Showing papers on "Sodium chlorate published in 1976"
Patent•
26 Oct 1976TL;DR: In this paper, a method to produce chlorine dioxide from sodium chlorate by reacting the chlorate with HCl was described, and the method consisted in forming in a reaction vessel an aqueous reaction medium containing at least about 5.5 moles per liter of the Sodium chlorate, sufficient HCl to provide an acid normality of at least 0.002, and sufficient sodium chloride to saturate the reaction medium; boiling a reaction medium at a temperature of up to about 100° C; and withdrawing a mixture containing chlorine dioxide gas, chlorine gas and water vapor from
Abstract: A method is disclosed to produce chlorine dioxide from sodium chlorate by reacting the chlorate with HCl. The method comprises forming in a reaction vessel an aqueous reaction medium containing at least about 5.5 moles per liter of the sodium chlorate, sufficient HCl to provide an acid normality of at least about 0.002, and sufficient sodium chloride to saturate the reaction medium; boiling the reaction medium at a temperature of up to about 100° C; and withdrawing a mixture containing chlorine dioxide gas, chlorine gas and water vapor from the reaction vessel.
16 citations
TL;DR: In this paper, the conjecture of Bijvoet that in the solid solution of these halates, the crystalline configuration would continue itself, has been directly verified by two approaches: (i) by optical rotation measurements on single crystals which show an annulling trend in proportion with composition and (ii) by measuremerts for several reflections from a single crystal (rich in chlorate) which shows an agreeable trend with calculated values for chlorate.
Abstract: Sodium chlorate and sodium bromate crystals of thes ame structural configuration have opposite senses of optical rotation It is also known that these halates exhibit continuous miscibility in solid solution In the present work, the conjecture of Bijvoet that in the solid solution of these halates, the crystalline configuration would continue itself, has been directly verified by two approaches: (i) by optical rotation measurements on single crystals which show an annulling trend in proportion with composition and (ii) by measuremerts of Bijvoet inequality for several reflections from a single crystal (rich in chlorate) which shows an agreeable trend with the calculated values for chlorate
9 citations
TL;DR: In this article, the elastic constants of single crystals of bromate have been evaluated using 10 MHz ultrasonic pulse echo superposition technique and the results showed that the present room temperature values agree closely with the recent values of Gluyaset et al. but the other earlier measurements show some scatter.
Abstract: The elastic constantsC 11,C 12 andC 44 of sodium bromate single crystals have been evaluated using 10 MHz ultrasonic pulse echo superposition technique. The values areC 11=5.578,C 12=1.075,C 44=1.510 (×1010 N/m2) at 290 K and 6.35, 1.98 and 1.65 (×1010 N/m2) at 77 K. The present room temperature values agree closely with the recent values of Gluyaset al. but the other earlier measurements show some scatter. A comparison between the elastic constants of sodium bromate and sodium chlorate is also made.
7 citations
TL;DR: In this article, the coupling of two isotopic polariton modes in sodium chlorate was studied experimentally by laser Raman spectroscopy and the observed line shapes were fitted on the basis of the theoretical treatment given by Benson and Mills.
4 citations
TL;DR: In this article, a special form of additivity of polarisability is assumed in which the asymmetric distribution of the anions around the cation is considered, and a formula has been proposed for the additivity in solid solutions and this is found to fit the data for optical rotation in mixed crystals of NaClO 3 -NaBrO 3 of different compositions.
3 citations
TL;DR: In this article, the magneto-optical rotary dispersion exhibited by mixed crystals of sodium chlorate and sodium bromate has been measured, and the measured data could not be accounted on the basis of usual additive laws.
Abstract: The magneto-optical rotary dispersion exhibited by mixed crystals of sodium chlorate and sodium bromate has been measured. The measured data could not be accounted on the basis of usual additive laws. Assuming that in a solid solution a cation is surrounded by dissimilar anions, an expression for the Verdet constant of the mixed crystal has been arrived at. This formula explains the observed data well.
3 citations
Patent•
02 Jul 1976
TL;DR: In this paper, a paper paste is produced by contacting a cellulosic fibre with a paste forming liquor contg. Na2S and NaOH, sepg. the paste from the used liquor and regenerating the liquor to obtain a white liquor which is recycled as part of the liquor added to the fibres together with added Na2SO4 to compensate for the loss of soda and S, and bleaching using chlorine dioxide and purifying the paste, the ClO2 is formed by reacting NaClO3 with HCl in the presence of H 2SO4 and a
Abstract: In a process in which a paper paste is produced by contacting a cellulosic fibre with a paste forming liquor contg. Na2S and NaOH, sepg. the paste from the used liquor and regenerating the liquor to obtain a white liquor which is recycled as part of the liquor added to the fibres together with added Na2SO4 to compensate for the loss of soda and S, and bleaching using chlorine dioxide and purifying the paste, the ClO2 is formed by reacting NaClO3 with HCl in the presence of H2SO4 and a mixt. of NaCl and Na2SO4 is recovered, the Na2SO4 being used to supply the Na and the S as above. The amount of feedstock for making the ClO2 is reduced compared with prior art and since the NaCl is sepd. from the Na2SO4, no build up of salt occurs to produce a dead charge.
1 citations