Showing papers on "Sodium chlorate published in 1969"
60 citations
TL;DR: The diffusion coefficients of sodium chlorate and lithium chlorate in water have been determined using the Stokes' diaphragm technique as mentioned in this paper, and the diffusion coefficients have been treate...
Abstract: The diffusion coefficients of sodium chlorate and lithium chlorate in water have been determined, using the Stokes' diaphragm technique. The diffusion coefficients of the solutions have been treate...
23 citations
TL;DR: In this paper, the effect of sulfate ions on the growth of NaClO3 faces was investigated and the heat of adsorption on the active centers of growth for both types of faces was derived from kinetic experimental data.
Abstract: The effect of sulfate ions on the growth of NaClO3 faces (100) and (111) has been investigated. The heat of adsorption on the active centers of growth for both types of faces has been derived from kinetic experimental data. Direct adsorption measurements have been performed which gave the heat of adsorption on the whole surface of each type of faces. A possible explanation of the experimental results is given.
[Russian Text Ignored]
19 citations
TL;DR: The vapor pressures of solutions of sodium chlorate and of lithium chlorate in water and in solvents consisting of 44.5% dioxane and 55% water, at 25 °C, were deterministic as discussed by the authors.
Abstract: The vapor pressures of solutions of sodium chlorate and of lithium chlorate in water and in solvents consisting of 44.5% dioxane–55.5% water and of 64.5% dioxane–35.5% water, at 25 °C, were determi...
16 citations
TL;DR: The rotatory power of a mixed crystal of composition 81.7% sodium chlorate and 8.3% sodium bromate by weight has been measured in the visible and ultraviolet region of the spectrum as discussed by the authors.
9 citations
3 citations
TL;DR: The osmic acid catalyzed oxidation of p-benzoquinone by sodium chlorate has long been recognized to yield a dimeric substance as mentioned in this paper, and by using progressively more vigorous conditions of acetylation, it has...
Abstract: The osmic acid catalyzed oxidation of p-benzoquinone by sodium chlorate has long been recognized to yield a dimeric substance. By using progressively more vigorous conditions of acetylation, it has...
2 citations
TL;DR: Perchlorate present in chlorate solutions is determined gravimetrically as tetraphenylphosphonium perchlorate after destruction of chlorate by addition of hydrochloric acid.
2 citations
TL;DR: The conductances, densities, and viscosities of sodium chlorate and of lithium chlorate in the solvents 44.5% dioxane, 55.5%, water and 64.5%.
Abstract: The conductances, densities, and viscosities of sodium chlorate and of lithium chlorate in the solvents 44.5% dioxane–55.5% water and 64.5% dioxane–35.5% water were determined, at 25 °C, almost up ...
2 citations
Patent•
23 Dec 1969
TL;DR: In this paper, an inorganic base is added to reduce the hypochlorite level in an aqueous solution withdrawn from an electrolytic chlorate production cell and the content is preferably reduced to less than 0A2 gram per litre by this process.
Abstract: 1,175,352. Removing hydrochlorites from alkali metal chlorate solutions. ELECTRIC REDUCTION CO. OF CANADA Ltd. 6 Jan., 1967 [8 Dec., 1965], No. 52157/65. Heading C1A. Alkali metal chlorates are produced by heating an aqueous solution containing hypochlorous acid and alkali metal hypochlorite at a temperature above 65‹ C. while maintaining the pH of the solution between 4A5 and 8A0. The preferred temperature range is 80-100‹ C. and the preferred pH range is 6A8-6A9. This process is particularly designed to reduce the hypochlorite level in an aqueous solution withdrawn from an electrolytic chlorate production cell and the hypochlorite content is preferably reduced to less than 0A2 gram per litre by this process. Further reduction may be accomplished, in the conventional manner, by adding urea, prior to recovery of sodium chlorate from the solution. The pH may be controlled by addition of an inorganic base, preferably an alkali metal hydroxide, especially one wherein the alkali metal cation is the same as that of the hypochlorite.
1 citations
01 Jan 1969
TL;DR: In this paper, a laser Raman spectrometer has been used to study the variation of the frequencies and half-widths as a function of temperature (100 to 450°K) of five lines in the Raman spectrum of a sodium chlorate single crystal.
Abstract: A laser Raman spectrometer has been constructed. The system includes an optimized focused geometry for illuminating the sample and collecting the scattered radiation. This system has been used to study the variation of the frequencies and half-widths as a function of temperature (100 to 450°K) of five lines in the Raman spectrum of a sodium chlorate single crystal. The 68, 134, and 180 cm lines represent vibrations involving relative motion of the sodium and chlorate ions, while the 486 and 938 cm" lines represent vibrations involving only internal motions of the chlorate ion. A simple form of Grllneisen's law seems adequate to describe the variation of the frequency as a function of volume. It was found that the product of the coefficient of expansion and the Grtlneisen constant was constant over the temperature range studied. This implies that the logarithm of the Debye temperature is a linear function of temperature. The Grtlneisen constant for the low frequency vibrations was found to be quite different from the constant for the chlorate vibrations. If one allows for variation of compressibility with temperature, a general description of the half-width variation can be described by a simple statistical model.