p-Toluidine Sulfate
p-Toluidine sulfate is the sulfuric acid salt of p-toluidine, classified with the parent toluidine under HTS 2921.43.90.90 per Chapter Note 1(C)(2). Applied in hair dyes and analytical reagents.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If derived from aniline rather than toluidine
Aniline-base derivatives classified in separate subheading.
If inorganic sulfate predominates
Sulfate salts of organic bases classified with inorganic if not per Chapter Note 1(C).
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• ,Comply with cosmetic ingredient regulations (e.g
• EU Annex II bans); include toxicology data
• Avoid packaging implying retail dye use, which shifts to Chapter 32 or 33
Related Products under HTS 2921.43.90.90
p-Toluidine
p-Toluidine is an aromatic monoamine derivative with the chemical formula C7H9N, specifically 4-methylaniline, classified under HTS 2921.43.90.90 as a toluidine derivative. It is a key intermediate used in the production of dyes, pigments, and pharmaceuticals.
o-Toluidine Hydrochloride Salt
o-Toluidine hydrochloride is the salt form of 2-methylaniline (C7H9N·HCl), classified as a toluidine derivative salt under HTS 2921.43.90.90 per Chapter Note 1(C)(1). Used in synthesis of rubber antioxidants and azo dyes.
4-Amino-2-methylbenzoic Acid
This toluidine derivative features both amine-function and carboxylic acid group on a toluene base, classified under HTS 2921.43.90.90 as 'other' toluidines. Used as intermediate for pharmaceuticals and agrochemicals.
N-Ethyl-o-Toluidine
N-Ethyl-o-toluidine (C9H13N) is an N-substituted derivative of o-toluidine, remaining classified as toluidine derivative under HTS 2921.43.90.90. Primarily used in dye manufacturing and as a corrosion inhibitor.
2,5-Xylidine (2,5-Dimethylaniline)
2,5-Xylidine is a dimethyl-substituted toluidine analog (C8H11N), classified as 'other' toluidine derivative under HTS 2921.43.90.90. Essential for producing direct dyes and UV stabilizers.
Toluidine Blue O
Toluidine Blue O (C15H16ClN3S) is a thiazine dye derived from toluidine, but as a chemically defined compound primarily used as biological stain, classified under HTS 2921.43.90.90. Not excluded as retail coloring matter.