 2058
EINECS #: 209-691-5
    Formula: C5H10O/(CH3)2CHCH2CHO
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 dry sand, carbon dioxide, dry powder. NO water. 
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 Sore throat. Cough.  Use ventilation. Avoid inhalation of mist.  Fresh air, rest. 
Skin Redness.  Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety spectacles.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Remove all ignition sources. Evacuate danger area! Consult an expert! 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. Collect leaking liquid in sealable containers. 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
Signal: Danger
Highly flammable liquid and vapour
Causes mild skin irritation
Causes eye irritation
May be harmful if swallowed and enters airways
Toxic to aquatic life 
flam;flamecancer;health haz

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H1; F3; R0.  Fireproof. Well closed. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 

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

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

Chemical dangers
Decomposes on heating. This produces irritating fumes. 

Occupational exposure limits
TLV not established.
MAK (not established):. 

Routes of exposure
 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of short-term exposure
The substance is irritating to the eyes and respiratory tract. The substance is mildly irritating to the skin. If swallowed the substance may cause vomiting and could result in aspiration pneumonitis. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 92.5°C
Melting point: -51°C
Relative density (water = 1): 0.8
Solubility in water, g/100ml: 2 (poor)
Vapour pressure, kPa at 20°C: 6.1
Relative vapour density (air = 1): 3.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.1
Flash point: -3°C c.c.
Auto-ignition temperature: 175°C
Explosive limits, vol% in air: 1.0-6.8
Octanol/water partition coefficient as log Pow: 1.31
Viscosity: 0.725 mm²/s at 20°C 
The substance is toxic to aquatic organisms. It is strongly advised not to let the chemical enter into the environment. 

NOTES
Health effects of exposure to the substance have not been investigated adequately. 

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