Journal of the Society of Chemical Industry, Vol. 23

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Excerpt from Journal of the Society of Chemical Industry, Vol. 23: A Record for All Interested in Chemical and Allied Manufactures, July 15, 1904Borates insoluble in water are dissolved in dilute hydro chloric acid, in the cold or with a re¿ux condenser, and treated as in the foregoing.This method will not give accurate results when alu minium salts are present, as the solution when neutral to methyl orange will contain free alumina, which will combine with the alkali when titrating with phenolphthalein and glycerol, and thus be calculated as boric acid. Iron salts, when present in considerable proportion, also interfere by obscuring the colour reactions of the indicators. There appears to be no combination of indicators known which will serve to prevent this error, and it therefore becomes necessary to separate the iron and aluminium from the solution before titrating.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.