ASTM-D6748 2007

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D6748-02a(2007) 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)

Published By	Publication Date	Number of Pages
ASTM	2007	5

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Categories: 75.160.20 - Liquid fuels, ASTM

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Description

1.1 This test method covers a procedure 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 D 396 , D 975 , D 2069 , and D 2880 . 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 1The 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 and health practices and determine the applicability of regulatory limitations prior to use.

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PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus
3	Reagents and Materials Sampling Preparation and Calibration of Apparatus Procedure Report FIG. 1
4	Precision and Bias Keywords X1. INTERPRETATION OF RESULTS AND CORRELATION WITH OTHER TEST METHODS X1.1 Interpretation of Results X1.2 Correlation with Other Test Methods FIG. X1.1
5	FIG. X1.2

Additional information

Standard Title	D6748-02a(2007) 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)
Published Code	ASTM
Publication Date	2007
Pages Count	5
ICS Codes	75.160.20 - Liquid fuels

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ASTM-D6748 2007

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