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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other aromatic monoamine derivatives
May classify under broader 2921.49 if not specifically diphenylamine-based per heading structure.
If industrial finishing preparations containing it
When formulated into composite finishing agents, moves to Chapter 38.
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Import Tips & Compliance
• Provide NMR or GC-MS spectra verifying substitution pattern and purity
• Note thermal stability data for proper storage and transport conditions
• Avoid packaging that suggests retail preparation (heading 3824)
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.
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.
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.