ヒドロキシルアミン

Also known as nitrinous acid, aminol, azanol

Hydroxylamine (also known as hydroxyammonia) is an inorganic compound with the chemical formula . The compound exists as hygroscopic colorless crystals. Hydroxylamine is almost always provided and used as either an aqueous solution or, more often, as one of its salts, such as hydroxylammonium sulfate, a water-soluble solid.

OverviewAI-generated

Hydroxylamine is a chemical compound with the formula NH₂OH. It has a molecular mass of 33.021463716 and an electric dipole moment of 0.59. The substance exhibits a melting point of 33.1 and a boiling point of 58. Its pKa value is 5.97, and its ionization energy is 10.00.

Chemical properties include a charge of 0, an xlogp of -1.2, and a topological polar surface area of 46.3. The molecule contains two hydrogen bond donors and two hydrogen bond acceptors. It is referenced by 289 other encyclopedia articles.

Synthesized by Vinony from 23 facts across 4 sources: Wikidata, PubMed, PubChem, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

In the Vinony graph

Within Vinony's link graph, ヒドロキシルアミン is referenced by 289 other articles, and connects out to ion, ammonia and acid dissociation constant.

It is catalogued under topics including Chembox having GHS data, Chembox image size set and ECHA InfoCard ID from Wikidata.

Its subject is documented across 38 Wikipedia language editions.

Chemical data

Formula: H3NO
Molecular weight: 33.03 g/mol
IUPAC name: hydroxylamine
SMILES: NO
InChIKey: AVXURJPOCDRRFD-UHFFFAOYSA-N
XLogP: -1.2
Polar surface area: 46.3 Å²
H-bond donors: 2
H-bond acceptors: 2
Formal charge: 0

via PubChem

Drug data · ChEMBL

Molecule type: Small molecule

via ChEMBL · EBI

Research

44,562 papers

Hydroxylamine and the nitrogen cycle: A review.Water research · 2021
Hydroxylamine natural products.The Alkaloids. Chemistry and biology · 2025
Electroanalytical overview: the sensing of hydroxylamine.Analytical methods : advancing methods and applications · 2023
Enzymatic Nitrogen Incorporation Using Hydroxylamine.Journal of the American Chemical Society · 2023
The advent of electrophilic hydroxylamine-derived reagents for the direct preparation of unprotected amines.Chemical communications (Cambridge, England) · 2022

via PubMed

Wikidata facts

Has part: hydroxyl
Mass: 33.021463716

Show 11 more facts

canonical SMILES: NO
Commons category: Hydroxylamine
chemical formula: NH₂OH
pKa: 5.97
described by source: Encyclopædia Britannica 11th edition
found in taxon: Arabidopsis thaliana
electric dipole moment: 0.59
ionization energy: 10.00
melting point: 33.1
boiling point: 58
different from: ammonia solution

Sources (3)

via Wikidata · CC0

Article · 日本語

ヒドロキシルアミン (英: hydroxylamine) は示性式が NH2OH と表される無機化合物である。水とアンモニアが互いに一部分を共有したような構造を持っているので、それらの混成体と見ることもできる。純粋なヒドロキシルアミンは室温で不安定な結晶性の固体であり、吸湿性を持つ。潮解性がある。一般的に水溶液、または塩酸塩などの塩として取り扱われる。ヒドロキシルアミンは生合成的硝化の中間体である。アンモニアの酸化はヒドロキシルアミン酸化還元酵素によって媒介される。

Abstract from DBpedia / Wikipedia · CC BY-SA