ASTM D2001-07

Standard Test Method for Depentanization of Gasoline and Naphthas

SIGNIFICANCE AND USE
The presence of pentane and lighter hydrocarbons in gasolines, naphthas, and similar petroleum distillates interferes in Test Method D 2789. Pentane and lighter hydrocarbons are separated by this test method so that the depentanized residue can be analyzed and so the pentane and lighter hydrocarbons can be analyzed by other methods, if desired.
Under the conditions specified in the test method some C5 and lighter hydrocarbons remain in the bottoms, and some C6 and heavier hydrocarbons carry over to the overhead. Expressed as volume percent of charge, the amounts are typically 2 % or less, which is considered adequate for the purpose designated under Scope. It should be recognized, however, that when expressed as volume percent of overhead or of bottoms the percentages can be higher, making this test method unsuitable for any purposes not designated under Scope.
SCOPE
1.1 This test method covers the removal of pentanes and lighter hydrocarbons from gasolines, naphthas, and similar petroleum distillates to prepare samples suitable for the determination of hydrocarbon types in accordance with Test Method D 2789. In addition, this test method determines the volume percent of bottoms remaining after depentanization.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.

General Information

• Status: Historical
• Publication Date: 31-Oct-2007
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.04.0C - Liquid Chromatography

Relations

• Replaces: ASTM D2001-92(2002) - Standard Test Method for Depentanization of Gasoline and Naphthas
• Effective Date: 01-Nov-2007
• Replaced By: ASTM D2001-07(2012) - Standard Test Method for Depentanization of Gasoline and Naphthas
• Effective Date: 01-Jun-2012
• Referred By: ASTM D2427-06(2019) - Standard Test Method for Determination of C<inf>2</inf> through C<inf>5</inf> Hydrocarbons in Gasolines by Gas Chromatography (Withdrawn 2023)
• Effective Date: 01-Nov-2007

Standards Content (Sample)

Designation: D2001 − 07
Standard Test Method for
1
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* can be analyzed and so the pentane and lighter hydrocarbons
can be analyzed by other methods, if desired.
1.1 This test method covers the removal of pentanes and
lighter hydrocarbons from gasolines, naphthas, and similar 4.2 Under the conditions specified in the test method some
petroleum distillates to prepare samples suitable for the deter-
C and lighter hydrocarbons remain in the bottoms, and some
5
minationofhydrocarbontypesinaccordancewithTestMethod C and heavier hydrocarbons carry over to the overhead.
6
D2789. In addition, this test method determines the volume
Expressed as volume percent of charge, the amounts are
percent of bottoms remaining after depentanization. typically 2 % or less, which is considered adequate for the
purpose designated under Scope. It should be recognized,
1.2 The values stated in SI units are to be regarded as
however, that when expressed as volume percent of overhead
standard. The values given in parentheses are for information
or of bottoms the percentages can be higher, making this test
only.
method unsuitable for any purposes not designated under
1.3 This standard does not purport to address all of the
Scope.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and determine the applica-
5.1 Depentanization Apparatus, as shown in Fig. 1, consist-
bility of regulatory limitations prior to use.
ing of the following parts:
2. Referenced Documents 5.1.1 Distillation Column,
2
5.1.2 Reflux Condenser Head,
2.1 ASTM Standards:
5.1.3 Light-Ends Trap,
D1250 Guide for Use of the Petroleum Measurement Tables
5.1.4 Receiver, graduated, 12.5 mL, and
D2789 Test Method for Hydrocarbon Types in Low Olefinic
3,4
5.1.5 Thermometer, 10 to 79°C (50 to 175°F).
Gasoline by Mass Spectrometry
5.2 Column Packing—Two types are required:
4,5
3. Summary of Test Method
5.2.1 Heli-Pak Column Packing, 1.27 by 2.54 by 2.54
3.1 A 50-mL sample is distilled into an overhead (C and mm (Size B, 0.050 by 0.100 by 0.100 in.).
5
4,5
lighter) fraction and a bottoms (C and heavier) fraction. The 5.2.2 Heli-Pak Column Packing, Size C, 4.4 by 4.4 m
6
volume of bottoms is measured and the volume percent, based (0.090 by 0.175 by 0.175 in.), or Cannon Protruded Metal
4,6
on the charge, is calculated. Packing, 4.0 by 4.0 mm (0.16 by 0.16 in.).
24
5.3 Distillation Flask, round-bottom, 100 mL, with ⁄40
4. Significance and Use
standard-taper female joint.
4.1 The presence of pentane and lighter hydrocarbons in
5.4 Distillation Flask Heating Mantle, Glas-Col, spherical,
gasolines, naphthas, and similar petroleum distillates interferes
for 100-mL flask.
in Test Method D2789. Pentane and lighter hydrocarbons are
separated by this test method so that the depentanized residue
3
The sole source of supply of the apparatus known to the committee at this time
1
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 and Lubricants and is the direct responsibility of Subcommittee Center, East Farmingdale, NY 11735.
4
D02.04.0C on Liquid Chromatography. If you are aware of alternative suppliers, please provide this information to
Current edition approved Nov. 1, 2007. Published December 2007. Originally ASTM International Headquarters. Your comments will receive careful consider-
1
approved in 1962. Last previous edition approved in D2001–92(2002). DOI: ation at a meeting of the responsible technical committee, which you may attend.
5
10.1520/D2001-07. The sole source of supply of the apparatus known to the committee at this time
2
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.
6
contact ASTM Customer Service at [e-mail]. 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.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2001 − 07
FIG. 1 Depentanization Apparatus
5.5 Variable Transformer, for regulating power
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:D2001–92(Reapproved 2002) Designation: D 2001 – 07
Standard Test Method for
1
Depentanization of Gasoline and Naphthas
This standard is issued under the fixed designation D 2001; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method covers the removal of pentanes and lighter hydrocarbons from gasolines, naphthas, and similar petroleum
distillates to prepare samples suitable for the determination of hydrocarbon types in accordance with Test Method D1319 or Test
Method D 2789. In addition, this test method determines the volume percent of bottoms remaining after depentanization.
1.2 ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformation
purposes only.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1250Guide for Petroleum Measurement Tables
2
D1319Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent IndicatorAdsorption Guide for Use
of the Petroleum Measurement Tables
D 2789 Test Method for Hydrocarbon Types in Low- Olefinic Gasoline by Mass Spectrometry
3. Summary of Test Method
3.1 A50-mLsample is distilled into an overhead (C and lighter) fraction and a bottoms (C and heavier) fraction.The volume
5 6
of bottoms is measured and the volume percent, based on the charge, is calculated.
4. Significance and Use
4.1 The presence of pentane and lighter hydrocarbons in gasolines, naphthas, and similar petroleum distillates interferes in Test
Method D1319 and Test Method D 2789. Pentane and lighter hydrocarbons are separated by this test method so that the
depentanized residue can be analyzed and so the pentane and lighter hydrocarbons can be analyzed by other methods, if desired.
4.2 Under the conditions specified in the test method some C and lighter hydrocarbons remain in the bottoms, and some C
5 6
and heavier hydrocarbons carry over to the overhead. Expressed as volume percent of charge, the amounts are typically 2 % or
less, which is considered adequate for the purpose designated under Scope. It should be recognized, however, that when expressed
as volume percent of overhead or of bottoms the percentages can be higher, making this test method unsuitable for any purposes
not designated under Scope.
5. Apparatus
5.1 Depentanization Apparatus, as shown in Fig. 1, consisting of the following parts:
5.1.1 Distillation Column,
5.1.2 Reflux Condenser Head,
5.1.3 Light-Ends Trap,
5.1.4 Receiver, graduated, 12.5 mL, and
,
3 4
5.1.5 Thermometer, 10 to 79°C (50 to 175°F).
5.2 Column Packing— Two types are required:
1
This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.04.0C
on Hydrocarbon Analysis.Liquid Chromatography.
CurrenteditionapprovedMarch15,1992.Nov.1,2007.PublishedMay1992.December2007.OriginallypublishedasD2001–62T.approvedin1962.Lastpreviousedition
D2001–91.approved in D 2001–92(2002).
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
, Vol 05.01.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Thermometer No. ME510-1 available from Metro Scientific Inc., 11 Willow Park Center, East Farmingdale, NY 11735.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D2001–07
FIG. 1 Depentanization Apparatus
4,5
5.2.1 Heli-Pak Column Packing,, 1.27 by 2.54 by 2.54 mm (Size B, 0.050 by 0.100 by 0.100 in.).
,
4 4 5
5.2.2 Heli-Pak Column Packing, , Size C, 4.4 by 4.4 m (0.090 by 0.175 by 0.175 in.), or Cannon Protruded Metal Packing,
4,6
, 4.0 by 4.0 mm (0.16 by 0.16 in.).
24
5.3 Distillation Flask, round-bottom, 100 mL, with ⁄40 standard-taper female joint.
5.4 Distillation Flask Heating Mantle,
...