2921.45.20.00/Laurent's Acid (5-Amino-1-naphthalenesulfonic acid)/China

Laurent's Acid (5-Amino-1-naphthalenesulfonic acid) from China

Laurent's acid is a sulfonated derivative of 1-naphthylamine, specifically 5-amino-1-naphthalenesulfonic acid, used primarily as an intermediate in dye synthesis. It falls under HTS 2921.45.20.00 as an aromatic monoamine derivative with sulfonic acid groups, matching the chapter's provisions for chemically defined organic compounds with nitrogen functions. The product is typically supplied as a white to light yellow powder for industrial chemical applications.

Duty Rate — China → United States

43.3%

Rate breakdown

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)

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Import Tips

• Provide detailed chemical analysis certificates confirming purity and identity as Laurent's acid to avoid misclassification under general aromatic amines

• Ensure SDS (Safety Data Sheets) comply with HAZMAT regulations since sulfonic acids are corrosive; declare proper UN numbers for transport

• Verify supplier COA matches the exact HTS description to prevent reclassification into higher-duty sulfonated compounds