ASTM D2320-98(2003)
(Test Method)Standard Test Method for Density (Relative Density) of Solid Pitch (Pycnometer Method)
Standard Test Method for Density (Relative Density) of Solid Pitch (Pycnometer Method)
SIGNIFICANCE AND USE
Values of density and relative density are used for converting volumes to units of mass as required in other ASTM standards and in sales transactions.
SCOPE
1.1 This test method covers the determination of density and relative density by pycnometer, and can be used for pitch that can be handled in fragments.
1.2 The values stated in SI units are to be regarded as the standard.
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
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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An American National Standard
Designation:D2320–98 (Reapproved 2003)
Standard Test Method for
Density (Relative Density) of Solid Pitch (Pycnometer
Method)
This standard is issued under the fixed designation D2320; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 6. Apparatus
1.1 Thistestmethodcoversthedeterminationofdensityand 6.1 Glass Pycnometer, capacity about 25 mL, with accu-
relative density by pycnometer, and can be used for pitch that rately fitting glass stopper with a capillary tube 1.0 to 2.0 mm
can be handled in fragments. in diameter.
1.2 The values stated in SI units are to be regarded as the 6.2 Water Bath, maintained at 25.0 6 0.1°C and provided
standard. with mechanical stirring.
1.3 This standard does not purport to address all of the 6.3 Vacuum Pump or Aspirator, capable of producing a
safety concerns, if any, associated with its use. It is the vacuum of 2.7 kPa (20 torr).
responsibility of the user of this standard to establish appro-
NOTE 1—20 torr=20 mm Hg=2.66 kPa.
priate safety and health practices and determine the applica-
6.4 Manometer, suitable for measuring the specified
bility of regulatory limitations prior to use.
vacuum.
2. Referenced Documents
6.5 Vacuum Desiccator with Guard.
6.6 Sieves,U.S.Standard2.36-mm(No.8)and600-µm(No.
2.1 ASTM Standards:
30) conforming to SpecificationE11.
D4296 Practice for Sampling Pitch
E11 Specification for Wire Cloth and Sieves for Testing
7. Reagents and Materials
Purposes
7.1 Wetting Agent, 0.1 g/mLAerosol OT.
3. Terminology 7.2 Wetting Agent, 0.1 g/mL BRU 35 (Alyoxyethylene
dodecyl ether, detergent.
3.1 Definitions:
3.1.1 density—themassperunitofvolumeatastandardtest
8. Bulk Sampling
temperature.
8.1 Samples from shipments shall be taken in accordance
3.1.2 relative density—the ratio of the mass of a given
with Practice D4296 and shall be free of foreign substances.
volume of the material at a standard test temperature to that of
Thoroughly mix the sample immediately before removing a
an equal volume of water at the same temperature.
representativeportionforthedeterminationorfordehydration.
4. Summary of Test Method
9. Dehydration
4.1 The sample is weighed and its volume determined by
9.1 Allbulksamplessuspectedofhavingfreemoistureshall
the mass of water displaced.
be air-dried or oven-dried at 50°C in a forced-air oven before
5. Significance and Use
analyzing.
5.1 Values of density and relative density are used for
10. Preparation of Test Sample
convertingvolumestounitsofmassasrequiredinotherASTM
10.1 Crush a 50 to 100-g representative portion of the dry
standards and in sales transactions.
pitch until all of it passes through the 2.36-mm (No. 8) sieve.
Avoid grinding the pitch. Remove the fines by screening
This test method is under the jurisdiction of ASTM Committee D02 on
through the 600-µm (No. 30) sieve and use the pitch retained
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
onthissieveasthetestsample.Ifdesired,smalllumpsofpitch
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
may be used without crushing, provided the lumps pass the
Current edition approved Nov. 1, 2003. Published November 2003. Originally
approved in 1964. Last previous edition approved in 1998 as D2320–98.
2.36-mm sieve and are retained on the 600-µm sieve. In either
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
case, follow the evacuation steps described in 12.2. In case of
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
dispute use the crushing method.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D2320–98 (2003)
11. Calibration of Pycnometer
where:
W = mass of sample (W − W ),
11.1 Weigh the thoroughly clean, dry, and assembled pyc- 3 1
W = mass of pycnometer,
nometer to the nearest 0.5 mg and record the mass. 1
W = mass of pycnometer filled with water at 25°C,
11.2 Fill the pycnometer with freshly boiled distilled water
W = mass of pycnometer with sample, and
that has been cooled to about 20°C. Insert the stopper with a
W = mass of pycnometer with sample filled with water at
rotary motion to secure a firm seat, making sure that no air is
...
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