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NITRIC OXIDE ICSC: 1311
Date of Peer Review: November 1998

Nitrogen oxide
Mononitrogen monoxide
(cylinder)
CAS # 10102-43-9 NO
RTECS # QX0525000 Molecular mass: 30.01
UN # 1660
EC #
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 skin. Blue lips or finger nails. Shortness of breath. Convulsions. Unconsciousness. Symptoms may be delayed (see Notes).
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.
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 take to a doctor.
Ingestion


SPILLAGE DISPOSAL PACKAGING & LABELLING
Gas-tight chemical protection suit including self-contained breathing apparatus.
EU Classification
UN Classification
UN Hazard Class: 2.3
UN Subsidiary Risks: 5.1 and 8

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.
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


NITRIC OXIDE ICSC: 1311
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS COMPRESSED GAS

CHEMICAL DANGERS:
The substance is a strong oxidant and reacts with combustible and reducing materials. On contact with air it emits nitrogen dioxide.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 25 ppm 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 the respiratory tract. Inhalation of the substance may cause lung oedema (see Notes). The substance may cause effects on the blood, resulting in formation of methaemoglobin. Exposure may result in death. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Lungs may be affected by repeated or prolonged exposure.
PHYSICAL PROPERTIES
Boiling point: -151.8C
Melting point: -163.6C
Solubility in water, ml/100 ml at 0C: 7.4
Relative vapour density (air = 1): 1.04
ENVIRONMENTAL DATA

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


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:
        Nitric oxide (PIM 528)