ASTM WK28473

    Revision of D2121 - 07 Standard Test Methods for Polymer Content of Styrene Monomer and AMS (alpha-Methylstyrene)

    (What is a Work Item?)

    Active Standard: D2121 - 15

    Developed by Subcommittee: D16.07 | Committee D16 | Contact Staff Manager


    1. Rationale

    It has been determined that D2121 is not a valid test method for measuring polymer in AMS. A new standard is being written for polymer in AMS. D2121 is being revised to remove all references to the testing of AMS. A negative was received on the first ballot for this revised standard for not including the results from the most recent ILS. These results have been added. Comments received on the ballot have also been addressed in this revision.


    methylstyrene; AMS; polymer; polymer content; styrene; styrene monomer;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Danielle Hodge


    D16 (14-04)

    Ballot Item Approved as D2121-2015 and Pending Publication