Reduction Method for Evaluation of Titanium Dioxide

Abstract

Penn a. WHILE investigating a more convenient method for the analysis of titanium paint pigment it was found necessary to develop a rapid, easy, and sufficiently accurate method for the determination of titanium for laboratory control purposes. Since the gravimetric methods are somewhat tedious and time-consuming, it was considered advisable to attempt a

Volumetric Determination of Iron and Titanium

“…Titanium dioxide, purity 98.62 per cent as determined by the cupferron method (10). (Spectrographic analysis gave no positive test for other reducible materials such as chromium and vanadium but did show presence of some magnesium which does not interfere.…”

“…A standard solution of titanium sulfate was prepared by dissolving titanium dioxide in concentrated sulfuric acid and ammonium sulfate. The solution was adjusted to an acidity of 3 to 4 N with respect to sulfuric acid, and analyzed by reducing the titanium, pouring through a zinc reductor, and receiving into a ferric alum solution (10). The reduction was repeated with solutions containing from 0.0203 to 0.2512 gram of titanium dioxide, the reductor was removed from the suction flask, and a rubber stopper containing a glass tube was fitted into the mouth of the flask with the end of the tube dipping into the solution.…”