Methylammonium chloride in an organic halide with a formula of CH<sub>3</sub>NH<sub>3</sub>Cl. It is an ammonium salt composed of methylamine and hydrogen chloride. One potential application for the methylammonium halides is in the production of perovskite solar cells. The methyl group and other hydrogen atoms are bonded covalently to the nitrogen, with the chloride bonded ionically.