2-Naphthalenethiol from China
2-Naphthalenethiol (C10H7SH) is a bicyclic aromatic thiol with sulfur directly linked to the naphthalene ring carbon. Falls under HTS 2930.90.2900 as 'Other' aromatic organo-sulfur compounds. Employed in materials science for self-assembled monolayers and as synthetic intermediate.
Duty Rate — China → United States
137.5%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• HPLC purity certificate essential; impurities >2% may disqualify as 'chemically defined' per chapter notes
• Light-sensitive; specify storage conditions in import documentation to prevent degradation claims
• Confirm polycyclic aromatic structure vs simpler aromatics in earlier 2930 subheadings