Didecyldimethylammonium Chloride (DDAC) from China
DDAC is a cationic surfactant widely used as a disinfectant and biocide in industrial cleaning formulations. It qualifies under heading 3402 by producing stable emulsions and lowering water surface tension per the technical test. Falls in 3402.41.90.00 as other cationic agents beyond those specified.
Duty Rate — China → United States
39%
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
• Include EPA registration if used as disinfectant to comply with pesticide import rules
• Document concentration and test results proving organic surface-active agent status
• Label clearly as cationic to prevent reclassification into anionic or nonionic categories