Cyanic acid
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| Cyanic acid | |
|---|---|
 |
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| General | |
| Systematic name | Cyanic acid |
| Other names | ? |
| Molecular formula | CHNO |
| SMILES | N#CO |
| Molar mass | 43.02 g/mol |
| Appearance | Colorless liquid or gas (b.p. is near room temperature) |
| CAS number | [420-05-3] |
| Properties | |
| Density and phase | ? g/cm³, ? |
| Solubility in water | ? g/100 ml (?°C) |
| Melting point | -81°C (102 K) |
| Boiling point | 23.5°C (297 K) |
| Acidity (pKa) | ? |
| Basicity (pKb) | ? |
| Viscosity | ? cP at ?°C |
| Structure | |
| Molecular shape | Bent |
| Dipole moment | ? D |
| Hazards | |
| MSDS | External MSDS |
| Main hazards | Poisonous |
| NFPA 704 | |
| Flash point | ?°C |
| R/S statement | R: ? S: ? |
| RTECS number | ? |
| Supplementary data page | |
| Structure and properties |
n, εr, etc. |
| Thermodynamic data |
Phase behaviour Solid, liquid, gas |
| Spectral data | UV, IR, NMR, MS |
| Related compounds | |
| Other anions | ? |
| Other cations | ? |
| Related ? | ? |
| Related compounds | ? |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Cyanic acid is a colourless poisonous liquid with a boiling point of 23.5°C and a melting point of -81°C. At 0°C cyanic acid is converted to cyamelide.
In water, cyanic acid hydrolyses to carbon dioxide and ammonia.
Cyanic acid (H-O-C≡N) is an isomer of fulminic acid (H-C=N-O).
A tautomer exists for cyanic acid, H-N=C=O.
It forms in a reaction between potassium cyanate and formic acid.
The trimer of cyanic acid is cyanuric acid.
Cyanic acid is the simplest stable chemical compound that contains carbon, hydrogen, nitrogen, and oxygen, four most commonly-found atoms in organic chemistry (fulminic acid is not stable as its carbon and oxygen atoms do not achieve a stable octet).
[edit] See also
[edit] References
- Handbook of Chemistry and Physics, 65th. Edition, CRC Press (1984)
- Cyanic acid from NIST Chemistry Webbook (accessed 090906)
[edit] External links
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