Research Papers From the Kent Chemical Laboratory of Yale University volume 1
Research Papers From the Kent Chemical Laboratory of Yale University volume 1
Frank Austin Gooch
The book Research Papers From the Kent Chemical Laboratory of Yale University volume 1 was written by author Frank Austin Gooch Here you can read free online of Research Papers From the Kent Chemical Laboratory of Yale University volume 1 book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Research Papers From the Kent Chemical Laboratory of Yale University volume 1 a good or bad book?
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BY D. ALBERT KREIDER * VARIOUS methods for the preparation of perchloric acid have been developed through the long felt want of a process in which the elements of time and danger would be reduced to a minimum and the product increased to quantities commen- surate with the growing use of the acid in analytical chemistry. Most of these methods have been found impracticable because of the incidental formation of the dangerously explosive oxides of chlorine, or the time required in refining the pro...duct from the impurities introduced with the reagents employed. Doubtless the best process thus far offered is that of Caspari, f which, however, is to an objectionable degree exacting of time and labor. The product has to be treated and re-treated for the removal of potassium and then for the extraction of the hydro-fluo-silicic-acid and at several stages is for this purpose to be left standing for from twenty-four to forty-eight hours. Under the most favorable circumstances it could not be prepared in less than five or six days, and during a great many hours of that time it requires close attention.
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