Abstract
DURING experiments on the effect of addition of electrolytes on emulsions of xylene in water stabilized by sodium oleate, we noticed that the xylene thrown out by copper salts was a clear, bright green or blue colour. The same colour was obtained if benzene, even the purest benzene, was used instead of xylene. On adding a quantity of copper salt equivalent to the sodium oleate present in the emulsion, benzene began to separate immediately and a certain amount of inverted emulsion was also formed, which, however, broke after some time. The separated water contained copper. On evaporation of the benzene a dark green, waxy solid was obtained, which on analysis gave a ratio of copper to oleate of 1:3·4 and contained some sodium. Dilute solutions of this solid in benzene were blue, more concentrated ones a bright emerald green.
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References
Bhatnagar, Kapur, and Hussain, Proc. Ind. Acad. Sci., 9, A, 143 (1939).
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MARTIN, A., HERMANN, R. Action of Copper Salts on Emulsions Stabilized by Sodium Oleate. Nature 144, 479 (1939). https://doi.org/10.1038/144479b0
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DOI: https://doi.org/10.1038/144479b0
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