Magnesium sulfate heptahydrate Used in food, fertilizer, additive, and for industry and agriculture magnesium ... Appearance: Colorless crystal or white powder4).Packing:25kg/50kg N.W. each, in PP woven bag Magnesium sulphate features:1) Main content ... : 99.8%2) Appearance: white crystal3) Used in food, fertilizer, additive, and for industry and agriculture applicationsInner packing ...