Reference number
ISO 1279:1996
ISO 1279:1996
© ISO 2025
International Standard
ISO 1279:1996
Essential oils — Determination of carbonyl value — Potentiometric methods using hydroxylammonium chloride
Edition 3
1996-12
1996-12
ISO 1279:1996
5880
Published
(Edition 3, 1996)
This publication was last reviewed and confirmed in 2022.
Therefore this version remains current.
Abstract
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.
Life cycle
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Previously
WithdrawnISO 1279:1973
WithdrawnISO 1279:1984
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Now