4,4'-Diamino-2,2'-stilbenedisulfonic acid (CAS No. 81-11-8) (provided for in subheading 2921.59.20)

Duty under this heading1.5%

As of Revision 22 (2026), effective Oct 30, 2026Source: USITC HTS ↗

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Tariff data: USITC Harmonized Tariff Schedule and the Federal Register, U.S. government works in the public domain. Code MIT licensed. Not affiliated with any government agency; not legal or customs advice.

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