标准摘要
[中文适用范围]： 该测定是通过与氯化羟铵和氢氧化钾的混合物中释放的游离羟胺反应将羰基化合物转化为肟来进行的。 用盐酸溶液通过比色法或电位滴定法滴定过量的碱。 本方法适用于含有羰基化合物（特别是酮类，不包括甲基酮）的精油，这些化合物很难用ISO 1279规定的方法转化为肟。 本方法不适用于含有大量其他碱的酯的精油。 - 敏感成分。 [外文原描述]： 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.
英文名称Essential oils — Determination of carbonyl value — Free hydroxylamine method