Ammonium thiocyanate is an inorganic compound with the formula NH4SCN. It is the salt of the ammonium cation and the thiocyanate anion.
Ammonium thiocyanate is used in the manufacture of herbicides, thiourea, transparent artificial resins, as a stabilizing agent in photography, in various rustproofing compositions, as an adjuvant in textile dyeing and printing; as a tracer in oil fields, in the separation of hafnium from zirconium and in titrimetric analyses. Ammonium thiocyanate can also be used to determine the iron content in soft drinks by colorimetry.