Blue alum

蓝矾───Blue alum

Simply, the hydrate is a compound containing water molecules and secondary school textbooks mentioned on the alum, gypsum, and blue vitriol, are the most famous hydrate.───简单地来说，水合物是含有水分子的化合物，中学课本上提到的明矾、石膏和蓝矾等，都是最著名的水合物。