International Chemical Safety Cards

NITROGEN DIOXIDE ICSC: 0930
NITROGEN DIOXIDE
Nitrogen oxide
Nitrogen peroxide
(cylinder)
NO2
Molecular mass: 46.01
CAS # 10102-44-0
RTECS # QW9800000
ICSC # 0930
UN # 1067
EC # 007-002-00-0

TYPES OF
HAZARD/
EXPOSURE
ACUTE HAZARDS/
SYMPTOMS
PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible but enhances combustion of other substances.
NO contact with combustibles.
In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION

In case of fire: keep cylinder cool by spraying with water.
EXPOSURE
STRICT HYGIENE!
IN ALL CASES CONSULT A DOCTOR!
  • INHALATION
  • Cough. Dizziness. Headache. Sweating. Laboured breathing. Nausea. Shortness of breath. Sore throat. Vomiting. Weakness. Wheezing. Symptoms may be delayed (see Notes).
    Ventilation, local exhaust, or breathing protection.
    Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention.
  • SKIN
  • Redness. Pain.
    Protective gloves. Protective clothing.
    First rinse with plenty of water, then remove contaminated clothes and rinse again. Refer for medical attention.
  • EYES
  • Redness. Pain.
    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
  • (See Inhalation).
    Do not eat, drink, or smoke during work.
    Rinse mouth. Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Evacuate danger area! Consult an expert! Ventilation. Do NOT absorb in saw-dust or other combustible absorbents. Remove vapour with fine water spray. Neutralize used water with chalk or soda (extra personal protection: complete protective clothing including self-contained breathing apparatus).
    Ventilation along the floor.

    T+ symbol
    R: 26-37
    S: (1/2-)7/9-26-45
    UN Hazard Class: 2.3
    UN Subsidiary Risks: 5.1 and 8
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0930 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

    International Chemical Safety Cards

    NITROGEN DIOXIDE ICSC: 0930

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    PHYSICAL STATE; APPEARANCE:
    REDDISH-BROWN GAS OR YELLOW LIQUID , WITH PUNGENT ODOUR.

    PHYSICAL DANGERS:
    The gas is heavier than air.

    CHEMICAL DANGERS:
    The substance is a strong oxidant and reacts violently with combustible and reducing materials. Reacts with water to form nitric acid and nitric oxide. Attacks steel in the presence of moisture.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV (as TWA): 3 ppm; 5.6 mg/m3; (as STEL): 5 ppm; 9.4 mg/m3 (ACGIH 1996).


    ROUTES OF EXPOSURE:
    The substance can be absorbed into the body by inhalation and by ingestion.

    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 and the vapour irritate the eyes, the skin and the respiratory tract. Inhalation of the gas or the vapor may cause lung oedema (see Notes). Exposure at high level may result in death. The effects may be delayed. Medical observation is indicated.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    The substance may have effects on the immune system and lungs , resulting in decrease in resistance to infection. May cause genetic damage in humans. Animal tests show that this substance possibly causes toxic effects upon human reproduction.
    PHYSICAL
    PROPERTIES
    Boiling point: 21.2°C
    Melting point: -9.3°C
    Relative density (water = 1): 1.45 (liquid)
    Solubility in water: reaction
    Vapour pressure, kPa at 20°C: 96
    Relative vapour density (air = 1): 1.58
    ENVIRONMENTAL
    DATA

    N O T E S
    The commercial brown liquid under pressure is an equilibrium mixture of nitrogen dioxide and the colourless nitrogen tetroxide. Non irritant concentration may cause lung oedema. 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 are therefore essential. Immediate administration of an appropriate spray, by a doctor or a person authorized by him/her, should be considered. Do NOT take working clothes home. Rinse contaminated clothes (fire hazard) with plenty of water. Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
    Transport Emergency Card: TEC (R)-109
    NFPA Code: H3; F0; R0; OX
    ADDITIONAL INFORMATION


    ICSC: 0930 NITROGEN DIOXIDE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither the CEC or 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. 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.