ASTM D2414-02a

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-Nov-2002
• ICS: 71.060.10 - Chemical elements
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.11 - Carbon Black Structure

Relations

• Replaces: ASTM D2414-02 - Standard Test Method for Carbon Black—Oil Absorption Number
• Effective Date: 10-Nov-2002
• Replaced By: ASTM D2414-03 - Standard Test Method for Carbon Black—Oil Absorption Number (OAN)
• Effective Date: 10-Jul-2003
• Referred By: ASTM D7849-23 - Standard Classification for Nomenclature of Reference Materials of Committee D24
• Effective Date: 10-Nov-2002
• Referred By: ASTM D4821-20 - Standard Guide for Carbon Black—Validation of Test Method Precision and Bias
• Effective Date: 10-Nov-2002
• Referred By: ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
• Effective Date: 10-Nov-2002
• Referred By: ASTM D3493-21 - Standard Test Method for Carbon Black—Oil Absorption Number of Compressed Sample (COAN)
• Effective Date: 10-Nov-2002
• Referred By: ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 10-Nov-2002
• Referred By: ASTM D1765-23a - Standard Classification System for Carbon Blacks Used in Rubber Products
• Effective Date: 10-Nov-2002
• Referred By: ASTM D6915-23 - Standard Practice for Carbon Black—Evaluation of Standard Reference Blacks
• Effective Date: 10-Nov-2002
• Referred By: ASTM D3053-23 - Standard Terminology Relating to Carbon Black
• Effective Date: 10-Nov-2002
• Referred By: ASTM D7854-21 - Standard Test Method for Carbon Black-Void Volume at Mean Pressure
• Effective Date: 10-Nov-2002

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 2414 – 02a
Standard Test Method for
1
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 FDA approved grades are available. For either oil, Sections
8-11 (Calibration, Procedure, Calculation, and Report) are to
1.1 This test method covers the determination of the oil
be consistent with the oil selected for use. Referee testing
absorption number of carbon black.
between suppliers and users should use DBP oil until such time
1.2 The values stated in SI units are to be regarded as the
that precision data is available for paraffin oil.
standard. The values given in parentheses are for information
only.
4. Significance and Use
1.3 This standard does not purport to address all of the
4.1 The oil absorption number of a carbon black is related to
safety concerns, if any, associated with its use. It is the
the processing and vulcanizate properties of rubber compounds
responsibility of the user of this standard to establish appro-
containing the carbon black.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3
5. Apparatus
5.1 Balance, analytical, with an 0.01-g sensitivity.
2. Referenced Documents
5.2 Oven, gravity–convection type, capable of maintaining
2.1 ASTM Standards:
125° 6 5°C.
D 1799 Practice for Carbon Black—Sampling Packaged
2 5.3 Spatula, rubber, 100-mm.
Shipments
4
5.4 Absorptometer, equipped with a constant-rate buret
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
3
2 that delivers 4 6 0.024 cm /min.
ments
5.5 Desiccator.
D 4483 Practice for Determining Precision for Test Method
2
Standards in the Rubber and Carbon Black Industries
6. Reagent and Standards
D 4821 Guide for Carbon Black—Validation of Test
2 6.1 Purity of Reagents—Reagent grade chemicals shall be
Method Precision and Bias
used in all tests. Unless otherwise indicated, it is intended that
all reagents shall conform to the specifications of the Commit-
3. Summary of Test Method
tee on Analytical Reagents of the American Chemical Society,
3.1 In this test method, oil is added by means of a
5
where such specifications are available. Other grades may be
constant-rate buret to a sample of carbon black in the mixer
used, provided it is first ascertained that the reagent is of
chamber of an absorptometer. As the sample absorbs the oil,
sufficiently high purity to permit its use without lessening the
the mixture changes from a free-flowing state to one of a
accuracy of the determination.
semiplastic agglomeration, with an accompanying increase in
6.2 n-Dibutyl Phthalate, having a density of 1.042 to 1.047
viscosity. This increased viscosity is transmitted to the torque-
3
Mg/m at 25°C and a relative density of 1.045 to 1.050 at 25°C.
sensing system of the absorptometer. When the viscosity of the
6.3 Paraffin oil, having a kinematic viscosity of 10 to 34
mixture reaches a predetermined torque level, the absorptom-
2
6
mm /s (cSt) at 40° C
eter and buret will shut off simultaneously. The volume of oil
added is read from the direct-reading buret. The volume of oil
per unit mass of carbon black is the oil absorption number.
3
3.2 Either DBP or paraffin oil is acceptable for use. While
All apparatus is to be operated and maintained in accordance with the
manufacturer’s directions for optimum performance.
studies have shown either oil to exhibit comparable precision,
4
Available from C. W. Brabender Instruments, Inc., 50 E. Wesley St., South
paraffin oil offers the advantage of being non-hazardous; even
Hackensack, NJ 07606 and from HITEC Luxembourg, 5 Rue de l’Eglise, L-1458
Luxembourg.
5
Reagent Chemicals, American Chemical Society Specifications, American
1
This test method is under the jurisdiction of ASTM Committee D24 on Carbon Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Black and is the direct responsibility of Subcommittee D24.11 on Absorptive listed by the American Chemical Society, see Analar Standards for Laboratory
Properties of Carbon Black. Chemicals, BDH Ltd., Poole, Dorset, U.K. and the United States Pharmacopeia and
Current edition approved Nov. 10, 2002. Published January 2003. Originally National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville, MD.
6
approved in 1965. Last previous edition approved in 2002 as D 2414-02. Three paraffin oils have been found suitable including Marcol 82 and Marcol 9
2
Annual Book of ASTM Standards, Vol 09.01. from Exxon and Sunpar LW107 from SUNOCO.
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