Homopiperidine Stabilized with BHT from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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