Iron Naphthenate Catalyst for Olefin Polymerization from Canada
Iron naphthenate functions as a single-site catalyst precursor in late-transition metal olefin polymerization for polyethylene production. HTS 3824.99.7550 covers other naphthenic salts in petrochemical catalysis. Enables branched polymer architectures.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Air-sensitive packaging; inert atmosphere certs for activity retention
• Not 3815—specific olefin catalysts stay chemical preparations
• Patent status affects distribution; DEA if dual-use