Flowing afterglow measurements are reported which provide rate constants and product identifications at 298±2 K for the gas-phase reactions of OH-with CH3OH, C2H5OH, CH3OCH3, CH2O, CH3CHO, CH3COCH3, CH2CO, HCOOH, HCOOCH3, CH2= C= CH2, CH3-C≍ CH, and C6H5CH3. The main channels observed were proton transfer and solvation of the OH-. Hydration with one molecule of H2O was observed either to reduce ...