3-Carboxy-1,4-sulfophenylpyrazol-5-one from China
This sulfonic/carboxy substituted pyrazolone is named in HTS 2933.19.08.00 as aromatic pyrazole compound. Unfused pyrazole ring with nitrogen hetero-atoms fits Chapter 29. Essential intermediate for acid dyes and pharmaceuticals.
Duty Rate — China → United States
43.3%
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
• Water-soluble sulfonic acids require special waste handling manifests
• pH adjustment documentation needed for stability during transport
• Verify dual acid functions don't trigger Chapter 28 inorganic classification