Dibutylthiourea Powder from Mexico
Pure dibutylthiourea in powdered form, a chemically defined organo-sulfur compound used primarily as a rubber accelerator in tire manufacturing. It falls under HTS 2930.90.71.00 as it is specifically enumerated within heading 2930 for organo-sulfur compounds other than those excluded. The product contains sulfur directly linked to carbon atoms, fitting Chapter 29 note definitions.
Duty Rate — Mexico → United States
Rate breakdown
Import Tips
• Provide detailed chemical analysis and Certificate of Analysis (CoA) confirming 99%+ purity to avoid reclassification as a mixture under 3824
• Ensure SDS includes GHS hazard classification as it may be skin sensitizing; comply with TSCA registration for chemical imports
• Declare exact CAS number (5392-85-6) on commercial invoice to match HTS specificity and prevent duty disputes