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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing sulfonated or halogenated derivatives
Sulfonated/nitrated aromatic polyamines shift to later numerical headings per Chapter 29 notes on derivatives.
If formulated as synthetic dye intermediate for retail
Products put up for retail sale as coloring matter exclude from Chapter 29 per exclusion note (g).
If imported as mixture with >2% impurities
Mixtures not qualifying as chemically defined compounds fall under chemical preparations in Chapter 38.
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Import Tips & Compliance
• Provide Certificate of Analysis (CoA) confirming chemical purity and identity to avoid misclassification as mixtures
• Ensure SDS includes GHS hazard labeling for toxic aromatic amines; declare as hazardous material if shipped in bulk
• Verify no added solvents beyond transport allowances per Chapter 29 note (e), or risk reclassification
Related Products under HTS 2921.51.50.00
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.
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.