1,5-Naphthalene Diisocyanate from Canada
1,5-Naphthalene diisocyanate (CAS 3173-72-6) is a polycyclic aromatic diisocyanate used in high-performance polyurethane elastomers and coatings requiring thermal stability. It is specifically named in HTS 2929.10.2700 as a diisocyanate compound with other nitrogen function, fitting Chapter 29's organic compound definitions.
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
• Diisocyanates require specific DOT Hazard Class 6.1 labeling; 2
• Include end-use statement if for R&D vs commercial production; 3
• Stabilizer additions must not change classification per Chapter note (f)