ASTM D2414-01

Standard Test Method for Carbon Black—Oil Absorption Number

SCOPE
1.1 This test method covers the determination of the oil absorption number of carbon black.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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

• Status: Historical
• Publication Date: 09-Dec-2001
• ICS: 71.060.10 - Chemical elements
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.11 - Carbon Black Structure

Relations

• Replaced By: ASTM D2414-02 - Standard Test Method for Carbon Black—Oil Absorption Number
• Effective Date: 10-Jul-2002

Standards Content (Sample)

Designation: D 2414 – 01
Standard Test Method for
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Carbon Black—Oil Absorption Number
This standard is issued under the fixed designation D 2414; 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 3.2 Either DBP or paraffin oil is acceptable for use. While
studies have shown either oil to exhibit comparable precision,
1.1 This test method covers the determination of the oil
paraffin oil offers the advantage of being non-hazardous; even
absorption number of carbon black.
FDA approved grades are available. For either oil, Sections
1.2 The values stated in SI units are to be regarded as the
8-11 (Calibration, Procedure, Calculation, and Report) are to
standard. The values given in parentheses are for information
be consistent with the oil selected for use. Referee testing
only.
between suppliers and users should use DBP oil until such time
1.3 This standard does not purport to address all of the
that precision data is available for paraffin oil.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Significance and Use
priate safety and health practices and determine the applica-
4.1 The oil absorption number of a carbon black is related to
bility of regulatory limitations prior to use.
the processing and vulcanizate properties of rubber compounds
2. Referenced Documents containing the carbon black.
2.1 ASTM Standards:
4
5. Apparatus
D 1799 Practice for Carbon Black—Sampling Packaged
2 5.1 Balance, analytical, with an 0.01-g sensitivity.
Shipments
5.2 Oven gravity–convection type, capable of maintaining
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
2 125° 6 5°C.
ments
5.3 Spatula, rubber, 100-mm.
D 4483 Practice for Determining Precision for Test Method
5
2
5.4 Absorptometer, equipped with a constant-rate buret
Standards in the Rubber and Carbon Black Industries
3
that delivers 4 6 0.024 cm /min.
D 4821 Guide for Carbon Black—Validation of Test
2
5.5 Desiccator.
Method Precision and Bias
E 691 Practice for Conducting an Interlaboratory Study to
6. Reagent and Standards
3
Determine the Precision of a Test Method
6.1 Purity of Reagents—Reagent grade chemicals shall be
used in all tests. Unless otherwise indicated, it is intended that
3. Summary of Test Method
all reagents shall conform to the specifications of the Commit-
3.1 In this test method, oil is added by means of a
tee on Analytical Reagents of the American Chemical Society,
constant-rate buret to a sample of carbon black in the mixer
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where such specifications are available. Other grades may be
chamber of an absorptometer. As the sample absorbs the oil,
used, provided it is first ascertained that the reagent is of
the mixture changes from a free-flowing state to one of a
sufficiently high purity to permit its use without lessening the
semiplastic agglomeration, with an accompanying increase in
accuracy of the determination.
viscosity. This increased viscosity is transmitted to the torque-
6.2 n-Dibutyl Phthalate, having a density of 1.042 to 1.047
sensing system of the absorptometer. When the viscosity of the
3
Mg/m at 25°C and a relative density of 1.045 to 1.050 at 25°C.
mixture reaches a predetermined torque level, the absorptom-
6.3 Paraffin oil, having a kinematic viscosity of 10 to 34
eter and buret will shut off simultaneously. The volume of oil
added is read from the direct-reading buret. The volume of oil
4
per unit mass of carbon black is the oil absorption number.
All apparatus is to be operated and maintained in accordance with the
manufacturer’s directions for optimum performance.
5
Available from C. W. Brabender Instruments, Inc., 50 E. Wesley St., South
Hackensack, NJ 07606 and from HITEC Luxembourg, 5 Rue de l’Eglise, L-1458
1
This test method is under the jurisdiction of ASTM Committee D24 on Carbon
Luxembourg.
6
Black and is the direct responsibility of Subcommittee D24.11 on Absorptive
Reagent Chemicals, American Chemical Society Specifications, American
Properties of Carbon Black.
Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Current edition approved Dec. 10, 2001. Published February 2002. Originally
listed by the American Chemical Society, see Analar Standards for Laboratory
published as D 2414-65T. Last previous edition D 2414-00a.
Chemicals, BDH Ltd., Poole, Dorset, U.K. and the United States Pharmacopeia and
2
Annual Book of ASTM Standards, Vol 09.01.
National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville, MD.
3
Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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