Isobutylbenzene from Mexico
Isobutylbenzene (C6H5CH2CH(CH3)2) used in fine chemical synthesis. Classifies as HTS 2902.90.30.50 'other' alkylbenzene with branched C4 chain. Excludes Chapter 27 crude oils per chapter notes.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Branching confirmed by mass spectrometry; UN 1918 packaging standards; avoid confusion with n-butylbenzene isomers