ASTM D2001-07(2017)

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.
Designation: D2001 − 07 (Reapproved 2017)
Standard Test Method for
Depentanization of Gasoline and Naphthas
This standard is issued under the fixed designation D2001; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method covers the removal of pentanes and 4.1 The presence of pentane and lighter hydrocarbons in
lighter hydrocarbons from gasolines, naphthas, and similar gasolines, naphthas, and similar petroleum distillates interferes
petroleum distillates to prepare samples suitable for the deter- in Test Method D2789. Pentane and lighter hydrocarbons are
minationofhydrocarbontypesinaccordancewithTestMethod separated by this test method so that the depentanized residue
D2789. In addition, this test method determines the volume can be analyzed and so the pentane and lighter hydrocarbons
percent of bottoms remaining after depentanization. can be analyzed by other methods, if desired.
1.2 The values stated in SI units are to be regarded as 4.2 Under the conditions specified in the test method some
standard. The values given in parentheses are for information C and lighter hydrocarbons remain in the bottoms, and some
only. C and heavier hydrocarbons carry over to the overhead.
Expressed as volume percent of charge, the amounts are
1.3 This standard does not purport to address all of the
typically 2 % or less, which is considered adequate for the
safety concerns, if any, associated with its use. It is the
purpose designated under Scope. It should be recognized,
responsibility of the user of this standard to establish appro-
however, that when expressed as volume percent of overhead
priate safety, health, and environmental practices and deter-
or of bottoms the percentages can be higher, making this test
mine the applicability of regulatory limitations prior to use.
method unsuitable for any purposes not designated under
1.4 This international standard was developed in accor-
Scope.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5. Apparatus
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5.1 Depentanization Apparatus, as shown in Fig. 1, consist-
Barriers to Trade (TBT) Committee. ing of the following parts:
5.1.1 Distillation Column,
2. Referenced Documents
5.1.2 Reflux Condenser Head,
5.1.3 Light-Ends Trap,
2.1 ASTM Standards:
5.1.4 Receiver, graduated, 12.5 mL, and
D1250 Guide for Use of the Petroleum Measurement Tables
3,4
5.1.5 Thermometer, 10 °C to 79 °C (50 °F to 175 °F).
D2789 Test Method for Hydrocarbon Types in Low Olefinic
Gasoline by Mass Spectrometry
5.2 Column Packing—Two types are required:
4,5
5.2.1 Heli-Pak Column Packing, 1.27 mm by 2.54 mm
3. Summary of Test Method
by 2.54 mm (Size B, 0.050 in. by 0.100 in. by 0.100 in.).
4,5
5.2.2 Heli-Pak Column Packing, Size C, 4.4 m by 4.4 m
3.1 A 50 mL sample is distilled into an overhead (C and
lighter) fraction and a bottoms (C and heavier) fraction. The (0.090 in. by 0.175 in. by 0.175 in.), or Cannon Protruded
4,6
Metal Packing, 4.0 mm by 4.0 mm (0.16 in. by 0.16 in.).
volume of bottoms is measured and the volume percent, based
on the charge, is calculated.
The sole source of supply of the apparatus known to the committee at this time
This test method is under the jurisdiction of ASTM Committee D02 on is Thermometer No. ME510-1 available from Metro Scientific Inc., 11 Willow Park
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Center, East Farmingdale, NY 11735.
Subcommittee D02.04.0C on Liquid Chromatography. If you are aware of alternative suppliers, please provide this information to
Current edition approved Dec. 1, 2017. Published December 2017. Originally ASTM International Headquarters. Your comments will receive careful consider-
approved in 1962. Last previous edition approved in 2012 as D2001 – 07 (2012). ation at a meeting of the responsible technical committee, which you may attend.
DOI: 10.1520/D2001-07R17. The sole source of supply of the apparatus known to the committee at this time
For referenced ASTM standards, visit the ASTM website, www.astm.org, or is Reliance Glass Works Inc., Gateway Rd., PO Box 825, Bensenville, IL 60106.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM The sole source of supply of the apparatus known to the committee at this time
Standards volume information, refer to the standard’s Document Summary page on is Cannon protruded metal packing available from Scientific Development Co., Box
the ASTM website. 795, State College, PA.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D2001 − 07 (2017)
FIG. 1 Depentanization Apparatus
NOTE 1—The calibration of the thermometer at the cut temperature
5.3 Distillation Flask, round-bottom, 100 mL, with
24 should be checked by refluxing a pure compound. Such a calibration can
⁄40 standard-taper female joint.
show a need for a correction.
5.4 Distillation Flask Heating Mantle, Glas-Col, spherical,
6.4 Immerse the receiver in a Dewar flask containing a
for 100 mL flask.
mixture of solid carbon dioxide (Warning—Extremely cold.)
5.5 Variable Transformer, for regulating power to heating
in a suitable liquid. 1,1,2 Trichloro Ethene is recommended.
mantle.
(Warning—Health hazard.)
5.6 Water Cooling Bath—If a supply of
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