Copper(I) thiocyanate forms one double salt with the group 1 elements, CsCu(SCN). The double salt only forms from concentrated solutions of CsSCN, into which CuSCN dissolves. From less concentrated solutions, solid CuSCN separates reflecting its low solubility. When brought together with potassium, sodium or barium thiocyanate, and brought to crystallisation by concentrating the solution, mixed salts will crystallise out. These are not considered true double salts. As with CsCu (SNC), copper(I) thiocyanate separates out when these mixed salts are redissolved or their solutions diluted.