2922.21—Aminohydroxynaphthalenesulfonic acids and their salts
General duty rate
Free – 6.5%
Across 4 10-digit lines; pick a line below for the exact rate
Coverage on this page
Up one level: 2922 — Oxygen-function amino-compounds: (heading)
Plain-English explanation
HTS 2922.21 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Aminohydroxynaphthalenesulfonic acids and their salts. It sits in Chapter 29: Organic chemicals, Section VI: Products of the Chemical or Allied Industries and rolls up 4 10-digit statistical lines, with general duty rates ranging from Free to 6.5%. No Chapter 99 tariff modifications or AD/CVD orders currently flag any line under this subheading in Tandom's catalog.
10-digit lines under 2922.21(4)
Pick a line to view full rate detail and compute landed duty
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 salts5.8%2922.21.25.001-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium saltFree2922.21.40.00Products described in additional U.S. note 3 to section VI6.5%2922.21.50.00Other6.5%Frequently asked questions
What does HTS 2922.21 cover?
HTS 2922.21 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Aminohydroxynaphthalenesulfonic acids and their salts. It belongs to Chapter 29 and rolls up 4 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 2922.21?
General (Column 1) duty rates for the 10-digit lines under HTS 2922.21 range from Free to 6.5%. The exact rate depends on the specific 10-digit statistical line — pick a line below to see its full rate detail.
How do I find the right 10-digit line under HTS 2922.21?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 2922.21 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Are there AD/CVD orders affecting HTS 2922.21?
Learn more
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