Exotic property of salty solutions discovered

Water and aqueous solutions can behave strangely under pressure. Experiments carried out at the GFZ German Research Centre for Geosciences using Raman spectroscopy and a diamond anvil cell showed that magnesium sulfate dissolved in water was separated less than expected in magnesium and sulfate ions above a pressure of 0.2 Gigapascal, which equals 2,000 times the normal air pressure. Moreover, ion pairing even increased with pressure above about 0.5 Gigapascal.