The present invention relates to a process for producing hydrogen peroxide by the AO process, comprising the two alternating steps of: hydrogenation of a working solution in the presence of a catalyst, said working solution containing at least one quinone dissolved in at least one organic solvent, in order to obtain at least one corresponding hydroquinone; and oxidation of said at least one hydroquinone; the solvent corresponding to formula (I) below:

##STR00001## in which n is an integer greater than or equal to 8.

The present invention relates to a process for producing hydrogen peroxide by the AO process, comprising the two alternating steps of: hydrogenation of a working solution in the presence of a catalyst, said working solution containing at least one quinone dissolved in at least one organic solvent, in order to obtain at least one corresponding hydroquinone; and oxidation of said at least one hydroquinone; the solvent corresponding to formula (I) below:

##STR00001## in which n is an integer greater than or equal to 8.