The water sample synthetic RB19 was investigated for the removal of color as function of dosages and sulfuric acid during Fenton discoloration in this study. The experiments were conducted in 250-ml flasks, which were capped and shaken in a thermal oscillator tank with oscillation speed set at 160 rpm. The dosages of H2O2, ferric-salt, sulfuric acid and oxidation time are the operated parameters. These results show discoloration in the Fenton process are feasible. The efficiency was in the order FeSO4•7H2O>FeSO4 (NH4)2 SO4•6H2O The FeSO4 (NH4)2SO4•6H2O has larger effect for sulfuric acid dosage.