MBTS Rubber Accelerator (Dibenzothiazyl disulfide) from Canada
MBTS serves as a primary or secondary accelerator in rubber compounding, particularly for EPDM and butyl rubber applications. Classified under HTS 3812.10.5050 as a prepared rubber accelerator, it provides scorch safety and functions well in neutral or alkaline systems. Commonly used in automotive seals, hoses, and belting.
Duty Rate — Canada → United States
15%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include vulcanization test data demonstrating accelerator performance to distinguish from basic thiazole chemicals
• Comply with DOT hazardous material shipping requirements (often Class 9) and ensure UN proper shipping name accuracy
• Maintain certificates of analysis showing minimum purity levels (typically 98%) required for accelerator classification