ASTM WK45556

    Revision of D1765 - 13 Standard Classification System for Carbon Blacks Used in Rubber Products

    (What is a Work Item?)

    Active Standard: D1765 - 14

    Developed by Subcommittee: D24.41 | Committee D24 | Contact Staff Manager


    1. Rationale

    ASTM D 1765 table 1 classifies the different Carbon Blacks by their analytical properties. For N 990 a target for the Oil Absorption Number is reported to be 43 m3/kg. Reviewing the analytical data from different producers it is obvious that this target is not realistic no matter if tested with DBP, paraffinic oil or epoxidized fatty acid ester. Therefore this target number should be revised in order to reflect the correct long term data, measured in the history of N 990 production.


    carbon black; classification of carbon blacks; industry reference blacks; typical properties of carbon black types;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Ricky Magee


    D24 (14-01)

    Ballot Item Approved as D1765-2014 and Pending Publication