Used in analytical chemistry for the detection and quantification of iron(III) ions, producing a deep red coloration due to the formation of ferric thiocyanate complex. Commonly applied in qualitative inorganic analysis and educational lab experiments to demonstrate colorimetric methods.

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

Utilized in the photography industry for toning black and white prints, enhancing image stability and altering tonal qualities.

Applied in metallurgy for certain metal separation processes and as a corrosion inhibitor in some industrial systems.

Also found in some formulations for cold wave solutions in hair perming, where it helps in restructuring disulfide bonds in keratin.

Safety note: Handle with care as it can release toxic cyanide under certain conditions.