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3-METHYLBUTANALICSC: 1748
November 2009
CAS #: 590-86-3Isovaleraldehyde
Isopentaldehyde
Isopentanal
UN #: 2058
EINECS #: 209-691-5

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Highly flammable.  Vapour/air mixtures are explosive.  NO open flames, NO sparks and NO smoking.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.  Use dry sand, carbon dioxide, dry powder. NO water.  In case of fire: keep drums, etc., cool by spraying with water. 

   
  SYMPTOMS ACUTE HAZARDS FIRST AID
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 CLASSIFICATION & 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. 

According to UN GHS Criteria

flam;flamecancer;health haz
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 

Transportation
UN Classification
UN Hazard Class: 3; UN Pack Group: II 

STORAGE
Fireproof. Well closed. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 
PACKAGING
 
3-METHYLBUTANAL ICSC: 1748
PHYSICAL & CHEMICAL INFORMATION

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. 

Formula: C5H10O/(CH3)2CHCH2CHO
Molecular mass: 86.1
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 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
 

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. 

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 long-term or repeated exposure
 


Occupational exposure limits
 

ENVIRONMENT
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
  EC Classification
 

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    See Also:
       Toxicological Abbreviations