TBBS Rubber Accelerator (N-tert-Butyl-2-benzothiazolesulfenamide) from China
TBBS is the industry standard accelerator for passenger car tires due to balanced scorch and cure rate. HTS 3812.10.5050 classification applies to this prepared sulfenamide accelerator providing superior treadwear resistance. Widely used in NR/SBR tire compounds.
Duty Rate — China → United States
40%
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 tire industry specifications (ASTM D4817 equivalent) confirming accelerator grade
• Provide batch consistency data (Rheometer curves) for quality verification
• Ensure free-flowing powder specifications prevent caking during ocean transport