Crotonyl Chloride from China
Crotonyl chloride (2-butenoyl chloride) combines acid chloride functionality with α,β-unsaturation and chlorine, but classified by halide nature. HTS 2903.29.00.00 per note 5(E) classifying acid halides with corresponding acids. Reactive intermediate for pharmaceuticals and polymer synthesis.
Duty Rate — China → United States
43%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Reference corresponding crotonic acid (2916.20) classification per note 5(E) in documentation
• Handle as UN 2502 Corrosive liquid due to high reactivity with moisture and metals
• Confirm no alcoholate formation that would trigger note 5(D) alcoholate classification