Sodium Salt of 4-Aminoazobenzene Disulfonate (CAS 20592-48-5) from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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