ASTM D8178-22

Standard Terminology Relating to Recovered Carbon Black (rCB)

SCOPE
1.1 This terminology covers a compilation of definitions of technical terms used in the recovered carbon black industry. Terms that are generally understood or adequately defined in other readily available sources are not included.  
1.2 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-2022
• ICS: 01.040.71 - Chemical technology (Vocabularies)
• ICS: 71.060.10 - Chemical elements
• Technical Committee: D36 - Recovered Carbon Black (rCB)
• Drafting Committee: D36.30 - Nomenclature

Standards Content (Sample)

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: D8178 − 20a D8178 − 22
Standard Terminology Relating to
1
Recovered Carbon Black (rCB)
This standard is issued under the fixed designation D8178; 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 terminology covers a compilation of definitions of technical terms used in the recovered carbon black industry. Terms
that are generally understood or adequately defined in other readily available sources are not included.
1.2 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:
D3053 Terminology Relating to Carbon Black
3. Terminology
3.1 Definitions:
carbon black, n—this definition is under the jurisdiction of Committee D24 and maintained in Terminology D3053.
char, n—solid carbonaceous residue formed during carbonization of organic compounds.
raw rCB, n—solid material resulting from thermal decomposition of rubber goods which contain carbon black; exhibiting poor
dispersion so requiring milling to become rCB.
recovered carbon black (rCB), n—solid product recovered via thermal decomposition from rubber goods which contain carbon
black, which is free of wire and fabric, and when milled typically gives semi-reinforcing properties in rubber.
DISCUSSION—
A type of filler derived from post-consumer rubber goods (feedstock) via a variety of thermal decomposition processes. This semi-reinforcing filler
predominantly consisting of carbon, also containing inorganic compounding ingredients originating from the feedstock but is free of wire and fabric.
This material, typically pelletized currently marketed under the name recovered carbon black (rCB), should not be confused with “Raw rCB” which
exhibits poor dispersion and minimal reinforcing properties when used in rubber compounding.
recovered carbon black pellet, n—a relatively large agglomerate mass that has been densified in spheroidal form to facilitate
handling and processing.
1
This terminology is under the jurisdiction of ASTM Committee D36 on Recovered Carbon Black (rCB) and is the direct responsibility of Subcommittee D36.30 on
Nomenclature.
Current edition approved Dec. 1, 2020June 1, 2022. Published January 2021July 2022. Originally approved in 2018. Last previous edition approved in 2020 as
D8178 – 20.D8178 – 20a. DOI: 10.1520/D8178-20A.10.1520/D8178-22.
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 ----------------------
D8178 − 22
APPENDIX
(Nonmandatory Information)
X1. EXISTING STANDARDS RECOGNIZED BY COMMITTEE D36
X1.1 The following is a list of existing standards that are currently available for use in the industry. These standards are maintained
3
by ASTM Committee D24 on Carbon Black; however, they can be applied for use in the rCB industry.
X1.2 In 2017, Committee D36 approved to recognize these standards as acceptable for use in the rCB industry until rCB statistical
data is available that may suggest otherwise.
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
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
D1799 Practice for Carbon Black—Sampling Packaged Shipments
D1900 Practice for Carbon Black—Sampling Bulk Shipments
D1937 Test Method for Carbon Black, Pelleted—Mass Strength
D2663 Test Methods for Carbon Black—Dispersion in Rubber
D3053 Terminology Relating to Carbon Black
D3191 Test Metho
...