A method for the continuous separation of the o - / p - nitro chlorine benzene comprises an isomer mixture of o - / p - / m - nitro chlorine benzene

摘要

1322020 Separation of isomers FARBWERKE HOECHST AG 19 Nov 1970 [21 Nov 1969] 55063/70 Heading C2C A process for the separation of an isomer mixture of the nitro-, chloro-, or nitrochlorobenzene or toluene series comprises cooling a melt of the isomer mixture to obtain a crystal mass consisting of one isomer and a substantially eutectic residual melt, separating the crystal mass from the melt by filtration and/or centrifugation, purifying the crystal mass by pressing.