thiocyanic acid

Thiocyanic acid[1]
Other names	Hydrogen thiocyanate; Sulfocyanic acid; Sulfocyanide
Identifiers
CAS number	463-56-9 Y
PubChem	781
SMILES	SC#N
Properties
Molecular formula	CHNS
Molar mass	59.09 g mol−1
Solubility in water	Miscible
Hazards
R-phrases	R20/21/22 R32 R52/53
S-phrases	(S2) S13 S61
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Thiocyanic acid is a chemical compound with the formula HSCN that exists as a mixture with the isomeric compound isothiocyanic acid (HNCS).^[2] It is the sulfur analog of cyanic acid (HOCN).

HSCN is predicted to have a triple bond between carbon and nitrogen. It has been observed spectroscopically but has not been isolated as a pure substance.^[3]

The salts and esters of thiocyanic acid are known as thiocyanates. The salts are composed of the thiocyanate ion (^-SCN) and a suitable metal cation (e.g., potassium thiocyanate, KSCN). The esters of thiocyanic acid have the general structure R-SCN.

References