Nitrogen Dioxide Supplier to Indianapolis This brownish, potentially deadly, corrosive, liquefied PurityPlus® gas has several commercial uses, and American Welding & Gas, Inc. offers it to Indianapolis enterprises. Nitrogen Dioxide (NO₂) is an atmospheric contaminant that results when fossils fuels come in contact with excess oxygen and ignite; at high combustion temperatures, the oxygen not ignited with the fuel reacts with the nitrogen from the air to form nitric oxide (NO) and, in the presence of more oxygen and heat, is further oxidized to NO₂. Commercially, Nitrogen Dioxide is achieved via the oxidation of ammonia at carefully regulated temperatures in a steam-rich environment. Nitrogen Dioxide’s largest use is in rocket motors, more appropriately in its dimerized state as N₂O₄ (Nitrogen Tetroxide, NOM 4). In this form, it is reacted with hydrazine to provide propulsion. These liquefied gases may be stored for exceptionally long periods in space given that they’re not cryogenic fluids and thus pose no threat of excessive venting from boil-off. They are used to position motors in orbiting satellites that might need to be relocated later. NO₂ is also employed as an oxidizing agent in organic synthesis and in select applications as a sterilizing atmosphere. Used as a specialty gas, NO₂ is often a factor in calibration gases for environmental emission and industrial hygiene scrutiny. Have questions about PurityPlus® Nitrogen Dioxide or its uses? The trusted professionals at American Welding & Gas, Inc. have answers. Give us a call here in Indianapolis at . Or contact us online for this or any specialty gas you require.