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Classifying diammonium phosphate: why a chemical compound lands in Chapter 31

October 2025 examClassificationQuestion 31 of 80

Of the four choices below, which is the best CLASSIFICATION of diammonium hydrogenorthophosphate?

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CBP answer key: Answer D · Chapter 31, Note 5 HTSUS; 3105.30.0000 HTSUSSource: CBP past exams ↗