<Tr> <Td_colspan="2"> Infobox references </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> </Tr> <P> Cobalt (II) chloride is an inorganic compound of cobalt and chlorine, with the formula CoCl . It is usually supplied as the hexahydrate CoCl 6H O, which is one of the most commonly used cobalt compounds in the lab . </P> <P> The hexahydrate is purple, whereas the anhydrous form is sky blue . Because of the ease of the hydration / dehydration reaction, and the resulting color change, cobalt chloride is used as an indicator for water in desiccants . </P>

What is the formula of cobalt(ii) chloride hexahydrate