ASTM WK36122

    New Test Method for Determination of p-Toluic Acid and 4-Carboxybenzaldehyde in Purified Terephthalic Acid by High Performance Capillary Electrophoresis

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    Developed by Subcommittee: D16.02 | Committee D16 | Contact Staff Manager



    WK36122

    1. Scope

    This test method covers the determination of the 4-carboxybenzaldehyde (4-CBA) and p-Toluic acid (p-TOL) in purified terephthalic acid (PTA) for industrial use by high performance capillary electrophoresis

    The presence of 4-CBA and p-TOL in PTA product needs to be well controlled,since the two impurities may affect the polycondensation of terephthalic acid and ethylene glycol. The HPCE method will be adopted by PTA producers and customers for quality control and PTA trade.


    Keywords

    4-carboxybenzaldehyde (4-CBA);p-Toluic acid (p-TOL);purified terephthalic acid (PTA);high performance capillary electrophoresis(HPCE).

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    01-23-2012

    Technical Contact:
    Yuhong Zhang

    Status:
    Draft Under Development