Monosodium 4-Aminoazobenzene-2,4-disulfonate from China
This is the monosodium salt of 4-aminoazobenzenedisulfonic acid, a chemically defined diazo compound with an azo (-N=N-) linkage and sulfonic acid groups. It falls under HTS 2927.00.03.00 as a specific azo-compound listed in the tariff schedule for separate chemically defined organic compounds. Primarily used as an intermediate in dye synthesis.
Duty Rate — China → United States
37.5%
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)
Import Tips
• Provide chemical analysis certificates confirming identity as 4-aminoazobenzenedisulfonic acid monosodium salt to match exact HTS specification
• Ensure packaging complies with UN regulations for hazardous chemicals (likely irritant due to sulfonic groups); include MSDS documentation
• Verify purity levels (>95%) as impurities may trigger reclassification under general azo-compound headings