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NITRIC OXIDE
(cylinder)
ICSC: 1311
Peer-Review Status: 25.11.1998 Validated
Nitrogen oxide
Mononitrogen monoxide 
CAS #: 10102-43-9 RTECS #: QX0525000
UN #: 1660
EINECS #: 233-271-0
    Formula: NO
Molecular mass: 30.01

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible but enhances combustion of other substances.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION     In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position. 
 
EXPOSURE   STRICT HYGIENE!   
Inhalation Abdominal pain. Cough. Headache. Drowsiness. Burning sensation. Nausea. Dizziness. Confusion. Blue lips, fingernails and skin. Shortness of breath. Convulsions. Unconciousness. Symptoms may be delayed. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. 
Skin     Refer for medical attention . 
Eyes Redness.  Wear safety goggles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion      

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus.   
EC Classification
 
UN Classification
UN Hazard Class: 2.3; UN Subsidiary Risks: 5.1 and 8 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-20S1660 or 20G1TOC.
NFPA Code: H3; F0; R0; OX. 
Fireproof if in building. Keep in a well-ventilated room. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS COMPRESSED GAS. 

Physical dangers
 

Chemical dangers
The substance is a strong oxidant. It reacts with combustible and reducing materials. Contact with air generates nitrogen dioxide. 

Occupational exposure limits
TLV: 25ppm as TWA; BEI issued; (ACGIH 2004). 

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 is irritating to the eyes and respiratory tract. Inhalation may cause lung oedema. See Notes. The substance may cause effects on the blood. This may result in formation of methaemoglobin. Exposure could cause death. The effects may be delayed. Medical observation is indicated. 

Effects of long-term or repeated exposure
Repeated or prolonged inhalation may cause effects on the lungs. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: -151.8°C
Melting point: -163.6°C
Solubility in water, ml/100ml at 0°C: 7.4
Relative vapour density (air = 1): 1.04  
 

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.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
No odour warning if toxic concentrations are present.
Card has been partly updated in April 2005.
See sections Occupational Exposure Limits, Emergency Response. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
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.


    See Also:
       Toxicological Abbreviations