Tungsten(VI) chloride also known as tungsten hexachloride, is a chemical compound with the formula WCl6. As one of the key compounds in tungsten chemistry, this substance is recognized for its high reactivity and versatility in various applications. In this article, we will delve into the intricate details of tungsten(VI) chloride, including its chemical properties, synthesis, industrial uses, and safety precautions. This guide aims to provide an in-depth understanding of WCl6, making it a valuable resource for professionals and researchers in the field of inorganic chemistry. Chemical Properties of Tungsten(VI) Chloride Tungsten(VI) chloride is a dark blue, crystalline solid that exists in two polymorphic forms: monoclinic and orthorhombic. The compound is highly reactive, particularly with moisture, making it hygroscopic. When exposed to air, WCl6 readily hydrolyzes to form tungsten oxychloride (WOCl4) and hydrogen chloride (HCl). Its high reactivity is attributed to the presence