ISO 1271:1983

Essential oils — Determination of carbonyl value — Free hydroxylamine method

Publication date: Dec 1, 1983

General information

Current stage: 90.93 Effective date: Jun 16, 2022

Originator: ISO

Owner: ISO/TC 54

Type: International Standard

ICS: 71.100.60

Languages: French English

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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

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