Calcium chloride hexahydrate has separated in jar - is it beyond saving?
Calcium chloride is incredibly hygroscopic (it sucks in water), this property makes it incredibly useful (for instance when used in a desiccator or in a drying tube to prevent water from getting into a reaction).

The wet $\ce{CaCl2}$ can be turned back into a solid  by heating (ideally under vacuum), however you can end up with a mixture of different compounds (for instance heating very wet $\ce{CaCl2}$ has been known to give $\ce{Ca(OH)2}$).  It can also be recrystallised from ethanol to give the di-hydrate, which in turn may be dehydrated by heating, however fresh $\ce{CaCl2}$ is very inexpensive, and so I would suggest buying a new bottle, and ensuring it is sealed well after use to prevent it taking up moisture from the atmosphere.