ASTM D5817-20

Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing

SIGNIFICANCE AND USE
4.1 Several test methods for carbon black require the reduction in sample size or the blending of the test sample to reduce the variation of the measured characteristic. Other factors being equal, larger samples will tend to be more representative of the total supply. This practice provides procedures for reducing the large sample obtained from the bag and bulk sampling practices to a convenient size for conducting a number of tests to describe the material and measure its quality in such a manner that the smaller portion is most likely to be a representation of the bulk sample. Failure to follow the procedures in this practice could result in providing a nonrepresentative sample to be used in subsequent testing. Individual test methods provide for minimum amounts of material to be tested.  
4.2 Test Method A, Reduction of Sample Size, is typically used to obtain an aliquot from a large sample, splitting a black into two or more equal portions, or reducing a blended black from Test Method B to a specified sample size. The final sample is always smaller than the original sample and would not be considered to be a “well blended” sample.  
4.3 Test Method B, Blending of Carbon Black, is typically used to prepare a homogeneous sample. The homogeneous sample may be used for several tests (see Note 2) or may be reduced in size by Test Method A. The final sample size is the same as the original.  
4.4 When a sample is to be blended and reduced, the sample should be blended (Test Method B) before reduction (Test Method A). The blending and reduction must be done before the sample is dried (Test Method C).
SCOPE
1.1 This practice describes the procedure for blending of pelleted carbon black, the procedure for the reduction of gross samples of pelleted carbon black to the appropriate size for testing and the preparation of the sample for testing. These techniques are intended to minimize variations in measured characteristics between test samples. Standard terminology relating to carbon black samples is found in Terminology D3053. The classification system for carbon blacks used in rubber products can be found in Classification System D1765.  
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: 31-May-2020
• ICS: 71.060.10 - Chemical elements
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.61 - Carbon Black Sampling and Statistical Analysis

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

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: D5817 − 20
Standard Practice for
Carbon Black, Pelleted—Reduction, Blending, and Drying of
1
Gross Samples for Testing
This standard is issued under the fixed designation D5817; 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 D1509 Test Methods for Carbon Black—Heating Loss
D1510 Test Method for Carbon Black—Iodine Adsorption
1.1 This practice describes the procedure for blending of
Number
pelleted carbon black, the procedure for the reduction of gross
D1511 Test Method for Carbon Black—Pellet Size Distri-
samples of pelleted carbon black to the appropriate size for
bution
testing and the preparation of the sample for testing. These
D1512 Test Methods for Carbon Black—pH Value
techniques are intended to minimize variations in measured
D1513 Test Method for Carbon Black, Pelleted—Pour Den-
characteristics between test samples. Standard terminology
sity
relating to carbon black samples is found in Terminology
D1514 Test Method for Carbon Black—Sieve Residue
D3053. The classification system for carbon blacks used in
D1618 Test Method for Carbon Black Extractables—
rubber products can be found in Classification System D1765.
Transmittance of Toluene Extract
1.2 The values stated in SI units are to be regarded as the
D1619 Test Methods for Carbon Black—Sulfur Content
standard. The values given in parentheses are for information
D1765 Classification System for Carbon Blacks Used in
only.
Rubber Products
1.3 This standard does not purport to address all of the
D1799 Practice for Carbon Black—Sampling Packaged
safety concerns, if any, associated with its use. It is the
Shipments
responsibility of the user of this standard to establish appro-
D1900 Practice for Carbon Black—Sampling Bulk Ship-
priate safety, health, and environmental practices and deter-
ments
mine the applicability of regulatory limitations prior to use.
D2414 Test Method for Carbon Black—Oil Absorption
1.4 This international standard was developed in accor-
Number (OAN)
dance with internationally recognized principles on standard-
D3053 Terminology Relating to Carbon Black
ization established in the Decision on Principles for the
D3191 Test Methods for Carbon Black in SBR (Styrene-
Development of International Standards, Guides and Recom-
Butadiene Rubber)—Recipe and Evaluation Procedures
mendations issued by the World Trade Organization Technical
D3192 Test Methods for Carbon Black Evaluation in NR
Barriers to Trade (TBT) Committee.
(Natural Rubber)
D3265 Test Method for Carbon Black—Tint Strength
2. Referenced Documents
D3493 Test Method for Carbon Black—Oil Absorption
2
2.1 ASTM Standards:
Number of Compressed Sample (COAN)
D412 Test Methods forVulcanized Rubber andThermoplas-
D5230 Test Method for Carbon Black—Automated Indi-
tic Elastomers—Tension
vidual Pellet Hardness
D1506 Test Methods for Carbon Black—Ash Content
D6556 Test Method for Carbon Black—Total and External
D1508 Test Method for Carbon Black, Pelleted Fines and
Surface Area by Nitrogen Adsorption
Attrition D7854 Test Method for Carbon Black-Void Volume at Mean
Pressure
1
This practice is under the jurisdiction of ASTM Committee D24 on Carbon
3. Summary of Test Methods
Black and is the direct responsibility of Subcommittee D24.61 on Carbon Black
Sampling and Statistical Analysis.
3.1 Test Method A—Reduction of Sample Size:
CurrenteditionapprovedJune1,2020.PublishedJuly2020.Originallyapproved
3.1.1 The gross bulk sample is poured through the riffle
in 1995. Last previous edition approved in 2019 as D5817 – 19. DOI: 10.1520/
D5817-20.
sample splitter.Aportion of the sample is reintroduced into the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
splitter as many times as necessary to reduce the gross sample
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
to the size desired for the intended test portion.The test portion
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. may not be homogeneous.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5817 − 20
3.2 Test Method B—Blending of Carbon Black:
3.2.1 The gross sample is poured through the riffle sample
splitter a minimum of four times in a specific sequence to
prepare a homogeneous test portion. The black must be
cross-blended to
...

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: D5817 − 19 D5817 − 20
Standard Practice for
Carbon Black, Pelleted—Reduction, Blending, and Drying of
1
Gross Samples for Testing
This standard is issued under the fixed designation D5817; 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 practice describes the procedure for blending of pelleted carbon black, the procedure for the reduction of gross samples
of pelleted carbon black to the appropriate size for testing and the preparation of the sample for testing. These techniques are
intended to minimize variations in measured characteristics between test samples. Standard terminology relating to carbon black
samples is found in Terminology D3053. The classification system for carbon blacks used in rubber products can be found in
Classification System D1765.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension
D1506 Test Methods for Carbon Black—Ash Content
D1508 Test Method for Carbon Black, Pelleted Fines and Attrition
D1509 Test Methods for Carbon Black—Heating Loss
D1510 Test Method for Carbon Black—Iodine Adsorption Number
D1511 Test Method for Carbon Black—Pellet Size Distribution
D1512 Test Methods for Carbon Black—pH Value
D1513 Test Method for Carbon Black, Pelleted—Pour Density
D1514 Test Method for Carbon Black—Sieve Residue
D1618 Test Method for Carbon Black Extractables—Transmittance of Toluene Extract
D1619 Test Methods for Carbon Black—Sulfur Content
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
D2414 Test Method for Carbon Black—Oil Absorption Number (OAN)
D3053 Terminology Relating to Carbon Black
D3191 Test Methods for Carbon Black in SBR (Styrene-Butadiene Rubber)—Recipe and Evaluation Procedures
D3192 Test Methods for Carbon Black Evaluation in NR (Natural Rubber)
D3265 Test Method for Carbon Black—Tint Strength
D3493 Test Method for Carbon Black—Oil Absorption Number of Compressed Sample (COAN)
1
This practice is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.61 on Carbon Black Sampling
and Statistical Analysis.
Current edition approved Nov. 1, 2019June 1, 2020. Published December 2019July 2020. Originally approved in 1995. Last previous edition approved in 20142019 as
D5817 – 03a (2014).D5817 – 19. DOI: 10.1520/D5817-19.10.1520/D5817-20.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D5817 − 20
D5230 Test Method for Carbon Black—Automated Individual Pellet Hardness
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. Summary of Test Methods
3.1 Test Method A—Reduction of Sample Size:
3.1.1 The gross bulk sample is poured through the riffle sample splitter. A portion of the sample is reintroduced into the splitter
as many times as necessary to reduce the gross sample to the size desired for the intended test portion. The test portion may not
be homogeneous.
3.2 Test Method B—Blending of Carbon Black
...