IPCS INCHEM Home
CARBON MONOXIDEICSC: 0023
April 2007
CAS #: 630-08-0Carbonic oxide
Carbon oxide
UN #: 1016
EINECS #: 211-128-3

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Extremely flammable. Heating will cause rise in pressure with risk of bursting.  Gas/air mixtures are explosive.  NO open flames, NO sparks and NO smoking.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Use non-sparking handtools.  Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with carbon dioxide, water spray, powder.  In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. 

 AVOID EXPOSURE OF (PREGNANT) WOMEN! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Headache. Confusion. Dizziness. Nausea. Weakness. Unconsciousness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. See Notes. 
Skin      
Eyes      
Ingestion      

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: self-contained breathing apparatus. Ventilation. Remove all ignition sources. 

According to UN GHS Criteria

flam;flamecylinder;gasskull;toxiccancer;health haz
DANGER
Extremely flammable gas
Contains gas under pressure; may explode if heated
Fatal if inhaled
May damage fertility or the unborn child if inhaled
Causes damage to blood if inhaled
Causes damage to the blood and the central nervous system through prolonged or repeated exposure if inhaled 

Transportation
UN Classification
UN Hazard Class: 2.3; UN Subsidiary Risks: 2.1 

STORAGE
Fireproof. Cool. Keep in a well-ventilated room. 
PACKAGING
 
CARBON MONOXIDE ICSC: 0023
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
ODOURLESS TASTELESS COLOURLESS COMPRESSED GAS. 

Physical dangers
The gas mixes well with air, explosive mixtures are easily formed. The gas penetrates easily through walls and ceilings. 

Chemical dangers
May react vigorously with oxygen, acetylene, chlorine, fluorine or nitrous oxide. 

Formula: CO
Molecular mass: 28.0
Boiling point: -191°C
Melting point: -205°C
Solubility in water, ml/100ml at 20°C: 2.3
Relative vapour density (air = 1): 0.97
Flash point: Flammable gas
Auto-ignition temperature: 605°C
Explosive limits, vol% in air: 12.5-74.2
Minimum ignition energy: <0.3mJ 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation. 

Effects of short-term exposure
The substance may cause effects on the blood. This may result in carboxyhaemoglobinemia and cardiac disorders. Exposure at high levels could cause death. Medical observation is indicated. 

Inhalation risk
A harmful concentration of this gas in the air will be reached very quickly on loss of containment. 

Effects of long-term or repeated exposure
The substance may have effects on the cardiovascular system and central nervous system. May cause toxicity to human reproduction or development. 


Occupational exposure limits
TLV: 25 ppm as TWA; BEI issued.
MAK: 35 mg/m3, 30 ppm; peak limitation category: II(2); pregnancy risk group: B.
EU-OEL: 23 mg/m3, 20 ppm as TWA; 117 mg/m3, 100 ppm as STEL 

ENVIRONMENT
 

NOTES
Carbon monoxide is a product of incomplete combustion of coal, oil, wood.
It is present in vehicle exhaust and tobacco smoke.
Depending on the degree of exposure, periodic medical examination is suggested.
There is no odour warning even when toxic concentrations are present.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: F+, T; R: 12-23-48/23-61; S: 53-45; Note: E 

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.
    See Also:
       Toxicological Abbreviations
       Carbon monoxide (EHC 13, 1979, 1st edition)
       Carbon monoxide (EHC 213, 1999, 2nd edition)