... , cupric sulfate, blue stone, blue vitriol, copper sulphate pendahydratcopper sulphate pentahydrate is stable at ambient temperature and pressure, not ... degrees all the crystal water loss made anhydrous. Anhydrous also easily absorbing into copper sulphate pentahydrate. Often use this feature to ... traces of organic matter in water. The copper sulphate pentahydrate heated to 650 degree heat, can be ...