Thiocyanic acidThiocyanic acid is a chemical compound with the formula HSCN and structure H\sS\sC\tN, which exists as a tautomer with isothiocyanic acid (H\sN\dC\dS). The isothiocyanic acid tautomer tends to dominate with the compound being about 95% isothiocyanic acid in the vapor phase. Read from the Chembox of the Wikipedia article Thiocyanic acid, revision 1380085665.

Property

Value

Formula

CHNS, 59.09 g/mol

Melting point

5 °C

Density

2.04 g/cm³

log P, measured

0.429

pKa

0.926

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