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    GB/T 23975-2009
    Determination of the quantity of tetrachlorophthalic anhydride in dye and pigment products

    GB/T 23975-2009 "Determination of Tetrachlorophthalic Anhydride in Dyes and Pigments" specifies the method for determining the content of this substance, applicable to the testing of various dye and pigment products. The principle involves extracting the sample with methanol, followed by centrifugation, separation, and detection using high-performance liquid chromatography (equipped with a C18 column and an ultraviolet detector), with quantification performed by the external standard method. The detection requires instruments such as an ultrasonic generator, centrifuge, and analytical balance, providing precise technical support for product safety and quality control.

    This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
    Status Active
    CCS G55 ICS 87.060.10;71.100.01
    Release Date 2009-06-02 00:00:00 Implementation Date 2010-02-01 00:00:00

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    Extended reading
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