Cyanic acid
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Basic information
- CAS
420-05-3- Standard SMILES
N#CO- InChIKey
XLJMAIOERFSOGZ-UHFFFAOYSA-N- Molecular formula
- CHNO
- Average molar mass
- 43.025 g/mol
- Monoisotopic mass
- 43.00581365
Overview
Cyanic acid is a pseudohalogen oxoacid and a one-carbon compound. It is a conjugate acid of a cyanate. It is a tautomer of an isocyanic acid.
Names & identifiers
- Preferred name
- Cyanic acid
- IUPAC
- cyanic acid
- English name
- Cyanic acid
- Molecular formula
- CHNO
- Molecular weight
- 43.02
Names & synonyms
Cyanic acidZyansaeure420-05-3Cyansaeurehydroxidonitridocarbonnitridooxocarbonic acidacide cyaniqueacidum cyanicumacido cianicohydrogen nitridooxocarbonateUNII-460E3FHT8O[C(N)OH]
Show more names
460E3FHT8OCHEBI:28024CYANIC ACID [MI]DTXSID3074812(C(N)OH)RefChem:129020DTXCID3040011hydrogen nitridooxocarbonate;hydroxidonitridocarbon;nitridooxocarbonic acid
Database identifiers
- CAS
420-05-3、71000-82-3- PubChem CID
- 540
- DTXSID
DTXSID3074812- ChEMBL
CHEMBL1161700- ChEBI
CHEBI:28024- UNII
- 460E3FHT8O
- EC Number
- 609-981-5
- Nikkaji
- J3.280H
Properties
Computed structural propertiesFilling in
- XLogP
- 0.1
- Topological polar surface area
- 44 Ų
- Hydrogen bond donors
- 1
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 3
- Formal charge
- 0
- Complexity
- 31.3
Experimental & physicochemical properties
SpringerMaterials PropertiesAtomic environment
Density1.140 @ 20°C
Boiling Point23 °C @760 [mm Hg]
Melting Point-86 °C
Physical DescriptionSolid
Physicochemical properties
- Melting point
- -86 °C · -86 °C
- Boiling point
- 23 °C · 23 °C
- Density
- 1 · 1+-.0.06 g/cm3(Predicted)
- pka
- 3.83 · 3.83±0.58(Predicted)
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
Safety & protection
Protective Action Criteria (PAC)
0.75 [mg/m3]
8.3 [mg/m3]
41 [mg/m3]
Related reactions
16 records
Compound notes
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