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ISO 1271:1983

Essential oils — Determination of carbonyl value — Free hydroxylamine method

Dec 1, 1983

General information

90.93     Jun 16, 2022

ISO

ISO/TC 54

International Standard

71.100.60  

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Scope

The determination is carried out by converting the carbonyl compounds to oximes by reaction with free hydroxylamine liberated in a mixture of hydroxylammoniumchloride and potassium hydroxide. The excess alkali is titrated with hydrochloric acid solution, either colorimetrically or potentiometrically. The method is applicable to essential oils which contain carbonyl compounds (especially ketones, excluding methylketones) which are difficult to convert to oximes by the method specified in ISO 1279. The method is not applicable to essential oils which contain substantial amounts of esters of other alkali-sensitive constituents.

Life cycle

NOW

PUBLISHED
ISO 1271:1983
90.93 Standard confirmed
Jun 16, 2022

National adoptions

SRPS ISO 1271:1992  
ISS

Essential oils — Determination of carbonyl value — Free hydroxylamine method

90.93   Standard confirmed

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