Copper Naphthenate Wood Preservative from Canada
Copper naphthenate is a water-insoluble salt of naphthenic acids used as an industrial wood preservative to protect against fungal decay and insect damage. It falls under HTS 3824.99.7550 as 'other' water-insoluble salts and esters of naphthenic acids not elsewhere specified. This formulation is typically applied via brushing or pressure treatment in construction and marine applications.
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
• Verify the naphthenic acid content exceeds 50% to qualify under this subheading; provide supplier certificates of analysis
• Ensure EPA registration if marketed as pesticide; include MSDS and proper hazmat labeling for import declaration