United States tariff line 2908.99.06.00: 4-Hydroxy-1-naphthalenesulfonic acid (1-Naphthol-4-sulfonic acid)
Last updated
Key facts
- Tariff line
- 2908.99.06.00
- Covers
- Derivatives containing only sulfo groups, their salts and esters, 4-Hydroxy-1-naphthalenesulfonic acid (1-Naphthol-4-sulfonic acid)
- Duty (MFN)
- Free
- Additional duties
- None recorded
- Restrictions
- None recorded
- Tariff
- United States
- HS subheading
- 2908.99
Summary
In the United States tariff, line 2908.99.06.00 covers derivatives containing only sulfo groups, their salts and esters, 4-Hydroxy-1-naphthalenesulfonic acid (1-Naphthol-4-sulfonic acid). Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2908.99 in heading 29.08 (chapter 29).
What this line covers
In the United States tariff, line 2908.99.06.00 covers derivatives containing only sulfo groups, their salts and esters, 4-Hydroxy-1-naphthalenesulfonic acid (1-Naphthol-4-sulfonic acid).
Its legal text is “4-Hydroxy-1-naphthalenesulfonic acid (1-Naphthol-4-sulfonic acid)”, read under “Other”, “Other” and “Derivatives containing only sulfo groups, their salts and esters”.
How it is structured
It falls under HS subheading 2908.99 in heading 29.08 (chapter 29). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.
- Chapter 29
- Organic chemicals
- Heading 29.08
- Halogenated, sulfonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols
- Subheading 2908.99
- Other
- Within the subheading
- Other
- Within the subheading
- Derivatives containing only sulfo groups, their salts and esters
- Line 2908.99.06.00
- 4-Hydroxy-1-naphthalenesulfonic acid (1-Naphthol-4-sulfonic acid)
Duty
Goods under this line enter free of general (MFN) duty.
Other lines under 2908.99
- 2908.99.03.002,5-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
- 2908.99.09.001,8-Dihydroxynaphthalene-3,6-disulfonic acid and its disodium salt
- 2908.99.12.00Products described in additional U.S. note 3 to section VI
- 2908.99.15.00Other
- 2908.99.20.00p-Nitrophenol
- 2908.99.25.00Other nitrophenols
- 2908.99.33.00Dinitro-o-cresols (other than 4,6-dinitro-o-cresol) and 4-nitro-m-cresol
- 2908.99.40.00Dinitrobutylphenol and its salts
- 2908.99.80.00Products described in additional U.S. note 3 to section VI
- 2908.99.90.00Other
In other countries
No other national tariff on border.bot has live lines under 2908.99 yet.
Frequently asked questions
What does tariff line 2908.99.06.00 cover in the United States tariff?
In the United States tariff, line 2908.99.06.00 covers derivatives containing only sulfo groups, their salts and esters, 4-Hydroxy-1-naphthalenesulfonic acid (1-Naphthol-4-sulfonic acid).
What is the general (MFN) duty on 2908.99.06.00 in the United States?
Goods under this line enter free of general (MFN) duty.
Sources and updates
The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
This page was last updated on 9 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.
Official source files: