Magnesium perchlorate

Magnesium perchlorate is a powerful oxidizing agent, with the formula Mg(ClO4)2.

Magnesium perchlorate decomposes at 250 °C. The heat of formation is -568.90 kJ mol-1.

Highly exothermic with addition of water, dilute with large amounts of water to offset this reaction.

It was used as desiccant to dry gas or air samples, but is no longer advised due to hazards inherent in perchlorates.