Magnesium 8-anilino-1-naphthalenesulfonate hydrateANSA magnesium salt ; 1,8-ANS magnesium salt 8-Anilino-1-naphthalenesulfonic acid hemimagnesium salt hydrateN-Phenyl peri acid magnesium saltCAS NO :18108-68-4C16H12Mg0.5NO3S·xH2O ==310.49(anhydrous basis)