A method for the production of hydroquinone with photo qualitaet from hydroquinone with technical purity

摘要

ABSTRACT OF THE DISCLOSUREThere is disclosed the method of preparingphotographic grade hydroquinone from technical gradehydroquinone which consists of treating a a solution ofthe technical grade hydroquinone in the presence of apalladium catalyst with hydrogen while ?he hydroquinonesolution is at a pH between about 3 and about 6.