Anhydrous magnesium sulfate is an inorganic compound with molecular formula MgSO4, colourless rhombohedral crystal system. Soluble in water, ethanol, glycerol, insoluble in acetone. It is used in pharmacy and printing and dyeing industry, also can be used as desiccant, feed, fertiliser or compound fertiliser, also is the raw material for producing magnesium oxide.

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