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ASTM D4122-17(2023)

(Practice)

Standard Practice for Carbon Black—Evaluation of an Industry Reference Black

Standard Practice for Carbon Black—Evaluation of an Industry Reference Black

SIGNIFICANCE AND USE
3.1 These guidelines are intended to ensure that IRBs are evaluated by a standard procedure.  
3.2 These guidelines are to be used to establish the average physicochemical and physical rubber properties of a lot of carbon black to be used as an IRB.
SCOPE
1.1 This practice covers guidelines for the production and testing for uniformity of a lot of carbon black to be used as an Industry Reference Black (IRB).  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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
Published
Publication Date
30-Apr-2023
ICS
83.040.20 - Rubber compounding ingredients
Technical Committee
D24 - Carbon Black
Drafting Committee
D24.61 - Carbon Black Sampling and Statistical Analysis
Current Stage
Ref Project

Relations

Refers
ASTM D3191-10(2020) - Standard Test Methods for Carbon Black in SBR (Styrene-Butadiene Rubber)—Recipe and Evaluation Procedures
Effective Date
01-Jun-2020

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ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
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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: D4122 − 17 (Reapproved 2023)
Standard Practice for
1
Carbon Black—Evaluation of an Industry Reference Black
This standard is issued under the fixed designation D4122; 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 Transmittance of Toluene Extract
D2414 Test Method for Carbon Black—Oil Absorption
1.1 This practice covers guidelines for the production and
Number (OAN)
testing for uniformity of a lot of carbon black to be used as an
D3182 Practice for Rubber—Materials, Equipment, and Pro-
Industry Reference Black (IRB).
cedures for Mixing Standard Compounds and Preparing
1.2 The values stated in SI units are to be regarded as the
Standard Vulcanized Sheets
standard. The values given in parentheses are for information
D3191 Test Methods for Carbon Black in SBR (Styrene-
only.
Butadiene Rubber)—Recipe and Evaluation Procedures
1.3 This standard does not purport to address all of the
D3192 Test Methods for Carbon Black Evaluation in NR
safety concerns, if any, associated with its use. It is the (Natural Rubber)
responsibility of the user of this standard to establish appro-
D3265 Test Method for Carbon Black—Tint Strength
priate safety, health, and environmental practices and deter- D3493 Test Method for Carbon Black—Oil Absorption
mine the applicability of regulatory limitations prior to use.
Number of Compressed Sample (COAN)
1.4 This international standard was developed in accor- D5230 Test Method for Carbon Black—Automated Indi-
dance with internationally recognized principles on standard-
vidual Pellet Hardness
ization established in the Decision on Principles for the D6556 Test Method for Carbon Black—Total and External
Development of International Standards, Guides and Recom-
Surface Area by Nitrogen Adsorption
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3. Significance and Use
3.1 These guidelines are intended to ensure that IRBs are
2. Referenced Documents
evaluated by a standard procedure.
2
2.1 ASTM Standards:
3.2 These guidelines are to be used to establish the average
D412 Test Methods for Vulcanized Rubber and Thermoplas-
physicochemical and physical rubber properties of a lot of
tic Elastomers—Tension
carbon black to be used as an IRB.
D1506 Test Methods for Carbon Black—Ash Content
D1508 Test Method for Carbon Black, Pelleted Fines and
4. Production, Quality Control, and Quality Assurance
Attrition
D1509 Test Methods for Carbon Black—Heating Loss
4.1 It is assumed that the manufacturer of the IRB will use
D1510 Test Method for Carbon Black—Iodine Adsorption
state-of-the-art techniques to ensure maximum uniformity
Number
throughout the entire production run. The production should be
D1513 Test Method for Carbon Black, Pelleted—Pour Den-
made in one continuous production lot run. The testing called
sity
for in this practice is not intended to be a substitute for
D1514 Test Method for Carbon Black—Sieve Residue
in-process quality control. This interlaboratory study is only
D1618 Test Method for Carbon Black Extractables—
adequate to verify the quality of a homogeneous lot.
4.2 The size of the lot is determined by historical records on
the rate of use. The lot should have an expected life of eight to
1
This practice is under the jurisdiction of ASTM Committee D24 on Carbon
ten years at the most recent rate of use.
Black and is the direct responsibility of Subcommittee D24.61 on Carbon Black
Sampling and Statistical Analysis.
4.3 The black should be bagged in 50 lb polyethylene bags
Current edition approved May 1, 2023. Published June 2023. Originally
ɛ1
to reduce moisture incursion. Each pallet of bagged black
approved in 1982. Last previous edition approved in 2017 as D4122 – 17 . DOI:
10.1520/D4122-17R23.
should be wrapped in plastic to reduce environmental expo-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
sure. Depending on the size of the lot, the bagged black will be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
segregated into equal sized sublots, typically ten to twenty,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. representing some logical subdivision, such as a truck load.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D41
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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.
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