- Published: April 2025
Overview:
This document specifies a method for determining the total acidity, calculated as acetic acid, of ethanol to be used in petrol blends. It is applicable to ethanol having total acid contents of between 0,003 % (m/m) and 0,015 % (m/m).
In comparison with the previous edition, the following technical modification has been made: sparging with nitrogen before titration has been added to section 8.4 and sparging during the titration has been made mandatory for clarification to the user and for better comparison of the results. This has no effect on the method precision.
NOTE For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent the mass fraction and the volume fraction, respectively.
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