Detection parameters for phthalic anhydride
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Currently, the testing parameters for phthalic anhydride involve only its acid value, moisture content, color, etc., but there is little consideration given to the detection of specific impurities. How can impurities in phthalic anhydride be detected? I would appreciate some guidance from experts.
Does \"upstairs\" refer to the phthalic anhydride product? Generally, it is mainly the contents of maleic anhydride, citral anhydride, benzoic acid, phthalein, and benzene anhydride; chromatographic analysis can be used for this purpose. It’s not that difficult.
Does \"upstairs\" refer to the phthalic anhydride product? Generally, it is mainly the contents of maleic anhydride, citral anhydride, benzoic acid, phthalein, and benzene anhydride; chromatographic analysis can be used for this purpose. It’s not that difficult.
Stopping by to learn a bit! :):):)
Impurities in phthalic anhydride such as phthalein, maleic anhydride, citral anhydride, and benzoic acid can have their contents detected using gas chromatography