DIN EN ISO 12966-2:2011 PDF

Scope: This part of ISO 12966 specifies methods of preparing the methyl esters of fatty acids. It includes methods for preparing fatty acid methyl esters from animal and vegetable fats and oils, fatty acids and soaps. To cover different requirements four methylation methods are specified, namely: a) a “rapid” transmethylation procedure under alkaline conditions; b) a “general” transmethylation/methylation procedure under sequential alkaline and acid conditions; c) a BF3 transmethylation procedure; d) an alternative procedure using acid-catalysed transmethylation of glycerides. Methyl esters so produced are used in various analytical procedures requiring such derivatives, e.g. gas-liquid chromatography (GLC), thin-layer chromatography (TLC), and infrared spectrometry (IR).

DIN EN ISO 12966-2:2011 history

2017 DIN EN ISO 12966-2:2017-08 Animal and vegetable fats and oils - Gas chromatography of fatty acid methyl esters - Part 2: Preparation of methyl esters of fatty acids (ISO 12966-2:2017); German version EN ISO 12966-2:2017
2017 DIN EN ISO 12966-2:2017 Animal and vegetable fats and oils - Gas chromatography of fatty acid methyl esters - Part 2: Preparation of methyl esters of fatty acids (ISO 12966-2:2017)
1970 DIN EN ISO 12966-2 E:2016-12 Gas Chromatographic Analysis of Fatty Acid Methyl Esters of Animal and Vegetable Fats and Oils Part 2: Preparation of Fatty Acid Methyl Esters (Draft)
2016 DIN EN ISO 12966-2 E:2016 Draft Document - Animal and vegetable fats and oils - Gas chromatography of fatty acid methyl esters - Part 2: Preparation of methyl esters of fatty acids (ISO/FDIS 12966-2:2016); German and English version FprEN ISO 12966-2:2016
2011 DIN EN ISO 12966-2:2011 Animal and vegetable fats and oils - Gas chromatography of fatty acid methyl esters - Part 2: Preparation of methyl esters of fatty acids (ISO 12966-2:2011); German version EN ISO 12966-2:2011