N-(Oxydiethylene)benzothiazole-2-sulfenamide (NOBS) Crystals from Mexico
NOBS is a delayed-action sulfenamide accelerator containing the specified benzothiazole ring system, explicitly named in HTS 2934.20.1500. It provides scorch safety and fast curing in rubber compounds, especially for thick sections.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Submit manufacturer's specification sheet confirming CAS 102-77-8 and minimum 95% purity for proper Chapter 29 classification
• Include rubber industry end-use letters to prevent misclassification as general chemical preparations
• Ensure DOT-compliant packaging for this combustible solid (UN3077) with proper hazard labeling