Sulfanilic Acid
Sulfanilic Acid (4-aminobenzenesulfonic acid) is a white crystalline powder used as an intermediate in dye and pharmaceutical manufacturing. It is a chemically defined aromatic monoamine with a sulfo group, classified under tariff item 2921.42.00.
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 product is used directly as a dye or colouring matter
Synthetic organic colouring matter falls under heading 32.04.
If the product contains impurities or additives that exclude it from Chapter 29
Products not meeting Chapter 29 purity criteria may be classified as chemical products.
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
• Classify the product based on its chemical identity as 4-aminobenzenesulfonic acid and ensure purity meets the declared grade
• Keep a technical data sheet available for CBSA verification
• If the product is diluted in a solvent, confirm the solvent is solely for safety or transport per Chapter 29 note (e)
Related Products under Tariff item 2921.42.00
2,3,4-Trifluoroaniline
2,3,4-Trifluoroaniline is a polyfluorinated aniline derivative used in agrochemical and pharmaceutical synthesis. It is a chemically defined aromatic monoamine and is classified under tariff item 2921.42.00 as an aniline derivative.
2,4,5-Trichloroaniline
2,4,5-Trichloroaniline is a chemically defined aromatic monoamine derivative with three chlorine atoms on the aniline ring. It is an aniline derivative and falls under tariff item 2921.42.00.
2,4,5-Trichloroaniline (98% Pure Technical Grade)
Technical grade 2,4,5-trichloroaniline at 98% purity is a separate chemically defined compound per Chapter 29 note (a). It is classified under tariff item 2921.42.00 as an aniline derivative.
2,4,5-Trichloroaniline Hydrochloride Salt
2,4,5-Trichloroaniline hydrochloride salt is an inorganic salt of an amine-function compound, classified with the organic compound per Chapter 29 note 5(C)(1). It falls under tariff item 2921.42.00.
2,4-Dichloroaniline
2,4-Dichloroaniline is a halogenated aromatic monoamine with two chlorine atoms on the aniline ring. It is an aniline derivative used in herbicide and dye manufacturing, falling under tariff item 2921.42.00.
2,5-Dichloroaniline
2,5-Dichloroaniline is a dihalogenated aniline compound used as an intermediate in rubber antioxidants and pharmaceutical synthesis. As a chemically defined aromatic monoamine with halogen substituents, it falls under tariff item 2921.42.00 for aniline derivatives and their salts.