Determination of Hydrolysis Products of Diacid and Tetraacid Substances in 3,3′,4,4′-Benzophenonetetracarboxylic Dianhydride by Ultisil XB-C18 Chromatography Column.

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ColumnWelch Ultisi® XB-C18 (4.6×250 mm, 3 μm) two in series
Mobile PhaseAcetonitrile with 0.1% TFA
DetectionUV detector (254nm)
Column Temperature30℃
Flow Rate0.5 ml/min
Injection Volume20 μL
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