ASTM-D6748 2022(Redline)

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D6748-22 Standard Test Method for Determination of Potential Instability of Middle Distillate Fuels Caused by the Presence of Phenalenes and Phenalenones (Rapid Method by Portable Spectrophotometer) (Redline)

Published By	Publication Date	Number of Pages
ASTM	2022

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Categories: 75.160.20 - Liquid fuels, ASTM

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Description

ASTM D6748-22

Redline Standard: Standard Test Method for Determination of Potential Instability of Middle Distillate Fuels Caused by the Presence of Phenalenes and Phenalenones (Rapid Method by Portable Spectrophotometer)

ASTM D6748

Scope

1.1 This test method covers a procedure3 for the rapid determination of phenalenes and phenalenones in middle distillate fuels, including marine, automotive, heating, and gas turbine fuel such as those specified in Specifications D396, D975, D2069, and D2880. Phenalenes and phenalenones affect the potential instability of fuels, leading to fuel degradation products during storage, which may cause performance problems.

1.2 This test method is applicable to both dyed and undyed fuels at all points in the distribution chain from refinery to end-user. It is not applicable to fuels containing residual oil. The portable apparatus allows the whole test to be conducted on site or in a laboratory and does not require the test sample to be heated.

1.3 This test method is suitable for testing samples with a relative absorbance of up to 5.00 absorbance units (AU).

Note 1: The precision of the test method has been established on relative absorbance up to 1.00 AU. For relative absorbance above 1.00 AU the precision may not apply.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

absorbance units; burner fuel; diesel fuel; infrared; infrared spectrophotometer; marine fuel; middle distillate fuel; potential instability; spectrometer; spectrophotometer; storage stability; turbine fuel; visible spectrophotometer;

ICS Code

ICS Number Code 75.160.20 (Liquid fuels)

DOI: 10.1520/D6748-22

Additional information

Standard Title	D6748-22 Standard Test Method for Determination of Potential Instability of Middle Distillate Fuels Caused by the Presence of Phenalenes and Phenalenones (Rapid Method by Portable Spectrophotometer) (Redline)
Published Code	ASTM
Publication Date	2022
ICS Codes	75.160.20 - Liquid fuels