Technical Grade Urotropin 99% from China
99% pure technical grade urotropin for rubber vulcanization accelerator systems. HTS 2933.69.5000 classification due to specific chemical identity as hexamethylenetetramine with triazine ring.
Duty Rate — China → United States
43.8%
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
• Ash content <0.05% and iron <5ppm critical for rubber applications; test certificates required
• Avoid dust formation during handling; specify anti-dusting agent if added
• Confirm no melamine contamination (>20ppm) via HPLC analysis