IP 354: Determination of the acid number of aviation turbine fuels - Colour-indicator titration method

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  • Method adopted/last revised:
  • Method reapproved: 2022
  • Status: Current
  • First printed in STM books: May 2019

This standard specifies a colour-indicator titration method for the determination of the acid constituents in aviation turbine fuels at levels below 0,100 mg KOH/g, and provides more sensitivity at these low levels than results from the procedures described in IP 139/ASTM D 974.

Trace amounts of acid constituents remaining after treatment during the refining of aviation turbine fuels may cause corrosion of metals or impair the water separation characteristics of the fuel.

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