Zhang Dong-yan
2007
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Journal
Applied Chemical Industry
Abstract
On the basis of various reaction temperature,reaction time,and mole ratio of reactant,the amino-carboxyl group chelating agent EDDHA and its iron chelate EDDHA-Fe was synthesized from phenol,glyoxylic acid and ethylenediamine with orthogonal test,and the optimum condition are as follows:reaction temperature 75 ℃,reaction time 4 h,phenol ∶glyoxylic acid(mole ratio) is 1.2 ∶1.0,the yield of product is 87.0% and content is 98.7%.