ILO Home
  

ICSC index [List of Chemicals]  [Risk Notes]  [Risk Phrases]  [Safety Phrases]  [Danger Symbols] Bottom of page (Ctrl-End)
CARBON MONOXIDE ICSC: 0023
April 2007
Carbon oxide
Carbonic oxide
PDF for printing Explanation of fields
CAS No: 630-08-0
RTECS No: FG3500000
UN No: 1016
EC No: 006-001-00-2
    (cylinder)
CO
Molecular mass: 28.0

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Extremely flammable. Heating will cause rise in pressure with risk of bursting. NO open flames, NO sparks, and NO smoking. 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.
EXPLOSION Gas/air mixtures are explosive. Closed system, ventilation, explosion-proof electrical equipment and lighting. Use non-sparking handtools. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.
 
EXPOSURE   AVOID EXPOSURE OF (PREGNANT) WOMEN! IN ALL CASES CONSULT A DOCTOR!
Inhalation Headache. Confusion. Dizziness. Nausea. Weakness. Unconsciousness. 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 PACKAGING & LABELLING
Evacuate danger area! Remove all ignition sources. Consult an expert! Personal protection: self-contained breathing apparatus. Ventilation. EU classification
F+ Symbol
T Symbol
R: 12-23-48/23-61
S: 53-45
Note: E
UN classification
UN Hazard Class: 2.3
UN Subsidiary Risks: 2.1
GHS classification
Signal: Danger
Flame-Cylinder-Skull-Health haz
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 blood and central nervous system through prolonged or repeated exposure if inhaled


EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-20S1016 or 20G1TF
NFPA Code: H3; F4; R0
Fireproof. Cool. Keep in a well-ventilated room.

IMPORTANT DATA
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, nitrous oxide.

Occupational exposure limits
TLV: 25 ppm as TWA BEI issued (ACGIH 2006).
MAK: 30 ppm 35 mg/m³ Peak limitation category: II(1); Pregnancy risk group: B; (DFG 2006).

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

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

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

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.


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: -191°C
Melting point: -205°C
Solubility in water, ml/100 ml 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
 

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.
No odour warning if toxic concentrations are present.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.

IPCS
International
Programme on
Chemical Safety
WHO ILO UNEP EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2006
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.

Top of page (Ctrl-Home) Updated by AS. Approved by GS. Last update: 29.01.2008