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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pure o-phenylenediamine or specific named base
Principal compounds have dedicated subheadings before 'other'.
If hydrocarbon derivative without full amine function
Reduced nitrogen-function compounds classify under earlier oxygen-function headings.
If mixed with dibutyl phthalate as rubber antioxidant
Formulations for specific rubber use shift to Chapter 38 preparations.
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Import Tips & Compliance
• Declare exact isomer ratio if mixed; pure 2,4-TDA stays here but blends may go to 3824
• Hazard Class 6.1 poison labeling mandatory; use UN 1707 proper shipping name
• Pre-register with EPA for TSCA if >10,000 lbs/year imported
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.
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.
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.