ASTM D5817-03a

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

SIGNIFICANCE AND USE
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.
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.
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 3) or may be reduced in size by Test Method A. The final sample size is the same as the original.
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 D 3053.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Nov-2003
• ICS: 71.060.10 - Chemical elements
• Technical Committee: D24 - Carbon Black
• Drafting Committee: D24.61 - Carbon Black Sampling and Statistical Analysis

Relations

• Replaces: ASTM D5817-03 - Standard Practice for Carbon Black, Pelleted-Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 01-Dec-2003
• Replaced By: ASTM D5817-03a(2008) - Standard Practice for Carbon Black, Pelleted - Reduction, Blending, and Drying of Gross Samples for Testing
• Effective Date: 01-Jul-2008
• Referred By: ASTM D1511-12(2023) - Standard Test Method for Carbon Black—Pellet Size Distribution
• Effective Date: 01-Dec-2003
• Referred By: ASTM D8466-22 - Standard Guide for Recovered Carbon Black—Carbon Black Test Methods for Testing rCB
• Effective Date: 01-Dec-2003
• Referred By: ASTM D1900-20 - Standard Practice for Carbon Black—Sampling Bulk Shipments
• Effective Date: 01-Dec-2003
• Referred By: ASTM D1799-20 - Standard Practice for Carbon Black—Sampling Packaged Shipments
• Effective Date: 01-Dec-2003
• Referred By: ASTM D1508-23 - Standard Test Method for Carbon Black, Pelleted Fines and Attrition
• Effective Date: 01-Dec-2003

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:D5817–03a
Standard Practice for
Carbon Black, Pelleted—Reduction, Blending, and Drying of
1
Gross Samples for Testing
This standard is issued under the fixed designation D 5817; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope D 1618 Test Method for Carbon Black Extractables—
Transmittance of Toluene Extract
1.1 This practice describes the procedure for blending of
D 1619 Test Methods for Carbon Black—Sulfur Content
pelleted carbon black, the procedure for the reduction of gross
D 1765 Classification System for Carbon Blacks Used in
samples of pelleted carbon black to the appropriate size for
Rubber Products
testing and the preparation of the sample for testing. These
D 1799 Practice for Carbon Black—Sampling Packaged
techniques are intended to minimize variations in measured
Shipments
characteristics between test samples. Standard terminology
D 1900 Practice for Carbon Black—Sampling Bulk Ship-
relating to carbon black samples is found in Terminology
ments
D 3053.
D 2414 Test Method for Carbon Black—Oil Absorption
1.2 The values stated in SI units are to be regarded as the
Number
standard. The values given in parentheses are for information
D 3053 Terminology Relating to Carbon Black
only.
D 3191 Test Methods for Carbon Black in SBR (Styrene-
1.3 This standard does not purport to address all of the
Butadiene Rubber)—Recipe and Evaluation Procedures
safety concerns, if any, associated with its use. It is the
D 3192 Test Methods for Carbon Black Evaluation in NR
responsibility of the user of this standard to establish appro-
(Natural Rubber)
priate safety and health practices and determine the applica-
D 3265 Test Method for Carbon Black—Tint Strength
bility of regulatory limitations prior to use.
D 3493 Test Method for Carbon Black—Oil Absorption
2. Referenced Documents
Number of Compressed Sample
2
D 5230 Test Method for Carbon Black—Automated Indi-
2.1 ASTM Standards:
vidual Pellet Hardness
D 412 Test Methods for Vulcanized Rubber and Thermo-
D 6556 Test Method for Carbon Black—Total and External
plastic Elastomers—Tension
Surface Area by Nitrogen Adsorption
D 1506 Test Methods for Carbon Black—Ash Content
D 1508 Test Method for Carbon Black, Pelleted Fines and
3. Summary of Test Methods
Attrition
3.1 Test Method A—Reduction of Sample Size:
D 1509 Test Methods for Carbon Black—Heating Loss
3.1.1 The gross bulk sample is poured through the riffle
D 1510 Test Method for Carbon Black—Iodine Adsorption
sample splitter.Aportion of the sample is reintroduced into the
Number
splitter as many times as necessary to reduce the gross sample
D 1511 Test Method for Carbon Black—Pellet Size Distri-
tothesizedesiredfortheintendedtestportion.Thetestportion
bution
may not be homogeneous.
D 1512 Test Methods for Carbon Black—pH Value
3.2 Test Method B—Blending of Carbon Black:
D 1513 Test Method for Carbon Black, Pelleted—Pour
3.2.1 The gross sample is poured through the riffle sample
Density
splitter a minimum of four times in a specific sequence to
D 1514 Test Method for Carbon Black—Sieve Residue
prepare a homogeneous test portion. The black must be
cross-blended to accomplish a homogeneous portion for test-
1
This practice is under the jurisdiction of ASTM Committee D24 on Carbon
ing.
Black and is the direct responsibility of Subcommittee D24.61 on Carbon Black
3.3 Test Method C—Drying of Carbon Black:
Sampling and Statistical Analysis.
3.3.1 For all test methods listed in Section 2 except: the
Current edition approved Dec. 1, 2003. Published January 2004. Originally
approved in 1995. Last previous edition approved in 2003 as D 5817 – 03.
Fines and Attrition (Test Method D 1508), Heating Loss (Test
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Methods D 1509), Pellet Size Distribution (Test Method
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
D 1511), pH Value (Test Methods D 1512), Pour Density (Test
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 ----------------------
D5817–03a
Method D 1513), Sieve Residue (Test Method D 1514), Sulfur
Content (Test Methods D 1619), and Pellet Hardness (Test
Method D 5230) test methods, the sample must be dried before
testing begins.
NOTE 1—Samples that are known to be dry (< 1.0 % moisture) due to
prior preparation or production processing may be tested without further
drying.
4. Significance and Use
...