Abstract
IN connexion with his communication on the influence of heavy water on the colour of hydrated salts (NATURE, March 28, p. 534), Dr. James Bell writes that it appears that the observation that copper sulphate pentadeuterate solutions and crystals are more green in tint than those of the pentahydrate had already been made. H. Perperot and F. Schacherl, in an account of an investigation of the vapour tensions of the different deuterates of copper sulphate (J. de Physique et le Radium, vii, 6, 439; Oct. 1935), mention this difference in colour, and state that they have undertaken an examinationof the absorption spectra of the solutions. As it is unusualfor work on this field to be published in that journal, and an abstract has not yet been available, this paper was inadvertently overlooked.
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Heavy Water and the Colour of Hydrated Salts. Nature 137, 698 (1936). https://doi.org/10.1038/137698d0
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DOI: https://doi.org/10.1038/137698d0