Cobalt(II) thiocyanate is primarily used in the Scott test for the presumptive colorimetric detection of cocaine and other alkaloids, forming a distinctive blue complex in the presence of cocaine hydrochloride, which aids in forensic and analytical identification. It is also employed as a reagent in various analytical chemistry procedures for metal ion detection and complex formation studies. Additionally, it serves as an intermediate in the synthesis of coordination compounds and catalysts for organic reactions, particularly those involving sulfur or nitrogen ligands. It finds applications in the manufacture of specialty pigments, dyes, adhesives, and coatings, where it contributes to color stability and performance enhancement.