ASTM D4892-89(1999)e1

Standard Test Method for Density of Solid Pitch (Helium Pycnometer Method)

SCOPE
1.1 This test method covers the determination of pitch density by helium pycnometer. It is applicable at a range of room temperatures of 15 to 35°C.
1.2 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: 09-Dec-1999
• ICS: 75.140 - Waxes, bituminous materials and other petroleum products
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.05 - Properties of Fuels, Petroleum Coke and Carbon Material

Relations

• Replaced By: ASTM D4892-89(2004) - Standard Test Method for Density of Solid Pitch (Helium Pycnometer Method)
• Effective Date: 01-Nov-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
e1
Designation:D4892–89(Reapproved 1999)
Standard Test Method for
Density of Solid Pitch (Helium Pycnometer Method)
This standard is issued under the fixed designation D 4892; 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.
This standard has been approved for use by agencies of the Department of Defense.
e NOTE—Editorial corrections were made in Section 12 in December 1999.
1. Scope 5. Significance and Use
1.1 This test method covers the determination of pitch 5.1 This test method is useful in characterizing pitches as
density by helium pycnometer. It is applicable at a range of one element in establishing uniformity of shipments and
room temperatures of 15 to 35°C. sources of supply. With this method, the density is determined
1.2 This standard does not purport to address all of the totwodecimalplaces,whichissufficientformostapplications.
safety concerns, if any, associated with its use. It is the If a more precise measurement is required (three decimal
responsibility of the user of this standard to establish appro- places), use Test Methods D 2320 or D 71.
priate safety and health practices and determine the applica-
6. Apparatus
bility of regulatory limitations prior to use.
6.1 Helium Pycnometer.
2. Referenced Documents
6.2 Balance, capable of weighing a 150-g specimen to
2.1 ASTM Standards: within 1 mg.
D 71 Test Method for Relative Density of Solid Pitch and 6.3 Sieves, U.S. Standard 2.36-mm (No. 8), 600-µm (No.
Asphalt (Displacement Method) 30), conforming to Specification E 11.
D 2320 Test Method for Density (Specific Gravity) of Solid 6.4 Thermometer, for measuring room temperature.
Pitch (Pycnometer Method)
7. Bulk Sampling
D 2962 Method for Calculating Volume-Temperature Cor-
7.1 Samples from shipments shall be taken in accordance
rection for Coal-Tar Pitches
with Practice D 4296 and shall be free of foreign substances.
D 4296 Practice for Sampling Pitch
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
4 8. Dehydration
poses
8.1 All bulk samples suspected of having free moisture
3. Terminology
should be air-dried or oven-dried at 50°C in a convection or
forced-air oven before analyzing.
3.1 Definition of Term Specific to this Standard:
3.1.1 density, as determined by this test method— the mass
9. Preparation of Test Specimen
per unit volume and shall be reported as follows:
9.1 Crush a 50 to 200-g representative portion of the dry
density, 25°C, g/cm ~grams per cubic centimeter! (1)
pitch until all of it passes the 2.36 mm (No. 8 sieve). Avoid
grinding the pitch. Remove the fines by screening through the
4. Summary of Test Method
600 µm (No. 30 sieve) and use the pitch retained on this sieve
4.1 The sample is pulverized and screened to a given
as the test specimen.
fraction, then the volume of a weighed portion of the fraction
is determined using a helium pycnometer.
10. Calibration of Helium Pycnometer
10.1 Calibrate daily or before using, following instrument
1 manufacturer’s instructions.
This test method is under the jurisdiction of ASTM Committee D-2 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.05.OF on Industrial Pitches.
Current edition approved Jan. 27, 1989. Published May 1989. Helium pycnometers available from the following suppliers have been found
Annual Book of ASTM Standards, Vol 05.01. satisfactory for this purpose: (a) Beckman 2500 Harbor Blvd., Fullerton, CA, (b)
Annual Book of ASTM Standards, Vol 05.02. Micromeritics, 5680 Goshen Springs Rd., Norcross, GA, and (c) Quantachrome, 5
Annual Book of ASTM Standards, Vol 14.02. Aerial Way, Syosset, NY.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D4892
TABLE 1 Volume Correction Factors Versus Measurement
11. Procedure
Temperature
11.1 Place10to150g(80to90 %ofthemaximumcapacity
Measurement Temperature,° C Correction Factor
oftheparticularholderbeingused)ofthepreparedcrushedand
15 1.005
sized fraction into the required specimen holder provided with
16 1.004
the instrument. Weigh to the nearest milligram.
17 1.004
18 1.003
...