Nitro compound, any of a family of chemical compounds in which the nitro group
(−O−N=O) forms part of the molecular structure. The most common
examples are organic substances in which a carbon atom is linked by a
covalent bond to the nitrogen atom of the nitro group.
Nitrites usually are prepared by absorption of nitric oxide and nitrogen dioxide in an alkaline solution.Salts of nitrous acid are ionic compounds containing the nitrite ion, NO-2, and a positive ion such as Na+ in sodium nitrite (NaNO2).