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Reagent Chemicals and Standards

Nature volume 142, page 776 (29 October 1938) | Download Citation



THERE are comparatively few books which deal with the standards and specifications for chemical reagents and, if only for this reason, the treatise under review1 would be acceptable ; it is, however, doubly welcome in that it provides the most complete treatment of the subject hitherto produced. Nearly five hundred substances are listed, these including many of the newer organic chemicals and indicators. Assays are provided in most cases for the major constituent as well as for the likely impurities, while tables are given of the maximum tolerance permitted for the latter. There is also a useful section on the preparation and standardization of volumetric solutions, together with extensive tables of equivalents and gravimetric factors.

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