p-Phenylenediamine Sulfate
p-Phenylenediamine sulfate is the salt of p-phenylenediamine, a key ingredient in oxidative hair dyes and rubber antioxidants. Classified under HTS 2921.51.5000 as an 'other' salt of phenylenediamine derivatives, per Chapter 29 note on classifying organic salts with the parent amine.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If put up in retail packings for hair dye use
Preparations for shampoo/shaving use exclude from Chapter 29 per Section VI notes.
If specifically o-,m-,p-phenylenediamine base without salt
Pure bases have specific subheadings before 'other' salts.
If diluted solution for safety transport exceeding Chapter limits
Solutions not solely for transport/safety shift to mixtures in 3824.
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Import Tips & Compliance
• Include salt formation details in import docs; customs may require proof it's derived from listed phenylenediamines
• Comply with TSCA registration for industrial chemicals; declare CAS 624-46-4 accurately
• Watch for anti-dumping duties on hair dye chemicals from certain origins
Related Products under HTS 2921.51.50.00
o-Phenylenediamine
o-Phenylenediamine is a chemically defined aromatic polyamine with the formula C6H4(NH2)2, used primarily as an intermediate in the production of dyes, pigments, and pharmaceuticals. It falls under HTS 2921.51.5000 as an 'other' derivative of o-phenylenediamine, meeting Chapter 29's requirement for separate chemically defined organic compounds with amine functions.
4-Amino-N-phenylaniline (PAD)
4-Amino-N-phenylaniline, also known as PAD, is a derivative of p-phenylenediamine used in dye manufacturing and polymer production. It qualifies under HTS 2921.51.5000 as an 'other' aromatic polyamine derivative, being a chemically defined compound in this heading.
2,4-Diaminotoluene (2,4-TDA)
2,4-Diaminotoluene is a diaminotoluene isomer used in polyurethane elastomers, dyes, and hair colorants. It is classified in HTS 2921.51.5000 as an 'other' derivative of diaminotoluenes, fitting Chapter 29's scope for aromatic amine-function compounds.
p-Phenylenediamine Dihydrochloride
p-Phenylenediamine dihydrochloride is a water-soluble salt form used in analytical chemistry and dye synthesis. Under HTS 2921.51.5000 as an 'other' salt thereof, per Chapter 29 classification rules for organic salts following the parent amine heading.
N,N'-Diphenyl-p-phenylenediamine (DPPD)
DPPD is a substituted p-phenylenediamine derivative serving as an antiozonant in tire rubber compounds. It falls under HTS 2921.51.5000 as an 'other' aromatic polyamine derivative, being chemically defined per Chapter 29 criteria.
2,5-Diaminotoluene Sulfate
2,5-Diaminotoluene sulfate is a salt used primarily in permanent hair coloring formulations. Classified in HTS 2921.51.5000 as an 'other' derivative salt of diaminotoluenes, compliant with Chapter 29 salt classification provisions.