Description_x000D_ General description_x000D_ Magnesium is a typical ionic halide, and is very soluble in water. Magnesium has a variety of biological roles in enzymology, cell membrane/wall structure, muscle cell physiology, and nucleic acid structure. Magnesium is an essential co-factor in many enzymes, including DNAse, some restriction enzymes, and Ribonuclease H._x000D_ Magnesium chloride is widely used to supply the magnesium ion in various molecular biology applications, including PCR reactions._x000D_ Application_x000D_ Magnesium chloride is widely used to supply the magnesium ion in various molecular biology applications, including PCR reactions and buffers. It was used to prepare buffer to lyse cells for immunoprecipitation and to prepare serum-free medium for electrophysiological studies of rat brain slice cultures._x000D_ Components_x000D_ Magnesium chloride solution contains 1M magnesium chloride in 18 megaohm water.