Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2922.21.10.00Tariff line
Classification path
Oxygen-function amino-compounds
2922
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-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
2922.21.10.00
Rates of duty
General rate (Column 1)5.8%
SpecialFree (A+, AU, BH, CL, CO, D, E, IL, JO, KR, L, MA, OM, P, PA, PE, S, SG)
Column 215.4¢/kg + 39%
Unitkg
Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, L, MA, OM, P, PA, PE, S, SG)
Printed page 1506
Measure flags
for origin CN, entry date 2026-10-26 · base rate 5.8%
- Section 301 forced-labor tariff (12.5%)9903.05.31Applies+12.5%China: Column 1 rate + 12.5% additional
- China 301 List 3 (9903.88.03)9903.88.03Applies+25%8-digit subheading 2922.21.10 is on L3
- PGAEPA EP7
Confirmed total 43.3% · max 43.3%Full duty breakdown →