Used in analytical chemistry for the detection of iron(III) ions, producing a deep red coloration due to the formation of ferric thiocyanate complex. Commonly employed in qualitative and quantitative analysis in laboratories.

Utilized in the synthesis of other thiocyanate compounds and in organic chemistry as a source of thiocyanate ions for nucleophilic substitution reactions.

Applied in metallurgy for testing stainless steel welds for chromium depletion, in some metal cleaning or etching processes, and as a complexing agent in hydrometallurgical extraction of copper and other heavy metals from ores.

Found in certain photographic processes and in the formulation of some cold wave solutions for hair permanents.

Also used in educational settings for demonstrating chemical equilibrium and reaction kinetics due to the vivid color change in iron-thiocyanate reactions.

Handle with care, as it can release toxic hydrogen cyanide under acidic conditions.