Chemical Properties and Analysis of Refractory Compounds / by E. E. Kotlyar, T. N. Nazarchuk (auth.), G. V. Samsonov

By E. E. Kotlyar, T. N. Nazarchuk (auth.), G. V. Samsonov (eds.)

Show description

Read Online or Download Chemical Properties and Analysis of Refractory Compounds / Khimicheskie Svoistva I Metody Analiza Tugoplavkikh Soedinenii / Химические Свойства И Методы Анализа Тугоплавких Соединений PDF

Similar chemical books

Adsorbents Fundamentals and Applications

Adsorption offers to play an quintessential position in different destiny power and environmental applied sciences, together with hydrogen garage, CO elimination for gasoline telephone expertise, desulfurization of transportation fuels, and applied sciences for assembly better criteria on air and water toxins. Ralph Yang's Adsorbents offers a unmarried and entire resource of data for all advertisement and new sorbent fabrics, proposing the basic rules for his or her syntheses, their adsorption houses, and their current and capability purposes for separation and purification.

Chemical Biology of the Tropics: An Interdisciplinary Approach

The mystique of the rainforest has captured the imaginations of generations of teens, explorers, authors, and biologists. it's a smooth atmosphere whose myriad sounds and scents, whose vibrancy of existence, is balanced by means of consistent cycles of dying and rot. it's a position of fierce pageant the place strange partnerships are solid and artistic survival innovations are the norm.

Adsorptive Bubble Separation Techniques

Foxing to few pages and web page edges. Pages are fresh and binding is tight. strong booklet.

Additional info for Chemical Properties and Analysis of Refractory Compounds / Khimicheskie Svoistva I Metody Analiza Tugoplavkikh Soedinenii / Химические Свойства И Методы Анализа Тугоплавких Соединений

Example text

The arsenic thus separating is distilled into the "cold" part of the ampoule. The resultant boron-arsenic compounds are characterized by great chemical stability. Verification of the solubility of B6As in several acids (Table 2) showed that none of the acids or acid mixtures taken dissolved the hexaboride completely. On prolonged boiling, boron arsenide is almost completely soluble in nitrose; however, the presence of an insoluble residue and the long period of boiling (8-10 h) make this method undesirable for analytical purposes.

Conc. HaPO, (1:1) HF conc. 5 - A similar kind of dissolution occurs in a mixture of sulfuric and nitric acids. We may suppose that in this case Ti0 2 or Ti(S04h is formed, and this then dissolves with the formation of titanyl sulfate TiOS04, which exists in acid solutions. In order to elucidate the composition of the white deposit we attempted to separate it from the main solution, but this proved impossible. Mter separation of the deposit on the Schott filter and washing with hot distilled water, the residue completely dissolved in the latter.

This method was used by Samsonov and Titkov [8], who took a 80-100-fold excess. Tests showed that on reducing the exceE'S of flux by a factor of two, complete decompOSition of the sample, with dissolution in hot water, was also achieved. 4 g/cma) in 100 ml of solution. The preCipitation and coagulation occupied no more than 20-25 min. 1 by means of NH3 (1:1) the bismuth was titrated with Complexone III, using xylenol orange as indicator. The precipitation of the phosphate ion with bismuth nitrate may be carried out after the potentiometric determination of boron by titration with alkali and mannitol.

Download PDF sample

Rated 4.45 of 5 – based on 35 votes