Copper Naphthenate Wood Preservative from China
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 — China → United States
38.7%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
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