NF EN ISO 3657
Animal and vegetable fats and oils - Determination of saponification value
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.
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.
<p>This International Standard 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.</p> <p>The method is applicable to refined and crude vegetable and animal fats.</p> <p>If mineral acids are present, the results given by this method are not interpretable unless the mineral acids are determined separately.</p>
<p>This document 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.</p> <p>The method is applicable to refined and crude vegetable and animal fats.</p> <p>If mineral acids are present, the results given by this method are not interpretable unless the mineral acids are determined separately.</p> <p>The saponification value can also be calculated from fatty acid data obtained by gas chromatography analysis as given in Annex B. For this calculation, it is necessary to be sure that the sample does not contain major impurities or is thermally degraded.</p>
- Avant-proposiv
-
1 Domaine d'application1
-
2 Références normatives1
-
3 Termes et définitions1
-
4 Principe1
-
5 Réactifs1
-
6 Appareillage2
-
7 Échantillonnage2
-
8 Préparation de l'échantillon pour essai2
-
9 Mode opératoire3
-
9.1 Prise d'essai3
-
9.2 Détermination3
-
9.3 Essai à blanc3
-
10 Expression des résultats3
-
11 Fidélité4
-
11.1 Résultats de l'essai interlaboratoires4
-
11.2 Répétabilité4
-
11.3 Reproductibilité4
-
12 Rapport d'essai4
- Annexe A (informative) Résultats d'un essai interlaboratoires5
- Annexe B (informative) Calcul de l'indice de saponification à partir des données sur la composition des acides gras6
- Bibliographie10
COBAZ is the simple and effective solution to meet the normative needs related to your activity, in France and abroad.
Available by subscription, CObaz is THE modular solution to compose according to your needs today and tomorrow. Quickly discover CObaz!
Request your free, no-obligation live demo
I discover COBAZ