Sodium Salt of 4-Aminoazobenzene Disulfonate (CAS 20592-48-5) from Canada
Commercially available as CAS 20592-48-5, this monosodium salt features the precise structure of 4-aminoazobenzenedisulfonic acid with one sodium cation. HTS 2927.00.03.00 explicitly names this compound as a diazo-/azo- compound within Chapter 29's scope for pure organic chemicals. Used in coupling reactions for disperse dye production.
Duty Rate — Canada → United States
10%
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
Import Tips
• Reference CAS 20592-48-5 in all import docs; customs may require it for verification against tariff description
• Test for heavy metals (<10 ppm) as impurities could trigger REACH-like import restrictions
• Avoid retail packaging; bulk industrial shipments align best with chemical intermediate classification