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<p>ISO 12966-2:2017 specifies methods of preparing the methyl esters of fatty acids.</p>
<p>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:</p>
<p>a) a "rapid" transmethylation procedure under alkaline conditions;</p>
<p>b) a "general" transmethylation/methylation procedure under sequential alkaline and acid conditions;</p>
<p>c) a BF<sub>3</sub> transmethylation procedure;</p>
<p>d) an alternative procedure using acid-catalysed transmethylation of glycerides.</p>
<p>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). </p>
<p>Milk and milk products (or fat coming from milk and milk products) are excluded from the scope of this document.</p>
Reģistrācijas numurs (WIID)
72142
Darbības sfēra
<p>ISO 12966-2:2017 specifies methods of preparing the methyl esters of fatty acids.</p>
<p>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:</p>
<p>a) a "rapid" transmethylation procedure under alkaline conditions;</p>
<p>b) a "general" transmethylation/methylation procedure under sequential alkaline and acid conditions;</p>
<p>c) a BF<sub>3</sub> transmethylation procedure;</p>
<p>d) an alternative procedure using acid-catalysed transmethylation of glycerides.</p>
<p>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). </p>
<p>Milk and milk products (or fat coming from milk and milk products) are excluded from the scope of this document.</p>
