Octylated Diphenylamine
Octylated diphenylamine consists of mono- and di-octyl substituted derivatives used as antioxidants in lubricating oils and rubber products. It qualifies for HTS 2921.44.2000 as a diphenylamine derivative specified in additional U.S. note 3 to section VI for import quota management. The alkyl substitution enhances solubility and performance in petroleum applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for use in lubricating oil additives
Antioxidants specifically prepared for addition to lubricants are classified in heading 3811, regardless of chemical purity.
If considered aromatic monoamine derivative not specifically diphenylamine-based
Alkyl substitution may lead customs to classify under general aromatic amine derivatives if structural analysis differs from core diphenylamine.
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Import Tips & Compliance
• Submit import license applications early due to annual quota limits; track via USITC dataweb
• Include GC-MS analysis confirming octyl content >95% to prevent purity disputes
• Pitfall: bulk shipments without proper segregation risk contamination and reclassification
Related Products under HTS 2921.44.20.00
N-Phenyl-1-Naphthylamine (Neozone D)
N-Phenyl-1-naphthylamine is an aromatic amine derivative of diphenylamine used primarily as an antioxidant and stabilizer in rubber and tire production. It falls under HTS 2921.44.2000 as a derivative of diphenylamine specifically listed in additional U.S. note 3 to section VI for chemical products with controlled import volumes. This compound prevents oxidative degradation in polymers during manufacturing.
p-Isopropoxydiphenylamine (UOP 288)
p-Isopropoxydiphenylamine is a substituted diphenylamine derivative serving as a high-performance antioxidant for synthetic rubber and plastics. Classified under HTS 2921.44.2000 due to its inclusion in additional U.S. note 3 to section VI, which controls imports of certain rubber chemical intermediates. It provides thermal and oxidative stability in tire compounds.
4,4'-Di-alpha-cumyl Diphenylamine
This sterically hindered diphenylamine derivative acts as a premium antioxidant for natural and synthetic rubber, extending service life in tires and belts. HTS 2921.44.2000 applies due to its listing in additional U.S. note 3 to section VI, subjecting it to quantitative import restrictions. The cumyl groups provide superior heat aging resistance.
Monomethyldiphenylamine
Monomethyldiphenylamine is a methylated derivative used as an intermediate in dye manufacturing and rubber antioxidants. It falls under HTS 2921.44.2000 per additional U.S. note 3 to section VI, which regulates certain aromatic amine imports. The methyl substitution modifies reactivity for specific polymerization applications.
p,p'-Dicumyldiphenylamine
p,p'-Dicumyldiphenylamine serves as a high-temperature stable antioxidant for synthetic elastomers and petroleum products. Classified in HTS 2921.44.2000 because it's enumerated in additional U.S. note 3 to section VI for quota-controlled diphenylamine derivatives. Its bulky cumyl groups prevent radical chain reactions effectively.