A database named SEDATA (Solvent Extraction Database) has been constructed
in the framework of an internet compatible software for the use of the rese
archers and engineers engaging for solvent extraction of metal ions. In the
database have been compiled about 17,000 numerical data concerning extract
ion equilibria for 82 metal ions as well as the related information about t
he experimental conditions and reference description. It is accessible via
World Wide Web (http://sedatant.chem.sci.osaka-u.ac.jp/).