ISO 1271-1983 精油 羰值的测定 游离羟胺法

标准号：ISO 1271-1983
中文标准名称：精油 羰值的测定 游离羟胺法
英文标准名称：Essential oils; Determination of carbonyl value; Free hydroxylamine method
标准类型：Y40
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：Y40
国际标准分类号：71.100.60
适用范围：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.