Praseodymium(III) chloride is the inorganic compound with the formula PrCl3. It is a blue-green solid that rapidly absorbs water on exposure to moist air to form a light green heptahydrate.
Molar mass：373.77 g/mol (heptahydrate)
Appearance：light green solid (heptahydrate)
Density：2.250 g/cm3 (heptahydrate)
It is used in scientific research.