4-Aminoazobenzene-2,4-disulfonic Acid Monosodium Salt (Dye Intermediate) from China
Pure monosodium salt form of the disulfonic acid derivative of 4-aminoazobenzene, a diazo compound used in azo dye manufacturing. Classified under HTS 2927.00.03.00 for its specific chemical structure as a named separate organic compound per Chapter 29 note (a). Supplied as technical grade powder for industrial synthesis.
Duty Rate — China → United States
35%
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
• Include CoA (Certificate of Analysis) specifying CAS number and structure confirmation via NMR/spectroscopy
• Declare exact sodium content and water of hydration to avoid disputes over 'monosodium' specification