Magnesium perchlorate hexahydrate is a highly hygroscopic metal hydrate that can be dehydrated to prepare anhydrous magnesium perchlorate.

Application

MAGNESIUM PERCHLORATE is a strong oxidizing agent. Decomposes at 185-190°C [Hawley]. Noncombustible but accelerates the burning of combustible materials. If large quantities are involved in the fire or the combustible material is finely divided an explosion may result.