The chemical Magnesium Chloride has a designated molecular formula of Cl2Mg and a molecular weight of 95.205 g/mol. Synonyms may include: CCRIS 3494, Chlorure de magnesium hydrate [French], Magnesium dichloride hexahydrate, Magnesium chloride (MgCl2) hydrate (1:6), Magnesium chloride hydrate (MgCl2.6H2O), Chlorure de magnesium hydrate, UNII-02F3473H9O, Magnesium chloride (ChemID).