ASTM D7849-23
(Classification)Standard Classification for Nomenclature of Reference Materials of Committee D24
Standard Classification for Nomenclature of Reference Materials of Committee D24
SIGNIFICANCE AND USE
3.1 Standard reference materials are used for calibration and verification of many carbon black tests under the jurisdiction of D24. This practice defines a systematic means of naming these reference materials and does so in a manner to clearly differentiate between the various reference materials as well as their version.
SCOPE
1.1 This classification covers instructions for naming the reference materials used by Committee D24.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.3 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
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Standards Content (Sample)
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.
Designation: D7849 − 23
Standard Classification for
1
Nomenclature of Reference Materials of Committee D24
This standard is issued under the fixed designation D7849; 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.
1. Scope reference materials and does so in a manner to clearly
differentiate between the various reference materials as well as
1.1 This classification covers instructions for naming the
their version.
reference materials used by Committee D24.
1.2 This standard does not purport to address all of the
4. Basis of Classification
safety concerns, if any, associated with its use. It is the
4.1 ASTM Committee D24 has established five different
responsibility of the user of this standard to establish appro-
types of reference materials which serve to improve test
priate safety, health, and environmental practices and deter-
precision of analytical tests on carbon black as well as
mine the applicability of regulatory limitations prior to use.
3
in-rubber evaluation of carbon black.
1.3 This international standard was developed in accor-
4.1.1 SRB (Standard Reference Blacks)—A set of eight
dance with internationally recognized principles on standard-
carbon blacks, seven furnace blacks, and one thermal black
ization established in the Decision on Principles for the
with defined target values for iodine adsorption number (Test
Development of International Standards, Guides and Recom-
Method D1510), STSA (Test Method D6556), NSA (Test
mendations issued by the World Trade Organization Technical
Method D6556), OAN (Test Method D2414), COAN (Test
Barriers to Trade (TBT) Committee.
Method D3493), Tint Strength (Test Method D3265), and
2. Referenced Documents VV50 (Test Method D7854). The SRBs can be used to verify
2 analytical test equipment and test procedures. For OAN and
2.1 ASTM Standards:
COAN, their application may be needed to normalize mea-
D1510 Test Method for Carbon Black—Iodine Adsorption
sured data. For VV50, their application is mandatory to
Number
normalize measured data.
D1619 Test Methods for Carbon Black—Sulfur Content
4.1.2 ITRB (Industry Tint Reference Black)—ITRB repre-
D2414 Test Method for Carbon Black—Oil Absorption
sents a standard carbon black of the N330 type. It is used for
Number (OAN)
verification and standardization in the test method for Tint
D3265 Test Method for Carbon Black—Tint Strength
Strength (Test Method D3265).
D3493 Test Method for Carbon Black—Oil Absorption
4.1.3 INR (Iodine Number Reference, previously designated
Number of Compressed Sample (COAN)
“HT”)—INR consist of three different reference blacks which
D6556 Test Method for Carbon Black—Total and External
have been heat-treated in order to provide particularly high
Surface Area by Nitrogen Adsorption
stability of the iodine number over a long period of time, that
D7854 Test Method for Carbon Black-Void Volume at Mean
is, over many years.
Pressure
4.1.4 IRB (Industry Reference Black)—IRB is a carbon
black of the N330 type which is produced in large quantities in
3. Significance and Use
order to serve as a reference material in rubber compounds.
3.1 Standard reference materials are used for calibration and
In-rubber properties of this reference black are determined
verification of many carbon black tests under the jurisdiction of
during round robin testing when the material is introduced.
D24. This practice defines a systematic means of naming these
4.1.5 STRM (Sulfur Test Reference Materials)—A set of five
carbon blacks with defined target values for sulfur in carbon
1
This classification is under the jurisdiction of ASTM Committee D24 on
black testing (Test Methods D1619).
Carbon Black and is the direct responsibility of Subcommittee D24.41 on Carbon
4.1.6 HNSA (High Nitrogen Surface Area)—HNSA is a high
Black Nomenclature and Terminology.
surface area carbon black for use by those laboratories with a
Current edition approved May 1, 2023. Published May 2023. Originally
need to test high surface area carbon blacks for the NSA (Test
approved in 2014. Last previous edition approved in 2018 as D7849 – 18a. DOI:
10.1520/D7849-23.
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 Target values and control limits are published on the website of the distributor
the ASTM website. of these refe
...
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: D7849 − 18a D7849 − 23
Standard Classification for
1
Nomenclature of Reference Materials of Committee D24
This standard is issued under the fixed designation D7849; 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.
1. Scope
1.1 This classification covers instructions for naming the reference materials used by Committee D24.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.3 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:
D1510 Test Method for Carbon Black—Iodine Adsorption Number
D1619 Test Methods for Carbon Black—Sulfur Content
D2414 Test Method for Carbon Black—Oil Absorption Number (OAN)
D3265 Test Method for Carbon Black—Tint Strength
D3493 Test Method for Carbon Black—Oil Absorption Number of Compressed Sample (COAN)
D6556 Test Method for Carbon Black—Total and External Surface Area by Nitrogen Adsorption
D7854 Test Method for Carbon Black-Void Volume at Mean Pressure
3. Significance and Use
3.1 Standard reference materials are used for calibration and verification of many carbon black tests under the jurisdiction of D24.
This practice defines a systematic means of naming these reference materials and does so in a manner to clearly differentiate
between the various reference materials as well as their version.
4. Basis of Classification
4.1 ASTM Committee D24 has established five different types of reference materials which serve to improve test precision of
3
analytical tests on carbon black as well as in-rubber evaluation of carbon black.
4.1.1 SRB (Standard Reference Blacks)—A set of seveneight carbon blacks, six furnace blacks seven furnace blacks, and one
1
This classification is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.41 on Carbon Black
Nomenclature and Terminology.
Current edition approved Nov. 1, 2018May 1, 2023. Published November 2018May 2023. Originally approved in 2014. Last previous edition approved in 2018 as
D7849 – 18.D7849 – 18a. DOI: 10.1520/D7849-18A.10.1520/D7849-23.
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
Target values and control limits are published on the website of the distributor of these reference materials, Balentine Enterprise Inc.: http://carbonstandard.com/.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D7849 − 23
thermal black with defined target values for iodine adsorption number (Test Method D1510), STSA (Test Method D6556), NSA
(Test Method D6556), OAN (Test Method D2414), COAN (Test Method D3493) and ), Tint Strength (Test Method D3265) and
one thermal black with defined values for STSA (Test Method D6556), NSA (Test Method D6556) and OANVV50 (Test Method
D2414D7854). The SRBs can be used to verify analytical test equipment and test procedures. For OAN and COAN, their
application may be needed to normalize measured data. For VV50, their application is mandatory to normalize measured data.
4.1.2 ITRB (Industry Tint Reference Black)—ITRB represents a standard carbon black of the N330 type. It is used for verification
and standardization in the test method for Tint Strength (Test Method D3265).
4.1.3 INR (Iodine Number Reference, previously designated “HT”)—INR consist of three different reference blacks which have
been heat-treated in order to provide particularly high stability of the iodine number over a long period of time, that is, over many
years.
4.1.4 IRB (Industry Reference Black)—IRB is a carbon black of the N3
...
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