ASTM D7849-18
(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.
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Designation:D7849 −18
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 4. Basis of Classification
1.1 This classification covers instructions for naming the 4.1 ASTM Committee D24 has established four different
reference materials used by Committee D24. types of reference materials which serve to improve test
precision of analytical tests on carbon black as well as
1.2 This standard does not purport to address all of the
3
in-rubber evaluation of carbon black.
safety concerns, if any, associated with its use. It is the
4.1.1 SRB (Standard Reference Blacks)—A set of seven
responsibility of the user of this standard to establish appro-
carbon blacks, six furnace blacks with defined target values for
priate safety, health, and environmental practices and deter-
iodine adsorption number (Test Method D1510), STSA (Test
mine the applicability of regulatory limitations prior to use.
Method D6556), NSA (Test Method D6556), OAN (Test
1.3 This international standard was developed in accor-
Method D2414), COAN (Test Method D3493) and Tint
dance with internationally recognized principles on standard-
Strength (Test Method D3265) and one thermal black with
ization established in the Decision on Principles for the
defined values for STSA (Test Method D6556), NSA (Test
Development of International Standards, Guides and Recom-
Method D6556) and OAN (Test Method D2414). The SRBs
mendations issued by the World Trade Organization Technical
can be used to verify analytical test equipment and test
Barriers to Trade (TBT) Committee.
procedures. For OAN and COAN, their application is manda-
2. Referenced Documents tory to normalize measured data.
2
4.1.2 ITRB (Industry Tint Reference Black)—ITRB repre-
2.1 ASTM Standards:
sents a standard carbon black of the N330 type. It is used for
D1510 Test Method for Carbon Black—Iodine Adsorption
verification and standardization in the test method for Tint
Number
Strength (Test Method D3265).
D2414 Test Method for Carbon Black—Oil Absorption
4.1.3 INR (Iodine Number Reference, previously designated
Number (OAN)
“HT”)—INR consist of three different reference blacks which
D3265 Test Method for Carbon Black—Tint Strength
have been heat-treated in order to provide particularly high
D3493 Test Method for Carbon Black—Oil Absorption
stability of the iodine number over a long period of time, that
Number of Compressed Sample (COAN)
is, over many years.
D6556 Test Method for Carbon Black—Total and External
4.1.4 IRB (Industry Reference Black)—IRB is a carbon
Surface Area by Nitrogen Adsorption
black of the N330 type which is produced in large quantities in
order to serve as a reference material in rubber compounds.
3. Significance and Use
In-rubber properties of this reference black are determined
3.1 Standardreferencematerialsareusedforcalibrationand
during a round robin tests when the material is introduced.
verificationofmanycarbonblacktestsunderthejurisdictionof
4.2 Nomenclature:
D24. This practice defines a systematic means of naming these
4.2.1 All letters in the designation are in caps.
reference materials and does so in a manner to clearly
4.2.2 The reference material is identified by its type: SRB,
differentiate between the various reference materials as well as
ITRB, INR or IRB.
their version.
4.2.3 When referring to just the material set, the set number
follows the type, with no special characters or space as a
1
This classification is under the jurisdiction of ASTM Committee D24 on
separator, for example: SRB8.
Carbon Black and is the direct responsibility of Subcommittee D24.41 on Carbon
4.2.4 In the case where several materials form a set (like
Black Nomenclature and Terminology.
Current edition approved June 1, 2018. Published June 2018. Originally
SRB and INR materials), a letter is added, starting with A and
approved in 2014. Last previous edition approved in 2014 as D7849 – 14. DOI:
progressing in alphabetical order. Preferably, the order of the
10.1520/D7849-18.
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 reference materials, Balentine Enterprise Inc.: http://carbonstandard.com/.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700,
...
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 − 14 D7849 − 18
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 safety, health, and healthenvironmental 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
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
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 four 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 seven carbon blacks, six furnace blacks 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 OAN (Test Method D2414). The SRBs can be used to verify analytical test
equipment and test procedures. For OAN and COAN, 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.
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 June 1, 2014June 1, 2018. Published June 2014June 2018. Originally approved in 2014. Last previous edition approved in 2014 as D7849 – 14.
DOI: 10.1520/D7849-14.10.1520/D7849-18.
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
1
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D7849 − 18
4.1.4 IRB (Industry Reference Black)—IRB is a carbon black of the N330 type which is produced in large quantities in order
to serve as a reference material in rubber compounds. In-rubber properties of this reference black are determined during a round
robin tests when the material is introduced.
4.2 Nomenclature:
4
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