Used as a drying agent in organic synthesis due to its high affinity for water, effectively removing trace moisture from solvents. Employed in agriculture as a magnesium supplement to correct magnesium deficiency in soils, supporting chlorophyll production and plant growth. In pharmaceuticals, it serves as a source of magnesium in injectable formulations for treating magnesium deficiency and certain cardiac conditions like torsades de pointes. Also utilized in brewing and fermentation processes to adjust mineral content and support yeast activity. In laboratory settings, it is commonly used to precipitate proteins and in buffer preparations requiring magnesium ions.