Heteropoly Salts

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Abstract
Summary: Two salts, tricaesium phosphotungstate and dicaesium hydrogen phosphotungstate, have been isolated and characterized. Methods for their preparation in the pure State are given. Similary, the trialkali and dialkali hydrogen phosphotungstates of rubidium, potassium, ammonium, sodium, and lithium have also been isolated and prepared in the pure state and a study made of some of their properties. Solubility data in water andnitric acid have been obtained at 20° C for Cs, Rh, K, NH4, and H phosphotungstates together with water solubility data for the sodium and lithium salts. The preparation and some properties of a number of relatively insoluble phosphotungstates namely, those of thallium(I), silver, mercury(I), and barium are described. Some organic phosphotungstates, the tetraphenyl arsonium salts, and a series of substituted amine and diamine salts have also been prepared.

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