NS-EN ISO 3657:2013
动植物油脂 皂化值的测定（ISO 3657:2013）

被代替

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标准号

NS-EN ISO 3657:2013

发布

2013年

发布单位

SCC

替代标准

NS-EN ISO 3657:2020

当前最新

NS-EN ISO 3657:2020

 

 

适用范围

  Full Description ADOPTED_FROM:EN ISO 3657:2013 ISO 3657:2013 specifies a method for the determination of the saponification value of animal and vegetable fats and oils. The saponification value is a measure of the free and esterified acids present in fats and fatty acids. The method is applicable to refined and crude vegetable and animal fats. If mineral acids are present, the results given by this method are not interpretable unless the mineral acids are determined separately. The saponification value can also be calculated from fatty acid data obtained by gas liquid chromatography analysis as given in an annex. For this calculation, it is necessary to be sure that the sample does not contain major impurities or is thermally degraded.

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