ASTM D2320-98(2012)
(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
5.1 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 standard. No other units of measurement are included in this 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.
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D2320 − 98 (Reapproved 2012)
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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Significance and Use
5.1 Values of density and relative density are used for
1.1 Thistestmethodcoversthedeterminationofdensityand
relative density by pycnometer, and can be used for pitch that convertingvolumestounitsofmassasrequiredinotherASTM
standards and in sales transactions.
can be handled in fragments.
1.2 The values stated in SI units are to be regarded as
6. Apparatus
standard. No other units of measurement are included in this
6.1 Glass Pycnometer, capacity about 25 mL, with accu-
standard.
rately fitting glass stopper with a capillary tube 1.0 to 2.0 mm
1.3 This standard does not purport to address all of the
in diameter.
safety concerns, if any, associated with its use. It is the
6.2 Water Bath, maintained at 25.0 6 0.1°C and provided
responsibility of the user of this standard to establish appro-
with mechanical stirring.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
6.3 Vacuum Pump or Aspirator, capable of producing a
vacuum of 2.7 kPa (20 torr).
2. Referenced Documents
NOTE 1—20 torr=20 mm Hg=2.66 kPa.
2.1 ASTM Standards:
6.4 Manometer, suitable for measuring the specified
D4296Practice for Sampling Pitch
vacuum.
E11Specification forWovenWireTest Sieve Cloth andTest
6.5 Vacuum Desiccator with Guard .
Sieves
6.6 Sieves,U.S.Standard2.36-mm(No.8)and600-µm(No.
3. Terminology
30) conforming to Specification E11.
3.1 Definitions:
7. Reagents and Materials
3.1.1 density—themassperunitofvolumeatastandardtest
temperature.
7.1 Wetting Agent, 0.1 g/mLAerosol OT.
3.1.2 relative density—the ratio of the mass of a given
7.2 Wetting Agent, 0.1 g/mL BRU 35 (Alyoxyethylene
volume of the material at a standard test temperature to that of
dodecyl ether, detergent.
an equal volume of water at the same temperature.
8. Bulk Sampling
4. Summary of Test Method
8.1 Samples from shipments shall be taken in accordance
4.1 The sample is weighed and its volume determined by with Practice D4296 and shall be free of foreign substances.
the mass of water displaced. Thoroughly mix the sample immediately before removing a
representativeportionforthedeterminationorfordehydration.
9. Dehydration
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
9.1 Allbulksamplessuspectedofhavingfreemoistureshall
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
be air-dried or oven-dried at 50°C in a forced-air oven before
Current edition approved Nov. 1, 2012. Published November 2012. Originally
analyzing.
approved in 1964. Last previous edition approved in 2008 as D2320–98(2012).
DOI: 10.1520/D2320-98R12.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 10. Preparation of Test Sample
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
10.1 Crush a 50 to 100-g representative portion of the dry
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. pitch until all of it passes through the 2.36-mm (No. 8) sieve.
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D2320 − 98 (2012)
Avoid grinding the pitch. Remove the fines by screening spgr 5 W 2 W / W 2 W 2 W 2 W (1)
~ ! @~ ! ~ !#
3 1 2 1 4 3
through the 600-µm (No. 30) sieve and use the pitch retained
5W/@W 2 ~W 2 W !#
4 2
onthissieveasthetestsample.Ifdesired,smalllumpsofpitch
may be used without crushing, provided the lumps pass the
where:
2.36-mm sieve and are retained on the 600-µm sieve. In either
W = mass of sample (W − W ),
3 1
case, follow the evacuation steps described in 12.2. In case of
W = mass of pycnometer,
dispute use the crushing method.
W = mass of pycnometer filled with water at 25°C,
W = mass of pycnometer with sample, and
11. Calibration of Pycnometer
W = mass of pycnometer with sample filled with water at
11.1 Weigh the thoroughly clean, dry, and assembled pyc-
25°C.
nometer to the nearest 0.5 mg and record the mass.
13.2 Calculate the density of the pitch as follows:
11.2 Fill the pycnometer with freshly boiled distilled water
Density 5relativedensity 3W (2
...
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