Original scientific paper

Reactions of Cations of the II Analytical Group with Iodide-ionand Ether in Presence of Hydrochloric Acid. Ill. Reaction of Arsenic

V. Vukčević-Kovačević ; institute of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Zagreb, Zagreb, Kukovićeva 1, Croatia, Yugoslavia
V. Fintić ; institute of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Zagreb, Zagreb, Kukovićeva 1, Croatia, Yugoslavia

Abstract

Besides antimony and bismuth, arsenic (Ill) ion also gives with iodide ion and ether in presence of hydrochloric acid a liquid reaction product, yet a greater concentration of iodide and of hydrochloric acid is needed than for the reaction of antimony and of bismuth respectively. The product is likely to be an etherate of a hydrate of the arsenious hydroiodic acid. If a drop of the product is cautiously introduced into water, hydrolysis occurs at the interface of the two liquid phases (water-reaction product), and the surface of the droplet becomes covered by a white firm film of arsenic trioxide. The reaction can serve as an identification test for arsenic, being specific and unusual in type.

Keywords

Hrčak ID:

245617

URI

https://hrcak.srce.hr/245617

Publication date:

25.3.1958.

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