4-Nitro-1H-pyrazole from Canada
4-Nitro-1H-pyrazole contains an unfused pyrazole ring with nitro group substitution at position 4, qualifying as a nitrogen-heterocyclic compound under heading 2933. Classified in 2933.19.90.00 as 'other' pyrazole derivative. Used in synthesis of explosives, pharmaceuticals, and energetic materials.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Obtain ATF import permit if ultimate use involves energetic materials or explosives precursors
• Nitro compounds require shock/heat stability testing documentation for transportation
• Avoid misclassification as 'nitroaromatic' under 2904 - pyrazole ring takes precedence