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United States tariff lines under HS 2922.21

Last updated

Landed cost with 2922.21Classify a product

Key facts

HS subheading
2922.21
National lines
4
Tariff
United States
Chapter
29: Organic chemicals

Summary

The United States tariff splits HS 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: Aminohydroxynaphthalenesulphonic acids and their salts) into 4 national lines: 2922.21.10.00 (1-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), 2922.21.25.00 (1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt), 2922.21.40.00 (products described in additional U.S. note 3 to section VI) and 2922.21.50.00 (other). The general (MFN) duty differs by line: 5.8% on 2922.21.10.00, free on 2922.21.25.00, 6.5% on 2922.21.40.00 and 6.5% on 2922.21.50.00.

United States lines under 2922.21

The United States tariff splits HS 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: Aminohydroxynaphthalenesulphonic acids and their salts) into 4 national lines: 2922.21.10.00 (1-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), 2922.21.25.00 (1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt), 2922.21.40.00 (products described in additional U.S. note 3 to section VI) and 2922.21.50.00 (other).

The general (MFN) duty differs by line: 5.8% on 2922.21.10.00, free on 2922.21.25.00, 6.5% on 2922.21.40.00 and 6.5% on 2922.21.50.00.

  • 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 saltsDuty: 5.8%
  • 2922.21.25.001-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium saltDuty: Free
  • 2922.21.40.00Products described in additional U.S. note 3 to section VIDuty: 6.5%
  • 2922.21.50.00OtherDuty: 6.5%

In other countries

No other national tariff on border.bot has live lines under 2922.21 yet.

The Harmonized System text for 2922.21

Frequently asked questions

How many national tariff lines does the United States tariff have under HS 2922.21?

The United States tariff splits HS 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: Aminohydroxynaphthalenesulphonic acids and their salts) into 4 national lines: 2922.21.10.00 (1-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), 2922.21.25.00 (1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt), 2922.21.40.00 (products described in additional U.S. note 3 to section VI) and 2922.21.50.00 (other).

What is the duty on HS 2922.21 in the United States?

The general (MFN) duty differs by line: 5.8% on 2922.21.10.00, free on 2922.21.25.00, 6.5% on 2922.21.40.00 and 6.5% on 2922.21.50.00.

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.

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