Ammonium Thiocyanate is a chemical compound with the formula NH4SCN. It appears as a white crystalline solid and is highly soluble in water. This compound is often used in laboratories and various industrial applications, including the production of fertilizers and as a reagent in chemical reactions. In addition to its industrial uses, Ammonium Thiocyanate plays a role in some scientific experiments, particularly in the study of thermodynamics. When dissolved in water, it can absorb heat, leading to a cooling effect, which makes it useful in endothermic reactions and demonstrations.