BS EN 14103:2020

The purpose of this document is to describe a procedure for the determination of the ester content in fatty acid methyl esters (FAME) intended for incorporation into diesel oil. It also allows determining the linolenic acid methyl ester content. It allows verifying that the ester content of FAME is greater than90%(m/m) and that the linolenic acid methyl ester content is between1%(m/m) and15%(m/m).The precision was established using FAMEs with an ester content of 95% (m/m) and 100% (m/m) only, thus covering the range of the limit value. The method is also suitable outside of this range; however, precision for lower concentrations is subject to further work.This method is suitable for FAME which contains methyl esters betweenC6 andC24. NOTE1 For the purposes of this document, the term “%( m/ m)?? is used to represent the mass fractions.This method was elaborated for FAME samples from usual raw material. For FAME sample from unidentified raw material, a solution of the test sample is prepared without any internal standard addition, in order to verify the absence of natural nonadecanoic acid methyl ester or other unknown substances co-eluting with the IS. NOTE2 The calculation method of the pattern of fatty acid methyl esters is given in AnnexC. WARNING The use of this method may involve hazardous equipment, materials and operations. This method does not purport to address to all of the safety problems associated with its use, but it is the responsibility of the user to search and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.