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VALERIC ACIDICSC: 0346
May 2002
CAS #: 109-52-4Pentanoic acid
Propylacetic acid
1-Butanecarboxylic acid
n-Pentanoic acid
UN #: 3265
EINECS #: 203-677-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.  Above 86°C explosive vapour/air mixtures may be formed.  NO open flames.  Above 86°C use a closed system and ventilation.  Use water spray, powder, foam, carbon dioxide.   

 AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Burning sensation. Cough. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. Pain. Skin burns.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain. Severe burns.  Wear face shield.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burning sensation. Abdominal pain. Shock or collapse.  Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Do NOT let this chemical enter the environment. Collect leaking liquid in covered containers. Wash away remainder with plenty of water. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 8 

STORAGE
Separated from strong bases. 
PACKAGING
 
VALERIC ACID ICSC: 0346
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
The vapour is heavier than air. 

Chemical dangers
The substance is a weak acid. 

Formula: C5H10O2 / CH3(CH2)3COOH
Molecular mass: 102.1
Boiling point: 186-187°C
Melting point: -34.5°C
Relative density (water = 1): 0.94
Solubility in water, g/100ml: 2.4
Vapour pressure, kPa at 20°C: 0.02
Relative vapour density (air = 1): 3.52
Flash point: 86°C c.c.
Auto-ignition temperature: 400°C
Explosive limits, vol% in air: 1.6-7.6
Octanol/water partition coefficient as log Pow: 1.39  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. 

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
 

ADDITIONAL INFORMATION
  EC Classification
Symbol: C; R: 34-52/53; S: (1/2)-26-36-45-61 

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    See Also:
       Toxicological Abbreviations
       VALERIC ACID (JECFA Evaluation)