Meta-Chloroperoxybenzoic acid (m-CPBA) is a white crystalline powder with a melting point of 90 °С. In pure form, it can be detonated by shock or by sparks, and therefore it is stored as a mixture containing less than 72% m-CPBA ­(containing water and meta-chlorobenzoic acid). It is soluble in dichloromethane, chloroform, ethyl acetate, alcohol, and insoluble in hexanes, carbon tetrachloride, and water. m-СРВА is obtained by the reaction of m-chlorobenzoyl chloride with a basic solution of hydrogen peroxide in the presence of MgSO₄ ^.7H₂O. m-CPBA is used as oxidizing agent in Baeyer–Villiger oxidations[1] and in the synthesis of epoxides,[2], oxaziridines,[3] α-disulfines, [4] sulfoxides and sulfones,[5] N-oxides,[6] and ketones.[7]