Potassium thiocyanate solution is widely used in analytical chemistry as a reagent for detecting the presence of iron ions. When added to a solution containing iron(III) ions, it forms a blood-red complex, which is a qualitative test for iron. It is also employed in the determination of chloride ions through titration methods, where it serves as an indicator. In the field of photography, it is used in some photographic processing solutions to enhance image quality and stability. Additionally, it finds application in the textile industry as a dyeing auxiliary, helping to improve the color fastness of fabrics. In organic synthesis, it is utilized as a source of thiocyanate ions in various reactions, including the preparation of thiocyanate derivatives. Its role in the manufacturing of pharmaceuticals and pesticides is also notable, where it acts as an intermediate in the synthesis of active compounds. Furthermore, it is used in some metal treatment processes to improve corrosion resistance and surface properties.