thiocyanic acid

noun
thio·​cyanic acid | \¦thī(ˌ)ō+...-\

Definition of thiocyanic acid 

: an unstable liquid acid HSCN or HNCS of strong odor that is usually obtained by distilling a thiocyanate salt with dilute sulfuric acid and that polymerizes readily — see isothiocyanic acid

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History and Etymology for thiocyanic acid

thiocyanic International Scientific Vocabulary thi- + cyanic

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