- Nitrogen oxide
- Dinitrogen trioxide
- Nitrogen sesquioxide
- asym-Dinitrogen trioxide
A blue liquid (under pressure) with a sharp, unpleasant chemical odor. Partially dissociates into NO and NO2.
Used in special purpose fuels.
Registry Numbers and Inventories.
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
5000 (20 C)
1.783 g/cm3 (1.782 -195 C)
Solubility in water
Hazards and Protection.
Protect sylinders from physical damage. Keep in a cool, dry, well-ventilated location.
Use only in a well-ventilated area. Cylinders must be properly secured.
Wear appropriate chemical protective clothing.
Wear positive pressure self-contained breathing apparatus.
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Stable when in a properly sealed cylinder.
Reacts with reducing agents to generate heat and products that may be gaseous (causing pressurization of closed containers) Incompatible with phosphorus, or other reduced materials Reactivity likely to resemble that of nitrogen dioxide and nitrogen tetraoxide.
Nitric oxide, nitrogen dioxide.
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Use alcohol foam, dry chemical or carbon dioxide. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Keep run-off water out of sewers and water sources.
Substance does not burn but will support combustion.
Vapors from liquefied gas are initially heavier than air and spread along ground. These are strong oxidizers and will react vigorously or explosivelywith many materials including fuels. May ignite combustibles (wood, paper, oil, clothing, etc.). Some will react violently with air, moist air and/or water. Containers may explode when heated. Ruptured cylinders may rocket.
Fire will produce irritating, corrosive and/or toxic gases.
The toxological properties of this substance have not been fully investigated.
Unlikely route of exposure.
May be fatal if inhaled. Causes irritation/burns.
May be fatal if absorbed through the skin. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite.
Seek medical assistance.
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Effects may be delayed.
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. In case of contact with liquefied gas, thaw frosted parts with lukewarm water. Effects may be delayed.
Immediately flush with running water for at least 20 minutes. Effects may be delayed.
Std. Transport #