Zinc and cadmium form negatively charged chloride complexes which are adsorbed by the strongly basic anion exchange resin Dowex 1. Maximum adsorption of zinc and cadmium is obtained in 0.12V hydrochloric acid containing 100 grams of sodium chloride per liter.In this medium most elements with which zinc and cadmium are associated in metals and minerals are not

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Petroleum ether extraction did not change the composition of the precipitate residue, even in the presence of a water phase.A material of the composition of aluminum diresinate was isolated from size precipitates and sized papers by petroleum ether extraction.Petroleum ether extraction of size precipitates prepared from sizes of 0 to 75% free rosin left a residue of the approximate composition of aluminum diresinate in each case.

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