✦ LIBER ✦

Composition and stability of the chelate between aluminium (III) and sodium alizarin 3-sulphonate: Spectrophotometric and Electrical Conductance Studies

✍ Scribed by Roshan Lal Seth; Arun K. Dey

Book ID: 105350737
Publisher: John Wiley and Sons
Year: 1963
Tongue: English
Weight: 402 KB
Volume: 19
Category: Article
ISSN: 1615-4150
DOI: 10.1002/prac.19630190501

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✦ Synopsis

Abstract

The composition and stability of aluminium‐alizarin 3‐sulphonate chelate has been studied by spectrophotometric and electrical conductance measurements. The red coloured chelate (λ~max~ 470 mμ) has a composition 1:2 (metal: chelating agent). The chelate is stable between pH 2.5 and 4.5. The values of log K as calculated by two different methods are 7.2 ± 0.3 and 7.5 ± 0.2 at 25°C (pH 3.5 ± 0.2). Suggestions have also been made about the position of the chelate ring in the metal chelate.

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