Hydroxylammonium Nitrate or hydroxylamine Nitrate (HAN) is an energetic chemical with the chemical formula NH₃OHNO₃. It is the salt of hydroxylamine and nitric acid. It is related to ammonium nitrate, but has a higher oxygen content. In its pure form, it is a hygroscopic solid. The compound hydroxylamine is a nitrogen-containing base whose chemical formula is NH2OH, and is therefore a close relative of the compound ammonia. ... R-phrases , S-phrases , , , , Flash point not applicable RTECS number QU5775000 Supplementary data page Structure and properties n, εr, etc. ... RTECS number BR9050000 Supplementary data page Structure and properties n, εr, etc. ... A hygroscopic substance is a substance that absorbs water readily from its surroundings. ...

It is usually used in aqueous solution. The solution is corrosive and toxic, but is not believed to be carcinogenic. HAN MSDS can be found on the web (example: Sachem MSDS for HAN 2 M).

HAN is potentially unstable in presence of a strong oxidizer, such as nitric acid. Presence of trace amounts of metallic salts decreases markedly the stability of HAN solutions, and accidents have been reported (see references below).

HAN is being researched as a potential rocket propellant, both in the solid form as a solid propellant oxidizer, and in the aqueous solution as a safer and more environmentally friendly alternative to the monopropellant hydrazine. A propellant is a material that is used to move an object by applying a motive force. ... A (usually liquid) rocket propellant that can be used by itself, without the need for a second component. ... Hydrazine is a chemical compound with formula N2H4 used as a rocket fuel. ...

HAN is sometimes used in nuclear reprocessing as a plutonium reductant. Nuclear reprocessing separates any usable elements (e. ...

Bibliography:

John R. Pembridge et al. (1979). "Kinetics, Mechanism, and Stoicheiometry of the Oxidation of Hydroxylamine by Nitric Acid". JCS Dalton., 1979, 1657-1663.

Donald G. Harlow et al. (1998). "Technical Report on Hydroxlyamine Nitrate". U.S. Department of Energy. DOE/EH-0555

Gösta Bengtsson et al. (2002) "The kinetics and mechanism of oxidation of hydroxylamine by iron(III)". J. Chem. Soc., Dalton Trans., 2002, 2548–2552