Thiocyanate salts are chemical compounds that contain the thiocyanate ion, SCN⁻. They are formed when thiocyanic acid reacts with a base or when a metal reacts with thiocyanate. These salts are often used in various applications, including agriculture, where they can act as herbicides, and in laboratories for chemical analysis. Common examples of thiocyanate salts include potassium thiocyanate and sodium thiocyanate. They are typically soluble in water and can be used in the synthesis of other chemicals. Additionally, thiocyanate salts play a role in biological systems, particularly in the metabolism of cyanide.