Poisons, Their Effects and Detection / A Manual for the Use of Analytical Chemists and Experts

by Alexander Wynter Blyth

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(1) It will evolve SH₂ when treated with HCl, and at the same time pass into solution.[818]

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[818] By adding chloride of tin to a solution of chloride of antimony in sufficient quantity, and passing SO₂ through the liquid, the whole of the antimony can be thrown down as sulphide, whilst the tin remains in solution. Thus,—

9SnCl₂ + 2SbCl₃ + 3SO₂ + 12ClH = Sb₂S₃ + 9SnCl₄ + 6OH₂.

—Federow, Zeitschrift für Chemie, 1869, p. 16.

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(2) The solution evaporated to get rid of free HCl gives with water a thick cheesy precipitate of basic chloride of antimony. This may be seen if only a drop or two of the solution be taken and tested in a watch-glass.

(3) If tartaric acid be added to the solution, this precipitation does not occur.

(4) The solution from (3) gives an orange precipitate with SH₂.