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Significance and Use
5.1 This test method applies specifically to the ATJ-SPK jet fuel as specified in Specification , section A5.4.1, derived from isobutanol and follows the fuel fingerprint described in the annex of this test method. It may not apply to other types of ATJ-SPK fuels.
5.2 Table A2.2 in Specification prescribes cycloparaffin concentration be a maximum of 15 % by mass.
5.3 Due to the nature of the chemical composition of ATJ-SPK jet fuel, standard analysis of the sample by Test Method for cycloparaffin content may yield a higher concentration of cycloparaffins than are actually present in the sample.
5.4 This method alleviates the potential for overestimating the cycloparaffin concentration by measuring the concentration of identified paraffins. Any remaining unidentified compounds are classified as potential cycloparaffins.
1.1 This test method covers the determination of cycloparaffin content by gas chromatography of the saturated ATJ-SPK jet fuel as specified in Specification , section A5.4.1, derived from isobutanol and follows the fuel fingerprint described in the Annex of this test method.
1.2 The working range for the test method is for cycloparaffin content in the range of 1 % to 15 % by mass.
1.3 The test method has an interim precision and will be updated once an extended ILS is conducted.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D2425 Test Method for Hydrocarbon Types in Middle Distillates by Mass Spectrometry
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance
D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products, Liquid Fuels, and Lubricants
D7372 Guide for Analysis and Interpretation of Proficiency Test Program Results
D7566 Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons
E355 Practice for Gas Chromatography Terms and Relationships
E594 Practice for Testing Flame Ionization Detectors Used in Gas or Supercritical Fluid Chromatography
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D8302-20, Standard Test Method for Determination of Cycloparaffin Content in Saturated ATJ-SPK Jet Fuel Gas Chromatography, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top