Phenanthroline from Canada
1,10-Phenanthroline is a tricyclic aromatic heterocyclic compound famous for its metal chelation properties in analytical chemistry. Classified under HTS 2934.99.44.00 as other aromatic heterocycles. Widely used to form colored complexes with iron(II) for titration.
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
• Include usage declaration as analytical reagent to support classification
• Ensure packaging prevents moisture absorption which affects chelation properties
• CAS 66-71-7 documentation required for positive chemical identification