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ACETIC ACID
ICSC: 0363
Peer-Review Status: 06.05.2010 Validated
Glacial acetic acid
Ethanoic acid
Ethylic acid
Methanecarboxylic acid 
CAS #: 64-19-7 RTECS #: AF1225000
UN #: 2789
EC #: 607-002-00-6
EINECS #: 200-580-7
    Formula: C2H4O2 / CH3COOH
Molecular mass: 60.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Flammable.  NO open flames, NO sparks and NO smoking.  Use powder, alcohol-resistant foam, water spray, carbon dioxide. 
EXPLOSION Above 39°C explosive vapour/air mixtures may be formed. Risk of fire and explosion on contact with strong oxidants.  Above 39°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 Sore throat. Cough. Burning sensation. Headache. Dizziness. Shortness of breath. Laboured breathing.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Refer immediately for medical attention. 
Skin Pain. Redness. Skin burns. Blisters.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Rinse skin with plenty of water or shower for at least 15 minutes. Refer immediately for medical attention. 
Eyes Redness. Pain. Severe burns. Loss of vision.  Wear face shield or eye protection in combination with breathing protection.  Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention. 
Ingestion Sore throat. Burning sensation. Abdominal pain. Vomiting. Shock or collapse.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. If within a few minutes after ingestion, one small glass of water may be given to drink. Refer immediately for medical attention. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Remove all ignition sources. Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable containers. Cautiously neutralize spilled liquid with sodium carbonate only under the responsibility of an expert.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: C; R: 10-35; S: (1/2)-23-26-45; Note: B 
UN Classification
UN Hazard Class: 8; UN Subsidiary Risks: 3; UN Pack Group: II 
GHS Classification
Signal: Danger
Flammable liquid and vapour
Harmful if inhaled (vapour)
Harmful in contact with skin
May be harmful if swallowed
Causes severe skin burns and eye damage
May cause respiratory irritation
Causes damage to the respiratory tract through prolonged or repeated exposure if inhaled
Harmful to aquatic life 
flam;flamecorrexcl mark;warncancer;health haz

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H3; F2; R0.  Fireproof. Separated from food and feedstuffs, strong oxidants, strong acids and strong bases. Store only in original container. Well closed. Keep in a well-ventilated room. Store in an area without drain or sewer access. 

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

Physical dangers
No data. 

Chemical dangers
The substance is a weak acid. Reacts violently with strong oxidants. This generates fire and explosion hazard. Reacts violently with strong bases, strong acids and many other compounds. Attacks some forms of plastic, rubber and coatings. 

Occupational exposure limits
TLV: 10 ppm as TWA; 15 ppm as STEL; (ACGIH 2010).
MAK (respirable fraction): 10 ppm, 25 mg/m³; Peak limitation category: I(2); Pregnancy risk group: C; (DFG 2010).
EU OEL ( selected): 10ppm, 25mg/m³ as TWA;. 

Routes of exposure
Serious local effects by all routes of exposure. 

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. Corrosive on ingestion. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. Lungs may be affected by repeated or prolongated exposure to an aerosol of this substance. Risk of tooth erosion upon repeated or prolongated exposure to an aerosol of this substance. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 118°C
Melting point: 16.7°C
Relative density (water = 1): 1.05
Solubility in water: miscible
Vapour pressure, kPa at 20°C: 1.5
Relative vapour density (air = 1): 2.1
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.02
Flash point: 39°C c.c.
Auto-ignition temperature: 485°C
Explosive limits, vol% in air: 6.0-17
Octanol/water partition coefficient as log Pow: -0.17  
The substance is harmful to aquatic organisms. 

NOTES
UN number 2789 is for acetic acid, glacial or acetic acid solution, more than 80% acid by mass.
Other UN numbers: UN 2790 acetic acid solution (10-80% acetic acid); UN hazard class 8, packing group II-III. 

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
       Acetic acid (FAO Nutrition Meetings Report Series 40abc)
       ACETIC ACID (JECFA Evaluation)