Meldrum's Acid from China
Meldrum's acid (2,2-dimethyl-1,3-dioxane-4,6-dione) is a cyclic diester used in organic synthesis, classified under HTS 2942.00.50.00 as 'other' organic compounds. This highly acidic beta-diketone equivalent features a six-membered heterocyclic ring.
Duty Rate — China → United States
41.2%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Hygroscopic; ship ≤20% RH with moisture content analysis (<0.5%)
• pKa 4.97 documentation and decarboxylation temperature (>140°C) data
• Distinguish from pharmaceutical intermediates under stricter FDA controls