Patent ID: 7001584

Claim:
A process for production of hydrogen peroxide according to the anthraquinone process including alternate hydrogenation and oxidation of one or more quinones selected from the group consisting of anthraquinones and tetrahydro anthraquinones, in a working solution comprising at least one quinone solvent tetrabutyl urea, wherein said at least one quinone solvent comprises isodurene in an amount from about 20 to about 80 wt % and additionally durene in an amount not exceeding about 25 wt % of total amount of quinone solvents, the total amount of isodurene and durene constituting from about 30 to about 100 wt % of the quinone solvents, and further wherein the weight ratio isodurene to durene in the working solution is from about 1.5:1 to about 5:1.