N-Butyl Isocyanate 98% Stabilized from Canada
N-Butyl isocyanate stabilized with 0.05% dibutyltin dilaurate (CAS 111-36-4) prevents polymerization during storage and transport. Remains classified under HTS 2929.10.2700 per Chapter 29 note (f) as the isocyanate retains its chemical identity with necessary stabilizer addition.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• 1
• Declare stabilizer composition and percentage on commercial invoice; 2
• Stabilizer must be <1% to maintain principal compound status; 3
• Include accelerated stability test data