# HTS 2908.99.03.00: 2,5-Dihydroxybenzenesulfonic acid, potassium salt; 3,6-Dihydroxy-2,7-naphthalenedisulfonic acid; 3,6-Dihydroxy-2,7-naphthalenedisulfonic acid, sodium salt; 4-Hydroxy-1-naphthalenesulfonic acid, sodium salt; 1-Naphthol-3,6-disulfonic acid; and 2-Naphthol-3,6-disulfonic acid and its salts

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

## Duty rates

- **General (MFN) rate:** 5.5%
- **Special / FTA rate:** Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,L,MA,OM,P,PA,PE,S,SG)
- **Column 2 rate:** 15.4¢/kg + 45.5%
- **Corpus rank:** #3446 of 6827 among dutiable tariff lines
- **Percentile among ad-valorem lines:** 73rd of 13,544 rated lines

## Classification path

- **Section VI:** [Products of the Chemical or Allied Industries](https://plaintariff.com/section/vi-products-of-the-chemical-or-allied-industries)
- **Chapter 29:** [Organic chemicals](https://plaintariff.com/chapter/chapter-29-organic-chemicals)
- **HTS code:** 2908.99.03.00

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- [Tariff calculator](https://plaintariff.com/tools/tariff-calculator)
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- [Methodology & sources](https://plaintariff.com/methodology)

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*Source: U.S. International Trade Commission Harmonized Tariff Schedule. HTML canonical: https://plaintariff.com/heading/2908990300-25-dihydroxybenzenesulfonic-acid-potassium-salt-36-dihyd*