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isocyanic acid
Sign in to saveAlso known as cyanic acid, hydrogen cyanate, oxidoazanediidocarbon, HNCO, [C(NH)O], HN=C=O, hydrogen isocyanate, carbimide
chemical compound of structural formula HNCO
In the Vinony graph
Within Vinony's link graph, isocyanic acid is referenced by 356 other articles, and connects out to chemical formula, acrylonitrile and fulminic acid.
Vinony files it under Acids, Chemical articles with multiple CAS registry numbers and Chemical articles with multiple compound IDs.
Its subject is documented across 34 Wikipedia language editions.
Chemical data
- Formula
- CHNO
- Molecular weight
- 43.025 g/mol
- IUPAC name
- isocyanic acid
- SMILES
- C(=N)=O
- InChIKey
- OWIKHYCFFJSOEH-UHFFFAOYSA-N
- XLogP
- 1
- Polar surface area
- 40.9 Ų
- H-bond donors
- 1
- H-bond acceptors
- 2
- Formal charge
- 0
via PubChem
Wikidata facts
- Has part
- carbon
- Mass
- 43.006
Show 6 more facts
- crystal system
- orthorhombic crystal system
- Commons category
- Isocyanic acid
- canonical SMILES
- C(=N)=O
- chemical formula
- CHNO
- tautomer of
- cyanic acid
- found in taxon
- Homo sapiens
via Wikidata · CC0
~6 min read
Encyclopedic overview
Isocyanic acid is a chemical compound with the structural formula HNCO, which is often written as H−N=C=O. It is a colourless, volatile and poisonous gas, condensing at 23.5 °C. It is the predominant tautomer and an isomer of cyanic acid (aka. cyanol) (H−O−C≡N), and the monomer of cyanuric acid.
The derived anion of isocyanic acid is the same as the derived anion of cyanic acid, and that anion is [N=C=O], which is called cyanate. The related functional group −N=C=O is isocyanate; it is distinct from cyanate (−O−C≡N), fulminate (−O−N≡C), and nitrile oxide (−C≡N−O).
Excerpted from Wikipedia’s “isocyanic acid” article, available under the CC BY-SA 4.0 licence.