ASTM-D6423 › Standard Test Method for Determination of pHe of Denatured Fuel Ethanol and Ethanol Fuel Blends
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Scope
1.1 This test method covers a procedure to determine a measure of the acid strength of high ethanol content fuels. These include ethanol, denatured fuel ethanol, and fuel ethanol (Ed75-Ed85). The test method is applicable to fuels containing nominally 70 volume % ethanol, or higher, as described in Specifications D 4806 and D 5798.
1.2 Acid strength as measured in this test method is defined as pHe. A pHe value for alcohol solutions is not directly comparable to pH values of water solutions.
1.3 The value of pHe will depend somewhat on the fuel blend, the stirring rate, and the time the electrode is in the fuel.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywords
acid strength; automotive spark ignition engine fuel; corrosion potential; denatured fuel ethanol; ethanol; fuel ethanol; pHe; ICS Number Code 27.060.10 (Liquid and solid fuel burners)
To find similar documents by ASTM Volume:
05.02 (Petroleum Products and Lubricants (II): D3711 - D6122)
05.03 (Petroleum Products and Lubricants (III): D6138 - D6971)
To find similar documents by classification:
27.060.10 (Liquid and solid fuel burners)
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Document Number
ASTM-D6423-20A
Revision Level
2020A EDITION
Status
Current
Modification Type
New
Publication Date
July 17, 2020
Document Type
Test Method
Committee Number
D02.A0.02