3,3'-Dichlorobenzidine Dihydrochloride
3,3'-Dichlorobenzidine dihydrochloride is a diamine salt classified under HTS 2921.59.80.10 as an aromatic polyamine derivative and its salt. It is primarily used as a key intermediate in the production of diaminobenzidine-based azo pigments and dyes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when formulated as synthetic azo pigment dispersion
Finished synthetic organic dyes and pigments fall under Chapter 32 rather than Chapter 29 chemical intermediates.
If imported as prepared chemical mixture or solution for dye production
Chemical preparations containing multiple compounds are classified in heading 3824, not as pure substances of Chapter 29.
If classified as other aromatic polyamine salt without specific dihydrochloride identification
General aromatic polyamine salts use broader 10-digit code; specific chemical naming determines 2921.59.80.10.
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Import Tips & Compliance
• Provide detailed chemical analysis certificates confirming purity and identity as 3,3'-Dichlorobenzidine dihydrochloride to match HTS 2921.59.80.10 specification
• Verify compliance with TSCA regulations and obtain EPA pre-manufacture notice if required for chemical import
• Avoid misclassification by ensuring product is imported as pure chemical substance, not pre-mixed dye formulation
Related Products under HTS 2921.59.80.10
3,3'-Dichlorobenzidine 2HCl Pharmaceutical Grade
Pharmaceutical-grade 3,3'-Dichlorobenzidine dihydrochloride meeting USP standards, specifically identified under HTS 2921.59.80.10. Used as synthetic intermediate for pharmaceutical research and hormone derivative production per Chapter 29 notes.
o-Dianisidine Dihydrochloride Equivalent (3,3'-Dichlorobenzidine 2HCl)
High-purity 3,3'-Dichlorobenzidine dihydrochloride used as o-dianisidine equivalent in pigment manufacturing, classified specifically under HTS 2921.59.80.10. Meets Chapter 29 requirements for chemically defined aromatic polyamine salts.
3,3'-Dichlorobenzidine Dihydrochloride 99% Technical Grade
Technical grade 3,3'-Dichlorobenzidine dihydrochloride at 99% purity for industrial dye synthesis, specifically enumerated under HTS 2921.59.80.10. Qualifies as separate chemically defined organic compound per Chapter 29 note 1(a).