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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as aniline derivative
Customs may interpret as substituted aniline rather than diphenylamine if N-substitution pattern differs.
If as chemical intermediate preparation
Prepared intermediates for dye synthesis often fall under residual chemical preparations.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Maintain drum labeling with batch purity certificates (>98%) for CBP examination
• Pre-clear quota availability through licensed customs broker specializing in chemicals
• Avoid seasonal import peaks when quotas near exhaustion
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.
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.
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.
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.