On the isolation of the missing sulphur urea / by J. Emerson Reynolds.

Date:
[1869]
Catalogue details

Licence: Public Domain Mark

Credit: On the isolation of the missing sulphur urea / by J. Emerson Reynolds. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    15 General Observations.—It will be easily perceived from the foregoing statements that the new urea described in this memoir must now take the place hitherto assigned to the sulphocyanate of ammonium, the latter salt falling back into its true position as the strict chemical analogue of cyanate of ammonium. This change of idea is rendered necessary since some chemists —finding that Liebig and Vdlckel failed in converting the sulphocyanate of ammonium into the sulphur urea—’have regarded the latter body and the sulphocyanate as identical, not only in centesimal composition, but in constitution likewise. If we regard the oxygen urea as carbamide we must consider the sulphur urea as sulphocarbamide— and we then have the new body as the primary of the following compound ureas, which have been discovered from time to time by Dr. Hofmann in his fine researches on the polyammonias. Sulphocarbamide .... Allyl-sulphocarbamide Allyl-naphtyl-sulphocarbamide E thy 1-ally 1-sulpho carbamide Phenyl-sulphocarbamide (CS)'^ (CS) 1 c,H, In, (CS)' C3H, C,„H, (CS) CA C3H5 Ho (CS)'