The reasons for withdrawing the test method are as follows: (1) The test method was developed with older technology which is not readily available today. As a result, there is no easy mechanism to update the test method without method development and a new ILS. (2) The test method has a precision statement based on an old ASTM practice but not the currently accepted D6300. (3) There is no referenced research report. ASTM archives do not have a research report on file. The ASTM Form and Style Manual requires a research report. (4) The committee understands that this method is rarely used. There are several test methods (for example, D6730, D6729) that provide compositional data for gasolines as possible alternatives. (5) ASTM will continue to provide copies of the test method for those that may need it in the original format.
Formerly under the jurisdiction of Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants, this test method was withdrawn in October 2023 and replaced by Test Method D6730 on the Determination of Individual Components in Spark Ignition Engine Fuels by 100-Metre Capillary (with Precolumn) High-Resolution Gas Chromatography and Test Method D6729 on Determination of Individual Components in Spark Ignition Engine Fuels by 100 Metre Capillary High Resolution Gas Chromatography1
Значение и использование4.1 In hydrocarbon type analyses of gasolines, highly volatile fuels can need to be stabilized by depentanization (Test Method D2001) prior to analysis. A knowledge of the composition of light hydrocarbons in the overhead from the depentanization process is useful in converting analyses of the depentanized fraction to a total sample basis.
1.1 This test method covers the determination of the two (C2) through five (C5-) carbon paraffins and mono-olefins in gasolines. The concentrations by volume or mass (weight) of the following components are generally reported:
1.1.1 Ethylene plus ethane
1.1.2 Propane
1.1.3 Propylene
1.1.4 Isobutane
1.1.5 n-Butane
1.1.6 Butene-1 plus isobutylene
1.1.7 trans-Butene-2
1.1.8 cis-Butene-2
1.1.9 Isopentane
1.1.10 3-Methylbutene-1
1.1.11 n-Pentane
1.1.12 Pentene-1
1.1.13 2-Methylbutene-1
1.1.14 trans-Pentene-2
1.1.15 cis-Pentene-2
1.1.16 2-Methylbutene-2
1.2 This test method does not cover the determination of cyclic olefins, diolefins, or acetylenes. These are usually minor components in finished gasolines.
1.3 Samples to be analyzed should not contain significant amounts of material boiling lower than ethylene.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4.1 Exception—Alternative units, in common usage, are also provided to improve the clarity and aid the user of this test method.
1.5 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.
1.6 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.