1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid
1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid is a separate chemically defined organic compound with amino, hydroxy, and sulfonic acid groups on a naphthalene ring. It is a diazo coupling component used in the synthesis of acid dyes, falling under tariff item 2922.21.00 as an aminohydroxynaphthalenesulphonic acid.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the compound has more than one kind of oxygen function (e.g., additional ether or ester groups)
Tariff item 2922.29.00 covers other amino-naphthols and amino-phenols with more than one oxygen function.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the product is a separate chemically defined compound; impurities are allowed but must not alter its identity
• Declare the correct 8-digit tariff item 2922.21.00 and provide a technical data sheet to support classification
• Check if the product requires a permit under the Chemicals Management Plan (CMP) before import
Related Products under Tariff item 2922.21.00
4-Amino-3-hydroxy-1-naphthalenesulfonic acid
4-Amino-3-hydroxy-1-naphthalenesulfonic acid is a chemically defined aminohydroxynaphthalenesulphonic acid with amino, hydroxy, and sulfonic groups. It is used as a building block for direct and metal complex dyes, and falls under tariff item 2922.21.00.
6-Amino-1-naphthol-3-sulfonic acid (J Acid)
6-Amino-1-naphthol-3-sulfonic acid (J Acid) is an aminohydroxynaphthalenesulphonic acid used as an intermediate for direct and reactive dyes. It is a separate chemically defined compound, falling under tariff item 2922.21.00.
8-Amino-1-naphthol-5-sulfonic acid (Schaeffer's acid)
8-Amino-1-naphthol-5-sulfonic acid (Schaeffer's acid) is an aminohydroxynaphthalenesulphonic acid used as a dye intermediate for acid wool and reactive dyes. It is a separate chemically defined compound, classified under tariff item 2922.21.00.
CAS 117-94-2 1-Amino-8-Naphthol-4,6-Disulfonic Acid Monosodium Salt
CAS 117-94-2 is the monosodium salt of 1-amino-8-hydroxy-4,6-naphthalenedisulfonic acid, a separate chemically defined compound. It is an aminohydroxynaphthalenesulphonic acid salt, classified under tariff item 2922.21.00.
Chicago Acid (4-Amino-5-hydroxy-1,3-naphthalenedisulfonic acid)
Chicago Acid (4-amino-5-hydroxy-1,3-naphthalenedisulfonic acid) is a separate chemically defined compound with amino, hydroxy, and two sulfonic acid groups. It is an intermediate for reactive dyes and azo pigments, classified under tariff item 2922.21.00.
Chicago Acid Sodium Salt
Chicago Acid Sodium Salt is the sodium salt of 4-amino-5-hydroxy-1,3-naphthalenedisulfonic acid. As a salt of an aminohydroxynaphthalenesulphonic acid, it is classified under tariff item 2922.21.00, consistent with chapter note 5(C)(1) which classifies inorganic salts with the organic compound.