ISO-1279 › Essential oils -- Determination of carbonyl value -- Potentiometric methods using hydroxylammonium chloride

ISO-1279 - 3RD EDITION - CURRENT
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Gives two methods for the potentiometric determination of the carbonyl value of essential oils which contain carbonyl compounds. Method 1 is based on a cold oximation reaction with hydrxoylammonium chloride with exception of citronellal which need a low temperature to avoid cyclization phenomena and acetylization. Method 2 is based on a hot oximation reaction with hydroxylammonium chloride and applies to essential oils whose main constituents are ketones which are general oximable only with difficulty.

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Document Number

ISO 1279:1996

Revision Level

3RD EDITION

Status

Current

Publication Date

Dec. 15, 1996

Committee Number

ISO TC 54