ASTM WK36122

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

    (What is a Work Item?)

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


    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


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


    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.

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

    Citing ASTM Standards
    Back to Top
    Work Item Status

    Date Initiated:

    Technical Contact:
    Yuhong Zhang

    Draft Under Development