Hydroxylammonium chloride

Hydroxylammonium chloride

Names
Other names Hydroxylamine hydrochloride
Identifiers
CAS Number	5470-11-1 Y
ChEMBL	ChEMBL542448 N
ChemSpider	20344 Y
EC Number	226-798-2
Jmol 3D model	Interactive image
RTECS number	NC3675000
InChI InChI=1S/ClH.H4NO/c;1-2/h1H;2H,1H3/q;+1/p-1 Y Key: WCYJQVALWQMJGE-UHFFFAOYSA-M Y InChI=1/ClH.H4NO/c;1-2/h1H;2H,1H3/q;+1/p-1 Key: WCYJQVALWQMJGE-REWHXWOFAB
SMILES [Cl-].O[NH3+]
Properties
Chemical formula	[NH3OH]Cl
Molar mass	69.49 g/mol
Appearance	white crystalline solid
Density	1.67 g/cm3
Melting point	155 to 157 °C (311 to 315 °F; 428 to 430 K) decomposes
Vapor pressure	{{{value}}}
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Hydroxylammonium chloride is the hydrochloric acid salt of hydroxylamine. Hydroxylamine is a biological intermediate in the nitrification (biological oxidation of ammonia with oxygen into nitrite) and in the anammox (biological oxidation of nitrite and ammonium into dinitrogen gas) which are important in the nitrogen cycle in soil and in wastewater treatment plants.

Applications

Hydroxylammonium chloride is used in organic synthesis for preparation of oximes and hydroxamic acids from carboxylic acids, N- and O- substituted hydroxyamines, and addition reactions of carbon-carbon double bond.

During the acetyl bromide method of extracting lignin from lignocellulosic biomass, hydroxylammonium chloride can be used to remove bromine and polybromide from the solution.

In surface treatments, it is used in the preparation of anti-skinning agents, corrosion inhibitors, and cleaner additives. It is also a starting material for pharmaceuticals and agrochemicals manufacturing. In the rubber and plastics industries, it is an antioxidant, vulcanization accelerator, and radical scavenger.

It is also used as a fixative for textile dyes, auxiliary in some dyeing processes, as a metal extraction and flotation aid, as an antioxidant in fatty acids and soaps, and as a color stabilizer and emulsion additive in color films.