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NIOSH

CARBON MONOXIDE

ICSC: 0023

Carbon oxide
Carbonic oxide
CO
Molecular mass: 28.0
(cylinder)
ICSC # 0023 		CAS # 630-08-0
RTECS # FG3500000
UN # 1016
EC # 006-001-00-2
April 19, 2007 Validated

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

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Remove all ignition sources. Consult an expert! Personal protection: self-contained breathing apparatus. Ventilation.
Fireproof. Cool. Keep in a well-ventilated room.

Note: E
F+ symbol
T symbol
R: 12-23-48/23-61
S: 53-45
UN Hazard Class: 2.3
UN Subsidiary Risks: 2.1
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
ICSC: 0023 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

CARBON MONOXIDE

ICSC: 0023

I

M

P

O

R

T

A

N

T


D

A

T

A

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; BAT issued;
(DFG 2008).
OSHA PEL†: TWA 50 ppm (55 mg/m3)
NIOSH REL: TWA 35 ppm (40 mg/m3) C 200 ppm (229 mg/m3)
NIOSH IDLH: 1200 ppm See: 630080


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

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

ENVIRONMENTAL
DATA


N O T E S

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.
Transport Emergency Card: TEC (R)-20S1016 or 20G1TF

NFPA Code: H3; F4; R0
Card has been partially updated in November 2008: see Occupational Exposure Limits.

ADDITIONAL INFORMATION



ICSC: 0023 CARBON MONOXIDE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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