Syntheses and Chelating Properties of Azothiopyrine Sulfonates

抄録

New water-soluble chelating agents, azothiopyrine sulfonates, which possess mercapto and azo groups as a chelate-forming site and a sulfonic acid group as a functional group providing water-solubility, were prepared. Their acid dissociation constants and chelate formation with metal ions were determined by a spectrophotometric method.