ASTM E475 – 10 Method for Assay of Di-tert-Butyl Peroxide Using Gas Chromatography

ASTM E475 – 10 explains the assay of di-tert-butyl peroxide with the help of gas chromatography. It is also applicable t o commercial di-tert-butyl peroxide, with contains small impurities. Flame ionization and the Karl fisher method are used to perform this method. Its values are stated in SI units as they are to be regarded as standard.... Read More

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    ASTM E475 – 10 is highly significant for the assay of Di-tert-Butyl Peroxide as it is a widely used catalyst. This test method provides a procedure for measuring the active peroxide content of a commercial di-tert-butyl peroxide reaction initiator. Therefore, it is of great importance.


    A sample is first mixed with water in dodecane then it is injected into a gas chromatograph. Then di-tert-butyl peroxide is purified from impurities by using a gas program, containing helium as a carrier. The flame ionization detector response is recorded, and the peak areas are measured. The assay of di-tert-butyl peroxide is corrected for water, which is determined using a separate Karl Fischer titration. The area percent of di-tert-butyl peroxide is considered to be equal to mass percent.


    In this way, by performing ASTM E475 – 10 carefully, Assay of Di-tert-Butyl Peroxide is successfully done by using gas chromatography


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