Nitric Oxide Gas (NO) What is nitric oxide? Nitric oxide (NO) is a colorless, pungent, nonflammable, toxic, oxidizing gas. NO is a pollutant created through the combustion of fossil fuels. It is also produced through the direct reaction of nitrogen and oxygen in the atmosphere during thunderstorms. Commercially, all high-purity nitric oxide is produced from the oxidation of ammonia with a platinum catalyst and heat. Nitric oxide uses There are many nitric oxide uses.Most nitric oxide that is produced is utilized as an intermediate in concentrated nitric acid production. High-purity NO is applied in calibration standards for industrial hygiene monitors, environmental emission regulation, and trace impurity analyzers. In the medical industry, nitric oxide is added into gas mixes to treat pulmonary arterial hypertension and is also beginning to find uses in pharmacological research. Where to buy nitric oxide PurityPlus® offers nitric oxide in several different purities and concentrations. If you're looking for where to buy nitric oxide gas or would like to learn more about how you can obtain nitric oxide for use in your business, contact your local PurityPlus® provider using our distributor locator, via our website, or give us a call at 877-81P-PLUS (877-817-7587). PurityPlus also provides a Nitric Oxide SDS available via this link or in the sidebar.