4-Aminophenol
4-Aminophenol is a key intermediate for pharmaceutical synthesis, photographic chemicals, and dye production, featuring both amino and hydroxyl groups on a benzene ring. Classified under HTS 2921.49.50.00 as an aromatic amine derivative. Meets Chapter 29 criteria for chemically defined amine-function compounds.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If emphasizing phenolic oxygen function over amine
If classified by oxygen-function (hydroxyl group), moves to Chapter 29 amino-oxygen compounds per note 4 oxygen function rules.
If as heterocyclic intermediate derivative
Certain ring-modified versions become heterocyclics under heading 2933 rather than simple aromatic amines.
If industrial phenol without amine declaration
If phenolic nature predominates without amine specification, may classify under phenolic alcohols.
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Import Tips & Compliance
• Include SDS with oxidation stabilizer details; ensure pharma-grade certificates for purity; check for anti-dumping duties on Chinese origins
Related Products under HTS 2921.49.50.00
p-Phenylenediamine
p-Phenylenediamine is an aromatic diamine used primarily as an intermediate in the production of dyes, rubber antioxidants, and hair dyes. It falls under HTS 2921.49.50.00 as an aromatic monoamine derivative with amine-function groups. This chemically defined organic compound meets Chapter 29 requirements for separate classification.
N-Phenyl-1-naphthylamine
N-Phenyl-1-naphthylamine serves as an antioxidant and stabilizer in rubber and lubricant formulations. This aromatic amine derivative is specifically covered under HTS 2921.49.50.00. Qualifies as a chemically defined compound per Chapter 29 note 1(a).
2,4-Diaminotoluene
2,4-Diaminotoluene is used in hair dyes, polyurethane elastomers, and as a photographic developer. Falls under HTS 2921.49.50.00 as an aromatic diamine derivative. Chemically defined per Chapter 29 requirements with dual amine functionality.
Diphenylamine
Diphenylamine functions as a pesticide stabilizer, rubber antioxidant, and solid rocket propellant stabilizer. Classified under HTS 2921.49.50.00 as a diarylamine derivative. Pure aromatic amine compound meeting Chapter 29 chemical definition standards.
Benzidine Dihydrochloride
Benzidine dihydrochloride serves as an intermediate for azo dyes and detection reagents despite carcinogen status. Falls under HTS 2921.49.50.00 as aromatic diamine salt. Chapter note 4(C)(1) directs salt classification with parent amine.
4-Nitroaniline
4-Nitroaniline is a fundamental dye intermediate and pharmaceutical precursor with both nitro and amino functionality. Specifically included under HTS 2921.49.50.00 per Chapter note 2 for nitrated derivatives. Chemically defined aromatic compound.