Diphenylamine 2,2'-Dicarboxylic Acid
Diphenylamine 2,2'-dicarboxylic acid features carboxylic acid groups ortho to the nitrogen linkage, classified as an 'other' derivative under HTS 2921.44.70.00. Used in dye intermediates and pharmaceutical synthesis.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified by carboxylic acid function
Dicarboxylic acid derivatives may classify under heading 2918 if acid function predominates.
If when used as synthetic dye coupler
Diazo coupler applications shift to Chapter 32 per chapter exclusion note (g).
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Import Tips & Compliance
• Include batch certificates showing absence of metal impurities per chapter coordination compound notes
• Specify pKa values for proper hazard classification during import
• Document as intermediate to avoid pharmaceutical preparation classification (Chapter 30)
Related Products under HTS 2921.44.70.00
N-Phenyl-1-Naphthylamine
N-Phenyl-1-naphthylamine is a derivative of diphenylamine featuring a naphthyl group substitution, classified under HTS 2921.44.70.00 as an 'other' aromatic monoamine derivative. It is primarily used as an antioxidant in rubber production and lubricant formulations.
p-Isopropoxydiphenylamine
p-Isopropoxydiphenylamine is an ether derivative of diphenylamine with an isopropoxy substituent on one aromatic ring, falling under HTS 2921.44.70.00 as 'other' diphenylamine derivatives. It serves as a stabilizer in polymer processing.
Octylated Diphenylamine
Octylated diphenylamine is an alkylated derivative where octyl chains are substituted onto the diphenylamine structure, classified in HTS 2921.44.70.00 as 'other' derivatives. Commonly used as an antioxidant in petroleum products and lubricants.
4,4'-Di-tert-Butyldiphenylamine
This symmetrical diphenylamine derivative features tert-butyl groups at the 4 and 4' positions, qualifying under HTS 2921.44.70.00 as 'other' salts and derivatives. It functions as a high-temperature antioxidant in synthetic lubricants.
Monobenzyl Diphenylamine
Monobenzyl diphenylamine has a benzyl group attached to one phenyl ring of the diphenylamine core, falling under HTS 2921.44.70.00 'other' category. Applied as a corrosion inhibitor in industrial fluids.
Phenyl-alpha-Naphthylamine (PANA)
Phenyl-alpha-naphthylamine (PANA) combines phenylamine with alpha-naphthyl substitution, classified under HTS 2921.44.70.00 as other diphenylamine derivatives. Essential antioxidant for tire rubber compounds.