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BUTYRALDEHYDEICSC: 0403
Butanal
Butyl aldehyde
April 2006
CAS #: 123-72-8
UN #: 1129
EC Number: 204-646-6

  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 foam, powder, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

   
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness.  Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burning sensation.  Do not eat, drink, or smoke during work.  Rinse mouth. Rest. 

SPILLAGE DISPOSAL CLASSIFICATION & 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. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

flam;flameexcl mark;warn
DANGER
Highly flammable liquid and vapour
May be harmful if swallowed
May be harmful in contact with skin
Causes serious eye irritation
Harmful to aquatic life 

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

STORAGE
Fireproof. Separated from incompatible materials. See Chemical Dangers. Cool. Keep in the dark. Store in an area without drain or sewer access. 
PACKAGING
 
BUTYRALDEHYDE ICSC: 0403
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. 

Chemical dangers
The substance can presumably form explosive peroxides. The substance may polymerize. Reacts with amines, oxidants, strong bases and acids. 

Formula: C4H8O / CH3CH2CH2CHO
Molecular mass: 72.1
Boiling point: 74.8°C
Melting point: -99°C
Density: 0.8 g/cm³
Solubility in water, g/100ml: 7
Vapour pressure, kPa at 20°C: 12.2
Relative vapour density (air = 1): 2.5
Flash point: -12°C c.c.
Auto-ignition temperature: 230°C
Explosive limits, vol% in air: 1.9-12.5
Octanol/water partition coefficient as log Pow: 0.88  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. 

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 harmful to aquatic organisms. 

NOTES
Check for peroxides prior to distillation; eliminate if found. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: F; R: 11; S: (2)-9-29-33 

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    See Also:
       Toxicological Abbreviations
       BUTYRALDEHYDE (JECFA Evaluation)