Abstract

Aluminium can be determined titrimetrically using Cyclohexane-1, 2-Diaminetetraacetic acid (CDTA) in the presence of chromate. The CDTA complex is formed almost instantly at room temperature. Aluminium and Chromium are brought into solution by alkaline fusion or wet oxidation of the leather ash and the aluminium deter mined by back-titration of an excess of CDTA with zinc sulphate. Comparison was made between the CDTA procedure and the Oxine method on an aluminium chloride solution.