【英文标准名称】: Essential oils; Determination of carbonyl value; Free hydroxylamine method
【原文标准名称】: 精油 羰值的测定 游离羟胺法
【标准号】: ISO 1271-1983
【标准状态】: 现行
【国别】: 国际
【发布日期】: 1983-12
【实施或试行日期】:
【发布单位】: 国际标准化组织(IX-ISO)
【起草单位】: ISO/TC 54
【标准类型】: ()
【标准水平】: ()
【中文主题词】: 化学分析;羰基化合物(无机);羰基化合物;含量测定;香精油;化学分析和试验
【英文主题词】: Carbonyl compounds (inorganic);Chemical analysis and testing;Determination of content;Essential oils
【摘要】: 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.
【中国标准分类号】: Y40
【国际标准分类号】: 71_100_60
【页数】: 4P.;A4
【正文语种】: 英语

关键字： ISO 1271