Bayer's Acid Salt (1-Naphthylamine-4-sulfonic Acid Sodium Salt)
Bayer's Acid Salt (1-Naphthylamine-4-sulfonic Acid Sodium Salt) is a chemically defined organic compound used as an intermediate in the production of direct and reactive dyes. Its aminohydroxynaphthalenesulfonic acid structure places it under tariff item 2922.21.00, which covers such acids and their salts. The sodium salt form is included as a salt of the 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 is not a naphthalenesulphonic acid derivative
Other amino-naphthols and amino-phenols with oxygen functions, not specifically covered by 2922.21.
If the compound contains more than one kind of oxygen function
Amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function, which are excluded from 2922.21.
If imported as a synthetic organic colouring matter
Synthetic organic colouring matter and preparations based thereon, as per Section VI Note 2.
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Import Tips & Compliance
• Ensure the product is a separate chemically defined compound with no added substances that render it suitable for a specific use, as per Chapter 29 Note 1
• Declare the correct 8-digit tariff item 2922.21.00 and be prepared to provide a certificate of analysis to confirm its chemical identity
• Check if the product qualifies for duty-free treatment under a free trade agreement by providing a valid certificate of origin
Related Products under Tariff item 2922.21.00
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.
1-Naphthylamine-4-sulfonic Acid (Naphthionic Acid)
Naphthionic Acid (1-Naphthylamine-4-sulfonic Acid) is an aminohydroxynaphthalenesulfonic acid derivative used in azo dye synthesis and pharmaceutical intermediates. Its structure includes amino and sulfonic acid groups on naphthalene with oxygen-function, placing it under tariff item 2922.21.00. The compound is a separate chemically defined organic compound per Chapter 29 Note 1(a).
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.