ASTM E298-08 Standard Test Methods for Assay of Organic Peroxides

ASTM E298–08 test method covers the procedures for assaying organic peroxides to determine if they are suitable for thei r intended use. Organic peroxides use as chemical intermediates, catalysts, and initiators. The apparatus used is Iodine Flasks of 250-mL with stoppers.... Read More

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    Scope:

    ASTM E298–08 test method provides an assay of organic peroxides. Two test procedures are performed, depending upon the ease of reduction.

    Test Procedure:

    Test MethodSections
    SODIUM IODIDE, ROOM TEMPERATURE TESTMETHOD5-13
    SODIUM IODIDE, 60°C TEST METHOD14-22

    Results:

    Calculate the assay as follows:

    Where:

    A = mL of Na2S2O3 solution required for titration of the sample,

    B = mL of Na2S2O3 solution required for titration of the blank,

    N = meq/mL (N) of the Na2S2O3 solution,

    C = number of peroxide groups in the molecule,

    M = molecular weight of the compound, and

    W = grams of sample used.

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