1H-Pyrazole-3-carboxylic Acid from Canada
1H-Pyrazole-3-carboxylic acid contains both unfused pyrazole ring and carboxylic acid function, classified under HTS 2933.19.90.00 with heterocyclic heading taking precedence. Used in pharmaceutical synthesis and agrochemical production.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• pH-sensitive - specify neutral packaging and include corrosion inhibitor if required
• Carboxylic acid derivatives need decarboxylation stability data for classification
• Confirm free acid vs. salt form - sodium salt may affect duty treatment