Oxidized disulfide oil solvent compositions

An oxidized disulfide oil (ODSO) mixture consisting of two or more primary oxidized disulfide oil (ODSO) compounds selected from the group consisting of

• (R—SO—S—R′), (R—SOO—S—R′), (R—SOO—SO—R′),
• (R—SOO—SOO—R′), (R—SO—SO—R′), (R—SO—SOO—OH),
• (R—SOO—SOO—OH), (R—SO—SO—OH), and (R—SOO—SO—OH), and mixtures thereof, and
• at least one of a secondary oxidized disulfide oil (ODSO) compound selected from the group consisting of
• (R—SOO—SO—R′),
• (R—SOO—SOO—R′), (R—SO—SO—OH),
• (R—SOO—SOO—OH), (R—SO—SO—OH), and (R—SOO—SO—OH), and mixtures thereof,
• where R and R′ are alkyl groups each of which comprises from 1-10 carbon atoms,
• and wherein the ODSO compounds in the mixture correspond to oxidized disulfide oils present in an effluent refinery hydrocarbon stream recovered following the catalytic oxidation of mercaptans present in the hydrocarbon stream.