... grade, MgSO4 Monohydrate lndustry grade, MgSO4 Heptahydrate lndustry grade, MgSO4 Heptahydrate Pharmaceutical Food grade, MgSO4 Heptahydrate Feed grade Magnesium ... drying: ---- Appearance: White granular of powder Magnesium sulfate Monohydrate Fertilizer grade Itern Powder / Granular Content: 27% min / ... White of white yellow Magnesium sulfate Monohydrate lndustry grade MgO: 28% min MgS04: 98% min Mg ...