Left: temperature and density structure in the fiducial J-type shock. The shock starts at 0 AU and ends at about 5 AU. The dust temperature does not increase enough for thermal sublimation of SO and SO₂. Right: abundance profiles of SO (solid) and SO₂ (dashed) and the key species for gas-phase formation of these species: SH (dot-dashed) and OH (dotted). The region where T_gas >50 K is indicated with the shaded blue region.