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ACETIC ACID ICSC: 0363
Date of Peer Review: October 1997

Glacial acetic acid
Ethanoic acid
Ethylic acid
Methanecarboxylic acid
CAS # 64-19-7 C2H4O2 / CH3COOH
RTECS # AF1225000 Molecular mass: 60.1
UN # 2789 (>80%)
EC Index # 607-002-00-6
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 39C explosive vapour/air mixtures may be formed.
Above 39C 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. Symptoms may be delayed (see Notes).
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Refer for medical attention.
Skin Pain. Redness. Blisters. Skin burns.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Redness. Pain. Severe deep burns. Loss of vision.
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 take to a doctor.
Ingestion Abdominal pain. Burning sensation. Diarrhoea. 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 liquid in sealable containers. Cautiously neutralize spilled liquid with sodium carbonate only under the responsibility of an expert. Wash away remainder with plenty of water. Personal protection: chemical protection suit including self-contained breathing apparatus.
Do not transport with food and feedstuffs.
EU 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
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-80GCF1-II
NFPA Code: H2; F2; R0;
Fireproof. Separated from food and feedstuffs. See Chemical Dangers. Keep in a well-ventilated room.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
ACETIC ACID ICSC: 0363
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID, WITH PUNGENT ODOUR.

CHEMICAL DANGERS:
The substance is a weak acid. Reacts violently with oxidants and bases. Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001). Attacks some forms of plastic, rubber and coatings.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 10 ppm as TWA, 15 ppm as STEL; (ACGIH 2004).
MAK: IIb (not established but data is available); (DFG 2004).
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 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance and the vapour is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of the vapor may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the gastrointestinal tract , resulting in digestive disorders including pyrosis and constipation.
PHYSICAL PROPERTIES
Boiling point: 118C
Melting point: 16.7C
Relative density (water = 1): 1.05
Solubility in water: miscible
Vapour pressure, kPa at 20C: 1.5
Relative vapour density (air = 1): 2.1
Relative density of the vapour/air-mixture at 20C (air = 1): 1.02
Flash point: 39C c.c.
Auto-ignition temperature: 427C
Explosive limits, vol% in air: 5.4-16
Octanol/water partition coefficient as log Pow: -0.31
ENVIRONMENTAL DATA
The substance is harmful to aquatic organisms.
NOTES
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered. Other UN numbers: UN 2790 acetic acid solution (10-80% acetic acid); UN hazard class 8. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005
See Also:
        Acetic acid (solutions greater than 10%) (CHEMINFO)
        Acetic acid (solutions of 10% or less) (CHEMINFO)