Solvent extraction behaviour of thiocyanic acid.
The solvent extraction behaviour of thiocyanic acid with isobutyl methyl ketone and xylene as solvents is described. In the ketone system the thiocyanic acid is solvated in the organic phase to give a complex with a proposed composition of HSCN. 2IBMK. Deviations from ideal behaviour, which can be attributed to variations in the activity coefficient of the acid in the aqueous phase, are shown.
Preparation of aqueous solutions of thiocyanic acid and their stability
ZusammenfassungVerschiedene Verfahren zur Herstellung von wäßrigen HNCS-Lösungen wurden untersucht. Hochreine Lösungen (≥ 99%) können durch Reaktion von äquimolaren Mengen Ba(NCS)2 und H2SO4 und anschließende Abtrennung des BaSO4 durch Zentrifugieren hergestellt werden. Bei 4° C sind 1–2 M Lösungen 10–20 Tage lang beständig.SummaryVarious procedures for the preparation of aqueous HNCS solutions have been investigated. Reaction of equimolar amounts of Ba(NCS)2 and H2SO4, and subsequent separation of BaSO4 by centrifugation, yields highly pure (≥ 99%) HNCS solutions. When kept at a temperature of 4° C, 1–2 M solutions are stable for a period of 10–20 days.
Performance Evaluation of Fuzzy Routing Algorithms for a New Fuzzy Mixed Metric Approach
Optimizing routing decisions has been an important subject in research of communication networks. The present paper is introducing a new fuzzy mixed metric approach, which takes routing decisions based on fuzzy costs in parallel to crisp cost of other metrics. The present paper evaluates the new fuzzy approach for its performance. The paper first describes the new fuzzy approach and the fuzzy routing algorithms developed for the approach and then the performance is evaluated both in empirical and analytical terms to show its advantages over the previous fuzzy approaches and traditional link- state routing approach. The paper analyzes the performance for different cases to show the efficacy of load on delay. The present paper bargains with three such cases.