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Solvent deasphalting (SDA) of heavy oil generally uses alkanes, from propane to heptane. The solvent power of propane is the weakest, and that of heptane is the strongest. Ethyl ether has slightly stronger solvent power than heptane. Dimethyl ether (DME), an alternative to diesel fuels, is thus expected to have good solvent power for SDA. DME was used for asphaltene separation from vacuum residue of Arabian Light crude oil (AL-VR) at DME/AL-VR weight ratio of 10-60, and compared with separationdoi:10.1627/jpi.53.256 fatcat:o2uq6upf4bdpvj3b4jzx64p3uu