2928.00.50.00/1,1-Diphenyl-2-picrylhydrazyl/Canada

1,1-Diphenyl-2-picrylhydrazyl from Canada

1,1-Diphenyl-2-picrylhydrazyl (DPPH) is a stable free radical used as an antioxidant assay standard in research. Falls under HTS 2928.00.50.00 as 'other' hydrazine derivative, being a chemically defined organic compound with hydrazine core despite extensive substitution. Its purple crystalline form is characteristic for spectroscopic applications.

Duty Rate — Canada → United States

6.5%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter

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Import Tips

• Light-sensitive; use amber packaging for shipments; provide radical assay certificate (98%+ purity); DEA-exempt for research quantities