Contributions to the Chemistry of Indium. IV. The Effects of Certain Poly-hydroxy Non-electrolytes upon the Precipitation of Hydrous Indium Hydroxide.

Contribitions to the chemistry of indium. VI. The effects of certain hydroxy anions upon the precipitation of hydrous indium hydroxide

“…The source of hydrated indium ion was a solution 0.0500 M in indium sulfate (8,9). Tenth-normal sodium and potassium hydroxides and sulfuric acid, prepared and standardized by the usual methods, were the titrating agents.…”

“…of indium sulfate solution and varying quantities of the hydroxy salts in total volumes of 40 ml. according to the method previously described (9), except that changes in pH were followed with the glass electrode of a Beckman Laboratory Model pH Meter. Results typical of those obtained are plotted in figures 1 to 4 as pH against the mole ratio of added hydroxyl ion to indium ion initially present at varying mole ratios (R) o{ added hydroxy salt to indium ion taken.…”

“…Inasmuch as the electrometric titration technique which has recently been employed in studies upon some of the characteristics of hydrous indium hydroxide (8,9) has in the past yielded information relative to the behaviors of a number of metallic salt solutions when treated with alkali in the presence of hydroxy anions (1,2,10 to 14), it was deemed worthy of application to similar systems containing an indium salt,…”