United States tariff line 2922.21.25.00: 1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt
Last updated
Key facts
- Tariff line
- 2922.21.25.00
- Covers
- Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof, aminohydroxynaphthalenesulfonic acids and their salts, 1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt
- Duty (MFN)
- Free
- Additional duties
- None recorded
- Restrictions
- None recorded
- Tariff
- United States
- HS subheading
- 2922.21
Summary
In the United States tariff, line 2922.21.25.00 covers amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof, aminohydroxynaphthalenesulfonic acids and their salts, 1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2922.21 in heading 29.22 (chapter 29).
What this line covers
In the United States tariff, line 2922.21.25.00 covers amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof, aminohydroxynaphthalenesulfonic acids and their salts, 1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt.
Its legal text is “1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt”, read under “Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof” and “Aminohydroxynaphthalenesulfonic acids and their salts”.
How it is structured
It falls under HS subheading 2922.21 in heading 29.22 (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 29.22
- Oxygen-function amino-compounds
- Subheading 2922.21
- Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof
- Within the subheading
- Aminohydroxynaphthalenesulfonic acids and their salts
- Line 2922.21.25.00
- 1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt
Duty
Goods under this line enter free of general (MFN) duty.
Other lines under 2922.21
- 2922.21.10.001-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid; 4-Amino-5-hydroxy-1,3-naphthalenedisulfonic acid (Chicago acid); 4-Amino-5-hydroxy-1,3-naphthalenedisulfonic acid, potassium salt; 4-Amino-5-hydroxy-1,3-naphthalenedisulfonic acid, sodium salt; 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid, monosodium salt (H acid, monosodium salt); 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid, potassium salt (H acid, monopotassium salt); 4-Amino-3-hydroxy-1-naphthalenesulfonic acid; 6-Amino-1-naphthol-3-sulfonic acid and its salts; and 8-Amino-1-naphthol-5-sulfonic acid and its salts
- 2922.21.40.00Products described in additional U.S. note 3 to section VI
- 2922.21.50.00Other
In other countries
No other national tariff on border.bot has live lines under 2922.21 yet.
Frequently asked questions
What does tariff line 2922.21.25.00 cover in the United States tariff?
In the United States tariff, line 2922.21.25.00 covers amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof, aminohydroxynaphthalenesulfonic acids and their salts, 1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt.
What is the general (MFN) duty on 2922.21.25.00 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: