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CARBON DIOXIDE ICSC: 0021
Date of Peer Review: October 1994

Carbonic acid gas
Carbonic anhydride
CAS # 124-38-9 CO2
RTECS # FF6400000 Molecular mass: 44.0
UN # 1013
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION Containers may burst in the heat of a fire!

In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.
EXPOSURE


Inhalation Dizziness. Headache. Elevated blood pressure. Tachycardia.
Ventilation.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin ON CONTACT WITH LIQUID: FROSTBITE.
Cold-insulating gloves. Protective clothing.
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention.
Eyes On contact with liquid: frostbite.
Safety goggles or face shield.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion


SPILLAGE DISPOSAL PACKAGING & LABELLING
Ventilation. NEVER direct water jet on liquid. Personal protection: self-contained breathing apparatus.
EU Classification
UN Classification
UN Hazard Class: 2.2

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-20S1013
Fireproof if in building. Cool.
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 2004

SEE IMPORTANT INFORMATION ON BACK


CARBON DIOXIDE ICSC: 0021
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
ODOURLESS, COLOURLESS COMPRESSED LIQUEFIED GAS.

PHYSICAL DANGERS:
The gas is heavier than air and may accumulate in low ceiling spaces causing deficiency of oxygen. Build up of static electricity can occur at fast flow rates and may ignite any explosive mixtures present. Free-flowing liquid condenses to form extremely cold dry ice.

CHEMICAL DANGERS:
The substance decomposes on heating above 2000C producing toxic carbon monoxide. Reacts violently with strong bases and alkali metals. Various metal dusts such as magnesium, zirconium, titanium, aluminium, chromium and manganese are ignitable and explosive when suspended and heated in carbon dioxide.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5000 ppm as TWA; 30000 ppm as STEL; (ACGIH 2004).
MAK: 5000 ppm, 9100 mg/m; Peak limitation category: II(2); (DFG 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
On loss of containment this liquid evaporates very quickly causing supersaturation of the air with serious risk of suffocation when in confined areas.

EFFECTS OF SHORT-TERM EXPOSURE:
Inhalation of high concentrations of this gas may cause hyperventilation and unconciousness. Rapid evaporation of the liquid may cause frostbite.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the metabolism.
PHYSICAL PROPERTIES
Sublimation point: -79C
Solubility in water, ml/100 ml at 20C: 88
Vapour pressure, kPa at 20C: 5720
Relative vapour density (air = 1): 1.5
ENVIRONMENTAL DATA

NOTES
Carbon dioxide is given off by many fermentation processes (wine, beer, etc.) and is a major component of flue gas. High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check oxygen content before entering area. No odour warning if toxic concentrations are present. Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. Other UN classification numbers for transport are: UN 1845 carbon dioxide, dry ice; UN 2187 carbon dioxide refrigerated liquid.
Card has been partly updated in April 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 2004
See Also:
        Carbon dioxide gas (CHEMINFO)
        Carbon dioxide solid (CHEMINFO)