“…It is formed from the reaction of hypochlorous acid with chlorite ions (Ni et al, 1993;Germgard et al, 1981;Asplund and Germgard, 1991;Lindgren and Nilsson, 1975;Bergnor et al, 1987). Chlorate does not react with the pulp and also represents a loss of bleaching potential (Nilsson and Sjöström, 1974;Rapson and Anderson, 1977;Reeve and Rapson, 1981;Germgrad et al, 1981;Bergnor et al, 1987;Reeve, 1996). Chlorate formation is proportional to chlorine dioxide consumption and is strongly dependent on the bleaching pH.…”