High-Purity N-Cyclohexylthiophthalimide for Synthetic Rubber from Mexico
This high-purity grade of N-Cyclohexylthiophthalimide serves as a nitrosamine inhibitor and retarder in synthetic rubber compounding, particularly for automotive tires. As an aromatic organo-sulfur compound with sulfur directly bonded to carbon in the thiophthalimide structure, it complies with Chapter 29 definitions excluding sulfonated derivatives. Specific subheading 2930.90.24.00 covers this exact chemical entity.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include REACH-like compliance docs if from EU; label with CAS# 17796-82-6 for CBP verification
• Avoid pitfall: declaring under bulk rubber additives (4002) which applies only to polymers, not pure chemicals