ISO 1618:1976

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Aluminium oxide primarily used for the production of aluminium — Determination of vanadium content — N-Benzoyl-N-phenylhydroxylamine photometric method

Published By	Publication Date	Number of Pages
ISO	1976-09	6

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Categories: 71.100.10 - Materials for aluminium production, ISO

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Description

The method is applicable to products having vanadium contents between 0,0003 % (m/m) and 0,016 % (m/m), provided that the content of chromic oxide and titanic oxide does not exceed 0,002 % (m/m) and 0,006 % (m/m), respectively. The principle consists in a previous oxidation of the vanadium contained in the test sample to vanadium(V) by patassium permanganate in sulphuric acid solution. Formation of the vanadium-N-benzoyl-N-phenylhydroxylamine complex. Extraction of the violet coloured complex with chloroform in hydrochloric acid*solution. Photometric measurement of the coloured complex at a wavelength of about 524 nm.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	1976-09
Pages Count	6
Language	English
Edition	1
File Size	358.4 KB
ICS Codes	71.100.10 - Materials for aluminium production

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ISO 1618:1976

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