Copper Naphthenate Wood Preservative from Mexico
Copper naphthenate is a water-insoluble salt of naphthenic acids used as a fungicide and insecticide for pressure-treated wood products like decks and fences. It falls under HTS 3824.99.75 as it is specifically a water-insoluble salt of naphthenic acids prepared for industrial preservative applications. This classification covers such metallic naphthenates not elsewhere specified in Chapter 38.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify the water-insolubility of the naphthenate salt through lab testing, as soluble forms may classify elsewhere
• Include Safety Data Sheets (SDS) and EPA registration if used as a pesticide to ensure compliance with FIFRA
• Avoid misclassification as paint additives by specifying end-use as industrial wood preservative