VERSENOL™ 120

A sequester of Fe/Mn/Cu designed to improve pulp bleachability, control bleach degradation, reduce brightness reversion (TCF Process). It is an aqueous solution of the trisodium salt of N-(hydroxyethyl) ethylenediaminetriacetic acid. It has some unique properties that make it worth considering for use: (1) to control iron at pH 8-10; and (2) under more acidic conditions (i.e., low pH) where other chelants are less soluble.