Synopsis
Excerpt from Technical Methods of Chemical Analysis, Vol. 1: Part II
OF the methods used for the determination of potassium, that of Fresenius, in which the potassium is separated as potassium platini chloride, is the most important, and has found general acceptance in the potassium salt industry. Amongst other methods, the determina tion of potassium as perchlorate, which has been very thoroughly worked out: by Wense 1 and by Caspari,2 may be regarded as of equal value with the older platinum method, a statement substantiated by the fact that the International Congress for Applied Chemistry (1903) decided to class it as an international method of determination, together with the Fresenius method.
A. The Potassium platinichloride method - In the separation of potassium as potassium platinichloride by Fresenius' shortened method, which has been thoroughly worked out by Precht,3 the use of pure platinic chloride solution is of the utmost importance. It must be free from platinous chloride and oxides of nitrogen, and contain at most only a small quantity of free hydrochloric acid. Precautions must also be taken to guard against the introduction of other impurities, such as sulphuric acid from impure reagents, and potassium platinichloride from the incomplete washing of recovered platinum from platinum residues. The preparation of the platinic chloride solution is described below.
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Paperback. Condition: New. Print on Demand. This book is an advanced guide to the analysis of potassium salts, which are compounds that contain potassium combined with other elements such as chlorine or sulfate. The author provides detailed instructions for the quantitative determination of potassium in various types of potassium salts, employing well-established methods like the widely used platinum and perchloric acid methods. Special attention is given to the accurate precipitation of sulfate ions as barium sulfate prior to potassium analysis. The book also covers the analysis of crude salts, intermediate products, and final products, providing a comprehensive resource for those involved in the production and quality control of potassium salts. The detailed and practical approach makes this book an invaluable tool for chemists and technicians working in the field. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9781334336546_0
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