GSO ASTM D1765:2021
Gulf Standard
Current Edition
·
Approved on
01 July 2021
·
Standard Classification System for Carbon Blacks Used in Rubber Products
GSO ASTM D1765:2021 Files
English
5 Pages
Current Edition
Reference Language
GSO ASTM D1765:2021 Scope
1.1 This classification system covers the classification of
rubber-grade carbon blacks by the use of a four-character
nomenclature system. The first character gives some indication
of the influence of the carbon black on the rate of cure of a
typical rubber compound containing the black. The second
character gives information on the average surface area of the
carbon black. The last two characters are assigned arbitrarily.
1.2 All rubber-grade carbon blacks for which a number is
currently assigned at the time of publication of this classification system are listed in Table 1 together with some of their
typical properties. ASTM classification numbers (“N” or “S”
designation) not listed in Table 1 have either been withdrawn
or are not currently assigned. The use of inactive or unassigned
N or S designations is prohibited until such a time as the
designation is officially reactivated or assigned by Subcommittee D24.41
1.3 The values stated in SI units are to be regarded as
standard. The values given in parentheses are for information
only.
1.4 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.
1.5 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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