... food,fertilizer,additive,and industry and agriculture application. Magnesium sulfate monohydrate Appearance:White powder Main content:99%min MgSO4:86%min ... (As):0.0002%max Insoluble:0.1%max Magnesium sulfate monohydrate is used in food,fertilizer,additive,and industry and agriculture ... bags,or bulk bag(1000kgs ro 1100kg net). Magnesium sulfate monohydrate