SOCl2, sometimes referred to as thionyl chloride, is a versatile chemical compound with many applications in both industrial and laboratory contexts. It has a transparent, colorless to yellowish liquid form and is capable of having strong reactions with a wide range of chemical and inorganic substances. The chemical compound thionyl chloride is a clear to slightly yellowish liquid at ambient temperature, making it easy to handle and dispense for a number of uses. Herbicide, insecticide, and fungicide production depends heavily on thionyl chloride. It is a versatile reagent used in chemical laboratories for a variety of reactions, including the transformation of alcohols into alkyl chlorides.