| An understanding of the means by which certain compounds protect wood from fungal decay will aid in design of new preservatives. Therefore, research was done to determine the interactions of metal ions with phenolic compounds known to enhance wood durability. For this reason, a potentiometric titration method was used to study the chelation between Fe2+ and propyl gallate. Another class of compounds synthesized for study were hydroxychromones which should be good chelators due to their structural similarities to hydroxyflavones. Water insolubility precludes potentiometric titration of these compounds. However, their synthesis and characterization including crystallography of 5-hydroxychromone are reported. Morin, one of the osage orange flavonoid extractives, was sulphonated and the chelating ability of this derivative with Fe2+ was studied potentiometrically. It was shown that Fe3+ was reduced by propy gallate and sulphonated morin. Therefore, Fe3+ was not used in stability constant determination studies with these compounds. |
