File:Nitrous_acid_acsv.svg · Wikimedia Commons · See Wikimedia Commons
nitrous acid
Sign in to saveAlso known as nitrosyl hydroxide, dioxonitric acid, hydroxidooxidonitrogen
chemical compound
OverviewAI-generated
Nitrous acid is a chemical compound with the formula HNO₂. Its canonical SMILES notation is N(=O)O, and it has a mass of 47.001. The compound exhibits a melting point of 42.35 and a boiling point of 158. Its pKa value is 3.2.
Additional properties include a weight of 47.014, an xlogp of -0.3, and a tpsa of 49.7. The molecule contains one hydrogen bond donor and three hydrogen bond acceptors, with a charge of 0. A search for nitrous acid in PubMed yields 30868 results. The subject is referenced by 269 other encyclopedia articles.
Synthesized by Vinony from 21 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.
Chemical data
- Formula
- HNO2
- Molecular weight
- 47.014 g/mol
- IUPAC name
- nitrous acid
- SMILES
- N(=O)O
- InChIKey
- IOVCWXUNBOPUCH-UHFFFAOYSA-N
- XLogP
- -0.3
- Polar surface area
- 49.7 Ų
- H-bond donors
- 1
- H-bond acceptors
- 3
- Formal charge
- 0
via PubChem
Research
30,868 papers- Improving wastewater management using free nitrous acid (FNA).Water research · 2020
- Understanding the influence of free nitrous acid on microalgal-bacterial consortium in wastewater treatment: A critical review.Bioresource technology · 2022
- Potential of free nitrous acid (FNA) for sludge treatment and resource recovery from waste activated sludge: A review.Journal of environmental management · 2024
- Understanding the Effect of Free Nitrous Acid on Biofilms.Environmental science & technology · 2022
- Genetic effects of nitrous acid.Mutation research · 1977
via PubMed
~5 min read
Encyclopedic overview
Nitrous acid (molecular formula HNO 2) is a weak and monoprotic acid known only in solution, in the gas phase, and in the form of nitrite (NO 2) salts. It was discovered by Carl Wilhelm Scheele, who called it "phlogisticated acid of niter". Nitrous acid is used to make diazonium salts from amines. The resulting diazonium salts are reagents in azo coupling reactions to give azo dyes.
Structure
Excerpted from Wikipedia’s “nitrous acid” article, available under the CC BY-SA 4.0 licence.