Homopiperidine Stabilized with BHT from Japan
Homopiperidine (hexamethyleneimine) stabilized with butylated hydroxytoluene (BHT) to prevent oxidation during storage and transport. Falls under HTS 2933.99.89.00 per Chapter 29 note (f) allowing stabilizers necessary for preservation without changing specific use. Used in fine chemical manufacturing.
Duty Rate — Japan → United States
27.5%
Rate breakdown
9903.04.6215%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document stabilizer ≤0.1% by weight with HPLC certificate to qualify under Chapter note (f); excess shifts to mixtures
• Use Type 1A1 steel drums with PTFE lining; inspect for corrosion as common failure point with basic heterocycles
• Declare exact stabilizer composition on commercial invoice; FDA may require for pharma intermediate pathway