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PROPIONIC ACID ICSC: 0806
October 1997
Ethylformic acid
Methylacetic acid
Propanoic acid
Ethanecarboxylic acid

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CAS # 79-09-4 C 3H 6O 2 / CH 3CH 2COOH
RTECS # UE5950000 Molecular mass: 74.1
UN # 1848
EC # 607-089-00-0

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID /    FIRE FIGHTING   
FIRE Flammable.
NO open flames, NO sparks, and NO smoking.
Powder, alcohol-resistant foam, water spray, 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.
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.
Face shield.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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 plenty 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 and remove to safe place. Do NOT let this chemical enter the environment. (extra personal protection: chemical protection suit including self-contained breathing apparatus).
C Symbol
R: 34
S: 1/2-23-36-45
Note: B
UN Hazard Class: 8
UN Pack Group: III
Do not transport with food and feedstuffs.

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

IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
OILY COLOURLESS LIQUID , WITH PUNGENT ODOUR.

CHEMICAL DANGERS:
The substance is a medium strong acid. Reacts with bases, strong oxidants and amines causing fire and explosion hazard. Attacks many metals forming flammable/explosive gas (hydrogen -- see ICSC # 0001).

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 10 ppm; 30 mg/m 3 (ACGIH 1997). MAK: 10 ppm; 30 mg/m 3; (1996)
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, the skin, and the respiratory tract.


PHYSICAL PROPERTIES
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

ENVIRONMENTAL DATA
The substance is harmful to aquatic organisms.

NOTES
Luprosil, Prozoin, Tenox P Grain Preservative and Tenox P are trade names.

IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission

© IPCS 1999
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.



Updated by AS. Approved by EC. Last update: 10.10.2000.