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The molecular structures of benzoic acids and their inhibitive action on 3S aluminium in hydrochloric acid solution

✍ Scribed by S. C. Makwana; N. K. Patel; J. C. Vora

Publisher
John Wiley and Sons
Year
1973
Tongue
German
Weight
227 KB
Volume
24
Category
Article
ISSN
0947-5117

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✦ Synopsis

Abstract

The influence of phenol, p‐cresol, o‐cresol, m‐cresol, pyrogallol, résorcinol and P‐thiocresel on the corrosion of A1 3 S in 0.5 n hydrochlorid acid has been studied; the cathodic behaviour was investigated by a galvanostatic method. The efficiency of the inhibitors depends from the substituents and their position in the ring. It decreases in the order p‐thiocresol — py‐rogallol — resorcinol — phenol—p‐cresol — m‐cresol — o‐cresol. The inhibitors are preferentially adsorbed at the cathodic sites.

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