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New analytical reactions with anionic and cationic wetting agents

✍ Scribed by Steigmann, A.

Publisher
Wiley (John Wiley & Sons)
Year
1947
Weight
292 KB
Volume
66
Category
Article
ISSN
0368-4075

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✦ Synopsis

Abstract

The orthosilicates and metaphosphates of cetyltrimethyl‐ammonium bromide (“Cetavlon”)or of “Sapamine KW 200%,” absorb acid dyes and acid spot test reagents and therefore provide analytical “trace catchers.” “Cetavlon” also precipitates mercury, gold and platinum, or, rather, their anionic complexes (chloro‐aurates and platinates) from slightly acid or neutral solutions of the metal chlorides. Spot test papers with sapamine iodide are very selective for platinum and palladium and more sensitive than those with 2‐thiolbenziminazole. The oxidation of aromatic amines is greatly influenced by anionic wetting agents.

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