TRI- OR TETRA-2-HYDROXYBENZYL-1,2-DIAMINOALKANE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND THEIR USE FOR EXTRACTION OF GALLIUM

摘要

Gallium is efficiently extracted from strongly basic solutions containing aluminates by extractants having the tris- and/or tetrakis(2-hydroxybenzyl)-1,2-diaminoethane chemical moiety. The diaminoethane derivative may be used together with a hydrocarbyl 8-hydroxyquinoline and/or with a tertiary carboxylic acid.