Ever since the introduction of electrolytic methods to manufacture sodium hydroxide and chlorine there has been a see-saw market demand for the two co-products, with one or the other being in higher demand and new uses sought for the other. With public concerns about chlorinated organics and the resulting reduc- tion in the use of elemental chlorine and hypochlorite in pulp bleaching led to a surplus of chlorine availability that continues to thi

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