ASTM WK36157

    New Test Method for Maleic Acid in Maleic Anhydride by Potentiometric Titration

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


    1. Scope

    This test method covers the determination of free maleic acid in refined maleic anhydride by potentiometric titration. This test method is applicable for all concentrations of maleic acid; however, it is primarily used for concentrations below 0.5 %

    The maleic acid content is usually an indication of exposure to moisture in air. Maleic anhydride reacts with moisture to form maleic acid.The standard will be used by maleic anhydride producers and custmoers for quality control and trade.


    maleic acid; maleic anhydride; titration

    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:

    Technical Contact:
    Yuhong Zhang

    Draft Under Development