Detail of "13499-05-3"

Reference

Thermodynamics of fluoride complexes of zirconium and hafnium in aqueous solution

Thermodynamics of fluoride complexes of zirconium and hafnium in aqueous solution. Kozlovskii, E. V.; Vasil'ev, V. P.; Kokurina, G. L. (Ivanov. Khim.-Tekhnol. Inst., Ivanovo, USSR). Tezisy Dokl. - Vses. Chugaevskoe Soveshch. Khim. Kompleksn. Soedin., 12th, Volume 1, 44. Akad. Nauk SSSR, Sib. Otd., Inst. Neorg. Khim.: Novosibirsk, USSR. (Russian) 1975. CODEN: 34BFAN. 10026-11-6 and 7664-39-3 which are cas registry numbers of chemicals are mentioned. DOCUMENT TYPE: Conference CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) The heats of soln. of crystn. HfCl4 [13499-05-3] and ZrCl4 [10026-11-6] in aq. HF [7664-39-3] were detd. calorimetrically in a wide concn. interval of acid and salt. The data indicate that mononuclear fluoride complexes are formed and that hydrolysis of the Hf and Zr ions in negligible. By using literature data as well as that obtained in the laboratory, the changes in enthalpy, Gibbs free energy and entropy for the reaction M4+ + nF- .fwdarw. MFn4-n are obtained. The results are interpreted on the basis of the iceburg effect. .

Effect of the ionic composition of electrolytes on volatility of hafnium chloride (HfCl4) and the potential of metal deposition on a cathode

Effect of the ionic composition of electrolytes on volatility of hafnium chloride (HfCl4) and the potential of metal deposition on a cathode. Smirnov, M. V.; Salyulev, A. B.; Khudyakov, V. Ya. (USSR). Fiz. Khim. Elektrokhim. Redk. Met. Solevykh Rasplavakh, 3-8. Edited by: Stangrit, P. T. Akad. Nauk SSSR, Kol'sk. Fil.: Apatity, USSR. (Russian) 1984. CODEN: 52NYAC. DOCUMENT TYPE: Conference CA Section: 72 (Electrochemistry) The volatility of HfCl4 [13499-05-3] depends substantially on the ionic compn. of the melt. Isobars of the partial pressure of HfCl4 in satd. vapors of molten mixts. of HfCl4-MCl (M = Na, K, Rb, Cs) are presented. The dependence is shown of the vapor phase on the compn. of the molten mixts. at 827°. The change in the equil. electrode potential, E(Hf(IV)/Hf), as a function of the HfCl4 concn. in alkali metal chloride m. 827° is given (in V).