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BUTYRIC ACIDICSC: 1334
November 1998
CAS #: 107-92-6n-Butanoic acid
Ethylacetic acid
1-Propanecarboxylic acid
Butanic acid
UN #: 2820
EINECS #: 203-532-3

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Above 72°C explosive vapour/air mixtures may be formed.  NO open flames.  Above 72°C use a closed system and ventilation.  Use water spray, powder, alcohol-resistant foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

 AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Sore throat. Cough. Burning sensation. Shortness of breath. Laboured breathing. Symptoms may be delayed. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. 
Skin Pain. Redness. Blisters. Skin burns.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Pain. Redness. Severe deep burns. Loss of vision.  Wear face shield or eye protection in combination with breathing protection.  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. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. Cautiously neutralize remainder with soda lime. Then wash away with plenty of water. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 8; UN Pack Group: III 

STORAGE
Separated from strong oxidants, strong bases and food and feedstuffs. 
PACKAGING
Do not transport with food and feedstuffs. 
BUTYRIC ACID ICSC: 1334
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OILY LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
The substance is a medium strong acid. Reacts with bases and strong oxidants. Attacks many metals. 

Formula: C4H8O2 / CH3CH2CH2COOH
Molecular mass: 88.1
Boiling point: 164°C
Melting point: -7.9°C
Relative density (water = 1): 0.96
Solubility in water: miscible
Vapour pressure, Pa at 20°C: 57
Relative vapour density (air = 1): 3
Flash point: 72°C c.c.
Auto-ignition temperature: 452°C
Explosive limits, vol% in air: 2-10
Octanol/water partition coefficient as log Pow: 0.79  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is corrosive 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
 

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

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    See Also:
       Toxicological Abbreviations
       BUTYRIC ACID (JECFA Evaluation)