Chemical profile
[Chinese name] Difference Cyanic acid [English name] Isocyanic acid
[Structure or molecular formula] HNCO H-N=C=O
[Molecular weight] 43.03
[Existence] In the state of steam or Ether In solution Free acid Only exists in the form of isocyanate (H-N=C=O) instead of Cyanic acid Mixture of (H-O-CN) and isocyanate (H-N=C=O) [Density] 1.14
[Boiling point (℃)] 23.6
[Character]
Isocyanate [Preparation or source]
May be determined by Cyanuric acid It is made by heating and decomposition. And Fulvic acid （H2O2N2C2）、 N-cyanic acid (HOCN) are isomers of each other Others
And difference Cyanic acid Together they are called cyanic acid. It shows strong acidity in aqueous solution. yes volatility And corrosivity. The property is unstable and easy to polymerize. It is generally used as raw material to react with alcohol Isocyanate 。 Isocyanic acid can be converted from Cyanuric acid Preparation. When adding water, pass HNCO+ H2O → CO2+NH3 decomposes into CO2 and NH3 。 
