TMQDiaryl Amine Antioxidant Mixture from Japan
Polymerized 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) blended with N,N'-diaryl-p-phenylenediamines for synergistic rubber protection in conveyor belts and hoses. Offers heat aging resistance and atmospheric degradation prevention. HTS 3812.39.2000 classification based on diaryl-p-phenylenediamine mixture component.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Submit lab analysis confirming diaryl content over other stabilizers for CBP review
• Register under TSCA for new chemical introductions
• Prevent blending errors leading to 3812.39.9000 classification