Standard Test Method for Carbon Black—Oil Absorption Number (OAN)

SIGNIFICANCE AND USE
4.1 The oil absorption number of a carbon black is related to the processing and vulcanizate properties of rubber compounds containing the carbon black.
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.

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Publication Date
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: D2414 − 13
StandardTest Method for
1
Carbon Black—Oil Absorption Number (OAN)
This standard is issued under the fixed designation D2414; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope D5554TestMethodforDeterminationoftheIodineValueof
Fats and Oils
1.1 This test method covers the determination of the oil
3
2.2 DIN Standards:
absorption number of carbon black.
DIN16945Testingofresins,hardenersandaccelerators,and
1.2 The values stated in SI units are to be regarded as the
catalyzed resins
standard. The values given in parentheses are for information
DIN EN ISO 660Animal and vegetable fats and oils -
only.
Determination of acid value and acidity
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Summary of Test Method
responsibility of the user of this standard to establish appro-
3.1 In this test method, oil is added by means of a
priate safety and health practices and determine the applica-
constant-rate buret to a sample of carbon black in the mixer
bility of regulatory limitations prior to use.
chamber of an absorptometer. As the sample absorbs the oil,
the mixture changes from a free-flowing state to one of a
2. Referenced Documents
semiplastic agglomeration, with an accompanying increase in
2
2.1 ASTM Standards:
viscosity. This increased viscosity is transmitted to the torque-
D445Test Method for Kinematic Viscosity of Transparent
sensingsystemoftheabsorptometer.Whentheviscosityofthe
andOpaqueLiquids(andCalculationofDynamicViscos-
mixture reaches a predetermined torque level, the absorptom-
ity)
eter and buret will shut off simultaneously. The volume of oil
D1218Test Method for Refractive Index and Refractive
added is read from the direct-reading buret. The volume of oil
Dispersion of Hydrocarbon Liquids
per unit mass of carbon black is the oil absorption number.
D1765Classification System for Carbon Blacks Used in
3.2 Either DBP, paraffin or epoxidized sunflower oils are
Rubber Products
acceptableforusewithmoststandardpelletedgradesofcarbon
D1799Practice for Carbon Black—Sampling Packaged
black including N-series carbon blacks found in Classification
Shipments
D1765. OAN testing using paraffin oils or epoxidized sun-
D1900Practice for Carbon Black—Sampling Bulk Ship-
flower oils on some standard blacks and specialty blacks
ments
including powder products may result in unacceptable differ-
D4052Test Method for Density, Relative Density, and API
ences as compared to OAN testing with DBP oil. Paraffin and
Gravity of Liquids by Digital Density Meter
epoxidized sunflower oils are considered non-hazardous; some
D4483Practice for Evaluating Precision for Test Method
paraffin oils are FDA approved. For any of the oils, Sections
StandardsintheRubberandCarbonBlackManufacturing
8-11 (Calibration, Procedure, Calculation, and Report) are to
Industries
be consistent with the oil selected for use. Referee testing
D4821Guide for Carbon Black—Validation of Test Method
betweensuppliersandusersshoulduseDBPoiluntilsuchtime
Precision and Bias
that precision data are available for alternate oils.
1 4. Significance and Use
This test method is under the jurisdiction ofASTM Committee D24 on Carbon
Black and is the direct responsibility of Subcommittee D24.11 on Carbon Black
4.1 Theoilabsorptionnumberofacarbonblackisrelatedto
Structure.
theprocessingandvulcanizatepropertiesofrubbercompounds
Current edition approved July 1, 2013. Published August 2013. Originally
approved in 1965. Last previous edition approved in 2012 as D2414–12. DOI:
containing the carbon black.
10.1520/D2414-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on AvailablefromDeutschesInstitutfurNormunge.V.(DIN),Burggrafenstrasse6,
the ASTM website. 10787 Berlin, Germany, http://www.din.de.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2414 − 13
4
5. Apparatus 8.1.1 Model—Threedifferenttypesofabsorptometersarein
use: (1) early models based on springs and mechanical indica-
5.1 Balance, analytical, with an 0.01-g sensitivity.
tion of torque (Type A and B), (2) second generation absorp-
5.2 Oven, gravity-convection type, capable of maintaining
tometers equipped with load cells and digital
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2414 − 12 D2414 − 13
Standard Test Method for
1
Carbon Black—Oil Absorption Number (OAN)
This standard is issued under the fixed designation D2414; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D1218 Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids
D1765 Classification System for Carbon Blacks Used in Rubber Products
D1799 Practice for Carbon Black—Sampling Packaged Shipments
D1900 Practice for Carbon Black—Sampling Bulk Shipments
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
D4821 Guide for Carbon Black—Validation of Test Method Precision and Bias
D5554 Test Method for Determination of the Iodine Value of Fats and Oils
3
2.2 DIN Standards:
DIN 16945 Testing of resins, hardeners and accelerators, and catalyzed resins
DIN EN ISO 660 Animal and vegetable fats and oils - Determination of acid value and acidity
3. Summary of Test Method
3.1 In this test method, oil is added by means of a constant-rate buret to a sample of carbon black in the mixer chamber of an
absorptometer. As the sample absorbs the oil, the mixture changes from a free-flowing state to one of a semiplastic agglomeration,
with an accompanying increase in viscosity. This increased viscosity is transmitted to the torque-sensing system of the
absorptometer. When the viscosity of the mixture reaches a predetermined torque level, the absorptometer 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.
3.2 Either DBP, paraffin or epoxidized sunflower oils are acceptable for use with most standard pelleted grades of carbon black
including N-series carbon blacks found in Classification D1765. OAN testing using paraffin oils or epoxidized sunflower oils on
some standard blacks and specialty blacks including powder products may result in unacceptable differences as compared to OAN
testing with DBP oil. Paraffin and epoxidized sunflower oils are considered non-hazardous; some paraffin oils are FDA approved.
For any of the oils, Sections 8-11 (Calibration, Procedure, Calculation, and Report) are to be consistent with the oil selected for
use. Referee testing between suppliers and users should use DBP oil until such time that precision data are available for alternate
oils.
1
This test method is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.11 on Carbon Black Structure.
Current edition approved July 1, 2012July 1, 2013. Published November 2012August 2013. Originally approved in 1965. Last previous edition approved in 20112012 as
D2414 – 11.D2414 – 12. DOI: 10.1520/D2414-12.10.1520/D2414-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Deutsches Institut fur Normung e.V.(DIN), Burggrafenstrasse 6, 10787 Berlin, Germany, http://www.din.de.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2414 − 13
4. Significance and Use
4.1 The oil absorption number of a carbon black is related to the pro
...

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