Phenanthroline from Canada
1,10-Phenanthroline is a tridentate heterocyclic ligand forming colored complexes with metal ions, used in analytical chemistry. Falls under HTS 2934.99.90.01 as other heterocyclic nitrogen compounds.
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
• Specify chelation capacity in technical data sheet for lab reagent verification
• Use child-resistant packaging if >1% concentration per CPSC rules
• Test for heavy metal impurities which affect complex formation purity