Rates of Solution of Limestone Using the Chelating Properties of Versene (EDTA) Compounds

Abstract

Versene (ethylenediaminetetraacetic acid) solutions with five different alkali metals or radicals substituted on the basic reagent were compounded for a study in which a range of concentration, temperature, and pH value were variables used in a series of solution rate tests on limestone blocks. These solution rates compared favorably with those of weak acids. Qualitative spectrographic analyses were used to ascertain the metals chelated by the versenate solutions.