Magnesium Sulfate Monohydrate CAS 14168-73-1 has the chemical formula H8322MgO8325S and a molecular weight of 138.38. It presents as colorless monoclinic crystals soluble in water slightly soluble in alcohol and insoluble in acetone with a density of 2.57 gmL 25 and a melting point of 150 decomposed. It is a versatile inorganic chemical with wide applications. Primarily it is an essential magnesium fertilizer in agriculture promoting plant photosynthesis disease resistance and fruit quality by supplementing magnesium the core element of chlorophyll. It also acts as a laxative and magnesium supplement in medicine and serves as an additive in printing and dyeing papermaking ceramic and fireproof material industries to improve product performance and processing effects.