KSCNNO2

Potassium thiocyanate is a chemical compound with the formula KSCN. It is a salt formed from the potassium cation (K+) and the thiocyanate anion (SCN−). Potassium thiocyanate is a colorless crystalline solid that is soluble in water and alcohol. It is typically encountered as a white, crystalline powder. The compound is a common laboratory reagent and has several industrial applications.

Potassium thiocyanate can be synthesized by reacting potassium cyanide with sulfur, or by the reaction of potassium hydroxide with ammonium thiocyanate. In the laboratory, it is often used as a source of thiocyanate ions. It is also employed in qualitative analysis for the detection of iron(III) ions, which form a distinct blood-red complex with thiocyanate.

Industrially, potassium thiocyanate finds use in various processes. It is utilized in the textile industry as a dyeing auxiliary. It also plays a role in photography and in the production of certain herbicides and pesticides. Furthermore, it is used in the synthesis of other thiocyanate compounds and organic thiocyanates. While generally considered a stable compound, it can decompose when heated strongly, releasing toxic fumes. Care should be taken when handling potassium thiocyanate, as it can be irritating to the skin and eyes.