TBBS Rubber Accelerator (N-tert-Butyl-2-benzothiazolesulfenamide) from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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