Ferric thiocyanate (Fe(SCN)₃) is a red, water-soluble iron(III) thiocyanate complex, with a molar mass of ~230.09 g/mol. When dissolved in aqueous medium with thiocyanate (SCN⁻) and Fe³⁺, it forms the characteristic blood-red complex ion [FeSCN]²⁺, making it a classical reagent for colorimetric detection of Fe³⁺ ions.
Ferric thiocyanate enables sensitive, low-cost colorimetric detection of iron in water, supporting environmental monitoring and early identification of potential contamination. Its clear visual response allows rapid assessment without complex instrumentation, making routine water-quality checks more accessible. By facilitating research on thiocyanate behavior and degradation, it also contributes to improved understanding and management of thiocyanate-containing industrial wastewater, ultimately supporting safer environmental practices.