# HTS 9902.03.84: 4,4'-Diamino-2,2'-stilbenedisulfonic acid (CAS No. 81-11-8) (provided for in subheading 2921.59.20)

> Plain-language tariff reference from the USITC Harmonized Tariff Schedule on [PlainTariff](https://plaintariff.com/).

## Duty rates

- **General (MFN) rate:** 1.5%
- **Special / FTA rate:** No change
- **Column 2 rate:** No change
- **Corpus rank:** #6564 of 6827 among dutiable tariff lines
- **Percentile among ad-valorem lines:** 51st of 13,544 rated lines

## Classification path

- **Section XXII:** [Special Classification Provisions](https://plaintariff.com/section/xxii-special-classification-provisions)
- **HTS code:** 9902.03.84

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*Source: U.S. International Trade Commission Harmonized Tariff Schedule. HTML canonical: https://plaintariff.com/heading/99020384-44-diamino-22-stilbenedisulfonic-acid-cas-no-81-11-8*