Research-Grade Isoprene (98% purity) from China
Laboratory reagent grade isoprene packaged in 100g glass ampoules for chemical synthesis research. Meets Chapter 29(a) definition of separate chemically defined compound with controlled impurities. Falls specifically under 2901.24.50.00 as 'other' isoprene form.
Duty Rate — China → United States
35%
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
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
• Include GC-MS analysis certificate verifying isoprene ≥98% and impurity profile for customs chemical verification
• Small package exemption may apply for lab quantities <1L but still requires UN2357 proper shipping name
• Avoid misclassification as Chapter 38 reagent preparation; remains Chapter 29 due to chemical purity dominance