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ISO 8660:1988

Caprolactam for industrial use — Determination of permanganate index — Spectrometric method

Apr 14, 1988
95.99   Withdrawal of Standard   Jun 6, 2002

General information

95.99     Jun 6, 2002

ISO

ISO/TC 61/SC 5

International Standard

71.080.30  

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Scope

Equal volumes of potassium permanganate solution are added to a carpolactam test solution and to a blank (water). After standing for a specified time the absorbance, at a wavelength of 420 nm, of the test solution and of the blank are compared in cells of 5 cm thickness. The permanganat index is the difference between the absorbance of the test sample and that of the blank, multiplied by 100/3. It is a conventional measure of the content of oxidizable impurities.

Life cycle

NOW

WITHDRAWN
ISO 8660:1988
95.99 Withdrawal of Standard
Jun 6, 2002

REVISED BY

PUBLISHED
ISO 8660:2002