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Journals and Conferences
Beryllium can be precipitated from homogeneous solution as a dense and easily filterable precipitate by the hydrolysis of urea, in the presence of sulphate. The method has been applied to the gravimetric determination of beryllium as oxide. The nature of the precipitate thus obtained has been examined by thermogravimetric, infrared, photomicrographic and… (More)
A simple and accurate method is described for the determination of degree of metallization in reduced iron oxide ores. Both metallic iron and total iron are determined in a single sample. The metallic iron is selectively dissolved in copper sulphate solution and the oxides are filtered off. The filtrate is titrated with potassium dichromate solution. The… (More)
Beryllium can be precipitated as a dense and easily filterable precipitate in presence of succinate by the urea hydrolysis technique. Calcium, magnesium and manganese do not interfere to the extent that they do in the ammonia precipitation. One advantage over the basic sulphate method is that the oxide is obtained at a considerably lower temperature.… (More)
Beryllium oxinate has been proeipitated from homogeneous solutions and the nature of the complex has been studied by thermo gravimetric, infrared and X-ray methods. A structural formula has been proposed on the basis of the results.
A procedure is described for the estimation of metallic iron, ferrous oxide, and ferric oxide when present together. The sample is treated with bromine dissolved in ethanol, and filtered. Iron in the filtrate is titrated iodometrically, and corresponds to the metallic iron present in the mixture. The oxide residue is dissolved in hydrochloric acid under a… (More)