ČSN EN 16300   (656575) Motorová paliva - Stanovení jodového čísla v methylesterech mastných kyselin (FAME) - Metoda výpočtu z výsledků plynové chromatografie

Anotace textu normy ČSN EN 16300   (656575)

This document specifies a calculation procedure for the determination of iodine value (´CIV´ - ´calculated iodine value´) of fatty acid methyl esters (FAME) to be used either as automotive fuel for diesel engines as specified in EN 14214 or heating fuel or as an extender for automotive fuel for diesel engines as specified in EN 590. This procedure does not apply to Ethyl esters or esters made from fish oil and mixtures thereof.

The calculation procedure is applicable to methyl esters between C6 and C24:1. The calculation procedure uses as data entry the results from the gas chromatography determination (GC) according to EN 14103 of individual fatty acid methyl esters and is based on AOCS recommended practice Cd 1c - 85 for the determination of the iodine value of edible oil from its fatty acid composition. It is important to recognize that the latest version of EN 14103 is intended to be used for the determination of individual FAME components.

For informative purposes only, but not for cases of dispute, EN 14331 can also be used to extract the FAME contents from FAME containing diesel fuels (like B5, B7, B30, etc.) and to use the contents of the individual FAME components from this method as data entry for the calculation specified in this document.

This calculation method can be used only if the evaluated sample fulfils the requirement for ester content as reported in EN 14214.

The precision statement of this test method was determined by calculation from a Round Robin exercise with iodine values in the range of 16 g iodine/100 g to 126 g iodine/100 g.

The test method is also applicable for higher iodine values, however, the precision statement is not established for iodine values above 126 g iodine/100 g.