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Other Nasty gases, Dr. D. Penney

Nitrogen Dioxide

Uses, Caution, Symptoms, Exposure Limits, Lethal Doses:

  • Uses - Nitric and sulfuric acid production, nitration of organic compounds and explosives, flour bleach, rocket propulsion

  • Cautions - Deadly Insideous Poison!

  • Symptoms - coughing, frothy sputum and dyspnea; chest pain, pulmonary edema, cyanosis, tachypnea and tachycardia; eye irritation. Inflammation of lungs may cause slight pain, but resulting edema several days later may cause death.

  • Exposure Limits - ACGIH TLV: TWA = 3 ppm, STEL = 5 ppm. OSHA PEL: STEL = 1 ppm

  • Lethal Doses - 100 ppm dangerous for short exposure; 200 ppm may be fatal.

    ACGIH = American Conference of Governmental Industrial Hygienists
    OSHA = U.S. Occupational Safety and Health Administration
    TWA = time weighted average
    STEL = short-term exposure limit
    TLV = threshold limit value
    PEL = permissible exposure level

    ...... last changed 05/22/00

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