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PROPIONIC ACID
ICSC: 0806
Peer-Review Status: 10.09.1997 Validated
Ethylformic acid
Methylacetic acid
Propanoic acid
Ethanecarboxylic acid 
CAS #: 79-09-4 RTECS #: UE5950000
UN #: 1848
EC #: 607-089-00-0
EINECS #: 201-176-3
    Formula: C3H6O2 / CH3CH2COOH
Molecular mass: 74.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Flammable.  NO open flames, NO sparks and NO smoking.  Use water spray, powder, alcohol-resistant foam, carbon dioxide. 
EXPLOSION Above 54°C explosive vapour/air mixtures may be formed.  Above 54°C use a closed system, ventilation and explosion-proof electrical equipment.  In case of fire: keep drums, etc., cool by spraying with water. 
 
EXPOSURE   AVOID ALL CONTACT!   
Inhalation Burning sensation. Cough. Shortness of breath. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Refer for medical attention. 
Skin Skin burns. Pain. Blisters.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain. Blurred vision. Severe deep 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 Abdominal cramps. Burning sensation. Nausea. Shock or collapse. Sore throat. Vomiting.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment. Personal protection: chemical protection suit including self-contained breathing apparatus.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: C; R: 34; S: (1/2)-23-36-45; Note: B 
UN Classification
UN Hazard Class: 8; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-642.
NFPA Code: H3; F2; R0. 
Fireproof. Separated from strong oxidants, strong bases and food and feedstuffs. 

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

Physical dangers
 

Chemical dangers
The substance is a medium strong acid. Reacts with bases, strong oxidants and amines. This generates fire and explosion hazard. Attacks many metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). 

Occupational exposure limits
 

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

Inhalation risk
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. 

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

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 141°C
Melting point: -21°C
Relative density (water = 1): 0.99
Solubility in water: very good
Vapour pressure, Pa at 20°C: 390
Relative vapour density (air = 1): 2.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 54°C c.c., 57°C o.c.
Auto-ignition temperature: 485°C
Explosive limits, vol% in air: 2.1-12
Octanol/water partition coefficient as log Pow: 0.33  
The substance is harmful to aquatic organisms. 

NOTES
Luprosil, Prozoin, Tenox P Grain Preservative and Tenox P are trade names.
Card has been partially updated in March 2008: see Occupational Exposure Limits, Ingestion First Aid. 

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
       Propionic acid (FAO Nutrition Meetings Report Series 40abc)
       PROPIONIC ACID (JECFA Evaluation)