Dimer acid from China
Dimer acids are oligomeric cyclanic polycarboxylic acids produced by clay-catalyzed dimerization of unsaturated fatty acids. Despite polymer nature, classified as chemically defined cyclanic polycarboxylic acids under HTS 2917.20.00.00 when meeting purity standards. Used in polyamide hot-melt adhesives.
Duty Rate — China → United States
39.2%
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
• Submit GPC analysis showing number-average MW <1000 Da to qualify as Chapter 29 compound
• Provide acid value and saponification value test results confirming polycarboxylic nature
• Distinguish from trimer acids which may require different statistical reporting