In order to determine the effect of bleaching conditions on the physical and optical properties of pulps during the bleaching of CTMP with H2O2, 48 bleaching trials were carried out. After the analysis of the data obtained, the optimum bleaching conditions were as follows: H2O2 ratio 2.5-3%, Na2SiO3 ratio 3%, NaOH ratio 3%, NaOH/H2O2 ratio 0.75, MgSO4 rate 0.5%, reaction temperature 70ºC, EDTA rate 0.5%, reaction time 80 minutes and concentration 16%. Brightness, breaking length, burst and tear index of CTMP bleached with H2O2 were found to be 51.42%, 18.03%, 92.50% and 13.20% respectively, higher than those of unbleached CTMP.

In order to determine the effect of bleaching conditions on the physical and optical properties of pulps during the bleaching of CTMP with H2O2, 48 bleaching trials were carried out. After the analysis of the data obtained, the optimum bleaching conditions were as follows: H2O2 ratio 2.5-3%, Na2SiO3 ratio 3%, NaOH ratio 3%, NaOH/H2O2 ratio 0.75, MgSO4 rate 0.5%, reaction temperature 70ºC, EDTA rate 0.5%, reaction time 80 minutes and concentration 16%. Brightness, breaking length, burst and tear index of CTMP bleached with H2O2 were found to be 51.42%, 18.03%, 92.50% and 13.20% respectively, higher than those of unbleached CTMP.