ASTM D1510-21

Standard Test Method for Carbon Black—Iodine Adsorption Number

SIGNIFICANCE AND USE
4.1 The iodine adsorption number is useful in characterizing carbon blacks. It is related to the surface area of carbon blacks and is generally in agreement with nitrogen surface area. The presence of volatiles, surface porosity, or extractables will influence the iodine adsorption number. Aging of carbon black can also influence the iodine number.
SCOPE
1.1 This test method covers the determination of the iodine adsorption number of carbon black.  
1.1.1 Method A is the original test method for this determination and Method B is an alternate test method using automated sample processing and analysis.  
1.2 The iodine adsorption number of carbon black has been shown to decrease with sample aging. Iodine Number reference materials have been produced that exhibit stable iodine number upon aging. One or more of these reference materials are recommended for daily monitoring (x-charts) to ensure that the results are within the control limits of the individual reference material. Use all Iodine Number reference materials from a set for standardization of iodine testing (see Section 8) when target values cannot be obtained.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 30-Apr-2021
• ICS: 83.040.20 - Rubber compounding ingredients
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.21 - Carbon Black Surface Area and Related Properties

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D1510 − 21
Standard Test Method for
1
Carbon Black—Iodine Adsorption Number
This standard is issued under the fixed designation D1510; 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 U.S. Department of Defense.
1. Scope D1799 Practice for Carbon Black—Sampling Packaged
Shipments
1.1 This test method covers the determination of the iodine
D1900 Practice for Carbon Black—Sampling Bulk Ship-
adsorption number of carbon black.
ments
1.1.1 Method A is the original test method for this determi-
D4483 Practice for Evaluating Precision for Test Method
nation and Method B is an alternate test method using
Standards in the Rubber and Carbon Black Manufacturing
automated sample processing and analysis.
Industries
1.2 The iodine adsorption number of carbon black has been
D4821 Guide for Carbon Black—Validation of Test Method
shown to decrease with sample aging. Iodine Number refer-
Precision and Bias
ence materials have been produced that exhibit stable iodine
E969 Specification for Glass Volumetric (Transfer) Pipets
3
number upon aging. One or more of these reference materials
2.2 European Standards:
are recommended for daily monitoring (x-charts) to ensure that
ISO/EN/DIN 8655-3 Piston-operated volumetric apparatus -
the results are within the control limits of the individual
Part 3: Piston burettes
reference material. Use all Iodine Number reference materials
3. Summary of Test Methods
from a set for standardization of iodine testing (see Section 8)
when target values cannot be obtained.
3.1 In Test Method A, a weighed sample of carbon black is
treated with a portion of standard iodine solution and the
1.3 The values stated in SI units are to be regarded as
mixture shaken and centrifuged. The excess iodine is then
standard. No other units of measurement are included in this
titrated with standard sodium thiosulfate solution, and the
standard.
adsorbed iodine is expressed as a fraction of the total mass of
1.4 This standard does not purport to address all of the
black.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 3.2 In Test Method B, a weighed sample of carbon black is
priate safety, health, and environmental practices and deter- treated with a portion of standard iodine solution using an
mine the applicability of regulatory limitations prior to use. automated sample processor where the mixture is stirred,
1.5 This international standard was developed in accor- settled and aliquoted for automatic titration. The excess iodine
dance with internationally recognized principles on standard- is titrated with standard sodium thiosulfate solution, and the
ization established in the Decision on Principles for the adsorbed iodine is expressed as a fraction of the total mass of
Development of International Standards, Guides and Recom- black.
mendations issued by the World Trade Organization Technical
4. Significance and Use
Barriers to Trade (TBT) Committee.
4.1 The iodine adsorption number is useful in characterizing
2. Referenced Documents
carbon blacks. It is related to the surface area of carbon blacks
2
and is generally in agreement with nitrogen surface area. The
2.1 ASTM Standards:
presence of volatiles, surface porosity, or extractables will
influence the iodine adsorption number. Aging of carbon black
1
This test method is under the jurisdiction of ASTM Committee D24 on Carbon
can also influence the iodine number.
Black and is the direct responsibility of Subcommittee D24.21 on Carbon Black
Surface Area and Related Properties.
5. Apparatus
Current edition approved May 1, 2021. Published July 2021. Originally approved
in 1957. Last previous edition approved in 2019 as D1510 – 19a. DOI: 10.1520/ 5.1 Vials, glass, optically clear type, with polyethylene
3
D1510-21.
stoppers, 45 cm .
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from International Organization for Standardization (ISO), 1, ch. de
the ASTM website. la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1510 − 21
5.2 Gravity Convection Drying Oven, capable of maintain- 6.4 Potassium Iodate Solution, c(KIO ) = 0.0065
...

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: D1510 − 19a D1510 − 21
Standard Test Method for
1
Carbon Black—Iodine Adsorption Number
This standard is issued under the fixed designation D1510; 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 U.S. Department of Defense.
1. Scope
1.1 This test method covers the determination of the iodine adsorption number of carbon black.
1.1.1 Method A is the original test method for this determination and Method B is an alternate test method using automated sample
processing and analysis.
1.2 The iodine adsorption number of carbon black has been shown to decrease with sample aging. Iodine Number reference
materials have been produced that exhibit stable iodine number upon aging. One or more of these reference materials are
recommended for daily monitoring (x-charts) to ensure that the results are within the control limits of the individual reference
material. Use all Iodine Number reference materials from a set for standardization of iodine testing (see Section 8) when target
values cannot be obtained.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D1799 Practice for Carbon Black—Sampling Packaged Shipments
D1900 Practice for Carbon Black—Sampling Bulk Shipments
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
E969 Specification for Glass Volumetric (Transfer) Pipets
3
2.2 European Standards:
ISO/EN/DIN 8655-3 Piston-operated volumetric apparatus - Part 3: Piston burettes
1
This test method is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.21 on Carbon Black Surface
Area and Related Properties.
Current edition approved Aug. 15, 2019May 1, 2021. Published September 2019July 2021. Originally approved in 1957. Last previous edition approved in 2019 as
D1510 – 19.D1510 – 19a. DOI: 10.1520/D1510-19A.10.1520/D1510-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1510 − 21
3. Summary of Test Methods
3.1 In Test Method A, a weighed sample of carbon black is treated with a portion of standard iodine solution and the mixture
shaken and centrifuged. The excess iodine is then titrated with standard sodium thiosulfate solution, and the adsorbed iodine is
expressed as a fraction of the total mass of black.
3.2 In Test Method B, a weighed sample of carbon black is treated with a portion of standard iodine solution using an automated
sample processor where the mixture is stirred, settled and aliquoted for automatic titration. The excess iodine is titrated with
standard sodium thiosulfate solution, and the adsorbed iodine is expressed as a fraction of the total mass of black.
4. Significance and Use
4.1 The iodine adsorption number is useful in characterizing carbon blacks. It is related to the surface area of carbon blacks and
is generally in agreement with nitrogen surface area. The presence of volatiles, surface
...