2-Furoic Acid from Japan
2-Furoic acid contains a carboxylic acid function attached to unfused furan ring with oxygen hetero-atom only, used in pharmaceuticals. HTS 2932.19.51.00 as furan 'other' per numerical classification rule. Acid function subordinate to ring structure.
Duty Rate — Japan → United States
3.7%
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
Import Tips
• Include pKa and melting point data (133°C) to confirm identity vs isomers
• Non-hazardous solid but dust explosion risk; specify UN 3261 if >25kg packages
• Pharma vs industrial grade requires different FDA import alerts monitoring