Sample (R4 from B1)

Aq. sol. NaOH-H₂O₂ in the first bleaching (mL)

Temperature (˚C)

Time (h)

Stirring (rpm)

Suspension initial pH

pH of residues/ filtrates after filtrations/washings with dist. water

SCB24-Na-I

300

55˚C - 60˚C

2

30

ca. 12

ca. 7

SCB24-Na-II

300

55˚C - 60˚C

2

30

ca. 12

ca. 7