ASTM D7553-09
(Test Method)Standard Test Method for Solubility of Asphalt Materials in N-Propyl Bromide
Standard Test Method for Solubility of Asphalt Materials in N-Propyl Bromide
SIGNIFICANCE AND USE
This test method is a measure of the solubility of asphalt in n-propyl bromide. The portion that is soluble in n-propyl bromide represents the active cementing constituents.
Note 2—The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D 3666 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Specification D 3666 alone does not completely assure reliable results. Reliable results depend on many factors; following the suggestions of Specification D 3666 or some similar acceptable guideline provides a means of evaluating and controlling some of these factors.
SCOPE
1.1 This test method covers the determination of the degree of solubility in n-propyl bromide of asphalt materials. It is intended to be a replacement for method D 2042 specifying a solvent that, like trichloroethylene, is safe in that it has no flash point, and has similar solubilizing characteristics to trichloroethylene, but it is not considered to be an ozone depleter banned by the Kyoto Protocol. Since a complete precision statement for this test method has not yet been developed, this test method should not be used for buying and selling purposes until the complete precision statement is available.
Note 1—This method is not applicable to tars and their distillation residues or highly cracked petroleum products. For methods covering tars, pitches, and other highly cracked petroleum products, and the use of other solvents, see Test Methods D 4, D 2318, and D 2764.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
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 and health practices and determine the applicability of regulatory limitations prior to use. Specific precaution statements are given in Section 7.
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Standards Content (Sample)
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Designation:D7553–09
Standard Test Method for
Solubility of Asphalt Materials in N-Propyl Bromide
This standard is issued under the fixed designation D7553; 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 D2042 Test Method for Solubility of Asphalt Materials in
Trichloroethylene
1.1 This test method covers the determination of the degree
D2318 Test Method for Quinoline-Insoluble (QI) Content
of solubility in n-propyl bromide of asphalt materials. It is
of Tar and Pitch
intended to be a replacement for method D2042 specifying a
D2764 Test Method for Dimethylformamide-Insoluble
solvent that, like trichloroethylene, is safe in that it has no flash
(DMF-I) Content of Tar and Pitch
point, and has similar solubilizing characteristics to trichloro-
D3666 Specification for Minimum Requirements forAgen-
ethylene, but it is not considered to be an ozone depleter
cies Testing and Inspecting Road and Paving Materials
banned by the Kyoto Protocol. Since a complete precision
D6368 Specification for Vapor-Degreasing Solvents Based
statement for this test method has not yet been developed, this
on normal-Propyl Bromide and Technical Grade normal-
test method should not be used for buying and selling purposes
Propyl Bromide
until the complete precision statement is available.
E177 Practice for Use of the Terms Precision and Bias in
NOTE 1—This method is not applicable to tars and their distillation
ASTM Test Methods
residuesorhighlycrackedpetroleumproducts.Formethodscoveringtars,
E691 Practice for Conducting an Interlaboratory Study to
pitches, and other highly cracked petroleum products, and the use of other
Determine the Precision of a Test Method
solvents, see Test Methods D4, D2318, and D2764.
1.2 The values stated in SI units are to be regarded as
3. Summary of Test Method
standard. No other units of measurement are included in this
3.1 Thesampleisdissolvedinn-propylbromideandfiltered
standard.
through a glass fiber pad. The insoluble material is washed,
1.3 The text of this standard references notes and footnotes
dried, and weighed.
which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered
4. Significance and Use
as requirements of the standard.
4.1 Thistestmethodisameasureofthesolubilityofasphalt
1.4 This standard does not purport to address all of the
in n-propyl bromide. The portion that is soluble in n-propyl
safety concerns, if any, associated with its use. It is the
bromide represents the active cementing constituents.
responsibility of the user of this standard to establish appro-
NOTE 2—The quality of the results produced by this standard are
priate safety and health practices and determine the applica-
dependent on the competence of the personnel performing the procedure
bility of regulatory limitations prior to use. Specific precaution
and the capability, calibration, and maintenance of the equipment used.
statements are given in Section 7.
Agencies that meet the criteria of Specification D3666 are generally
considered capable of competent and objective testing/sampling/
2. Referenced Documents
inspection/etc. Users of this standard are cautioned that compliance with
2.1 ASTM Standards: Specification D3666 alone does not completely assure reliable results.
Reliable results depend on many factors; following the suggestions of
D4 Test Method for Bitumen Content
Specification D3666 or some similar acceptable guideline provides a
means of evaluating and controlling some of these factors.
This test method is under the jurisdiction of ASTM Committee D04 on Road 5. Apparatus and Materials
and Paving Materials and is the direct responsibility of Subcommittee D04.47 on
5.1 The assembly of the filtering apparatus is illustrated in
Miscellaneous Asphalt Tests.
Fig. 1. Details of the component parts are as follows:
Current edition approved June 1, 2009. Published June 2009. DOI: 10.1520/
D7553-09.
5.1.1 Bitumen Crucible or Gooch Crucible, glazed inside
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and outside with the exception of outside bottom surface. The
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approximate dimensions shall be a diameter of 44 mm at the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. top tapering to 36 mm at the bottom and a depth of 20-30 mm.
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D7553–09
solution shall be placed in a water bath maintained at 38.0 6
0.3°C for 1 h before filtering.
10. Procedure
10.1 Note safety precautions in Section 7. Transfer approxi-
mately2gofthe sample into a tared 125-mLErlenmeyer flask
or other suitable container. Smaller sample sizes may be
necessary if more than 0.5 % insoluble material is expected.
Allow the sample to cool to ambient temperature and then
determine the mass to the nearest 1 mg. Designate this mass as
B. Add 100 mL of the n-propyl bromide to the container in
small portions with continuous agitation until all lumps disap-
pear and no undissolved sample adheres to the container.
Stopper the flask or otherwise cover the container and set aside
for at least 15 min (see Section 9).
10.2 Place the previously prepared and weighed crucible in
the filtering tube. Wet the filter pad with a small portion of
n-propyl bromide and decant the solution through the filter pad
of the crucible with or without light suction as may be
necessary. When the insoluble matter is appreciable, retain as
FIG. 1 Filtering Apparatus Assembly
much of it as possible in the container until the solution has
drained through the mat. Wash the container with a small
amount of solvent and, using a stream of solvent from a wash
5.1.2 Glass Microfiber Filter Pad, 32–34 mm diameter, fine
bottle, transfer all insoluble matter to the crucible. Use a
porosity, fast flow rate, 1.5 µm particle retention.
“policeman” if necessary to remove any insoluble matter
5.1.3 Filter Flask, heavy-wall, with side tube, 250- or
adhering to the container. Rinse the policeman and container
500-mL capacity.
thoroughly. Wash the insoluble matter in the crucible with
5.1.4 Filter Tube, 40 to 42 mm inside diameter.
solvent until the filtrate is substantially colorless, and then
5.1.5 Rubber Tubing or Adapter, for holding the crucible on
apply strong suction to remove the remaining solvent. Remove
the filter tube.
the crucible from the tube, wash the bottom free of any
NOTE 3—Other suitable assemblies permitting vacuum filtration with a
dissolvedmatter,andplacet
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