E. Owens, J. Yoe
1960
Citations
0
Influential Citations
4
Citations
Journal
Analytica Chimica Acta
Abstract
Summary 2-Quinizarinsulfonic acid (sodium salt) and 2-phenoxyquinizarin-3,4′-disulfonic acid (dipotassium salt) can be successfully used as metal indicators in the titration of thorium with disodium EDTA. The latter compound is recommended in preference to the former and Alizarin Red S as an indicator because it permits the titration to be made over a wider ph-range.