ASTM D2007-98

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: D 2007 – 98 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
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Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Characteristic Groups in Rubber Extender and Processing
Oils and Other Petroleum–Derived Oils by the Clay–Gel
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Absorption Chromatographic Method
This standard is issued under the fixed designation D 2007; 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 E 691 Practice for Conducting an Interlaboratory Study to
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Determine the Precision of a Test Method
1.1 This test method covers a procedure for classifying oil
samples of initial boiling point of at least 260°C (500°F) into
3. Terminology
the hydrocarbon types of polar compounds, aromatics and
3.1 Definitions of Terms Specific to This Standard:
saturates, and recovery of representative fractions of these
3.1.1 The following terms refer to the hydrocarbon types
types. This classification is used for specification purposes in
and structural groups as measured by this test method:
rubber extender and processing oils.
3.1.1.1 asphaltenes, or n-pentane insolubles—insoluble
NOTE 1—See Test Method D 2226.
matter that precipitates from a solution of oil in n-pentane
1.2 This test method is not directly applicable to oils of under the specified conditions.
3.1.1.2 polar compounds—material retained on adsorbent
greater than 0.1 mass % pentane insolubles. Such oils can be
analyzed after removal of these materials, but precision is clay after percolation of the sample in n-pentane eluent under
the conditions specified.
degraded (See Appendix X1).
1.3 The values stated in SI units are to be regarded as the 3.1.1.3 polar aromatics—synonym for polar compounds.
3.1.1.4 aromatics—material that, on percolation, passes
standard. The values given in parentheses are for information
only. through a column of adsorbent clay in a n-pentane eluent but
adsorbs on silica gel under the conditions specified.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.1.1.5 saturates—material that, on percolation in a
n-pentane eluent, is not adsorbed on either the clay or silica gel
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- under the conditions specified.
bility of regulatory limitations prior to use. Specific precaution
4. Summary of Test Method
statements are given in Notes 2-5, Note A1.1, and Note A1.2.
4.1 The sample is diluted with solvent and charged to a
2. Referenced Documents
glass percolation column containing clay in the upper section
2.1 ASTM Standards: and silica gel plus clay in the lower section. n-Pentane is then
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charged to the double column until a definite quantity of
D 86 Test Method for Distillation of Petroleum Products
D 323 Test Method for Vapor Pressure of Petroleum Prod- effluent has been collected. The upper (clay) section is removed
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ucts (Reid Method) from the lower section and washed further with n-pentane. A
toluene-acetone mixture 50 to 50 by volume is then charged to
D 1159 Test Method for Bromine Number of Petroleum
Distillates and Commercial Aliphatic Olefins by Electro- the clay section for desorption and a specified volume of
2
effluent collected. The lower (gel) column may be desorbed by
metric Titration
D 2226 Classification for Various Types of Petroleum Oils recirculation of toluene.
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4.2 The solvents are completely removed from the recov-
for Rubber Compounding Use
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D 3055 Specification for Cyclohexane 995 ered n-pentane and the toluene-acetone fractions and the
residues are weighed and calculated as saturate and polar
compounds contents. Aromatics may be calculated by differ-
1
ence, or measured following evaporation of the toluene used
This test method is under the jurisdiction of ASTM Committee D-2 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
for desorption of the gel column.
D02.04 on Hydrocarbon Analysis.
4.3 When the sample contains more than 0.1 mass % of
Current edition approved Apr. 10, 1998. Published June 1998. Originally
n-pentane insolubles, this test method cannot be used directly.
published as D 2007 – 68T. Last previous edition D 2007 – 93.
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Annual Book of ASTM Standards, Vol 05.01. The insoluble matter must be removed from the sample prior to
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Annual Book of ASTM Standards, Vol 09.01.
4
Discontinued. Replaced by D 5309, see 1995 Annual Book of ASTM Standards,
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Vol 06.04. Annual Book of ASTM Standards,
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