Dibutylthiourea Flakes (Industrial Grade) from Canada
Dibutylthiourea supplied in flake form for industrial rubber vulcanization processes, meeting Chapter 29 requirements for separate chemically defined compounds. Classified specifically under 2930.90.71.00 due to its thiourea structure with sulfur-carbon linkage. Used in synthetic rubber production for automotive belts and hoses.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Verify flake purity via HPLC certificate; impurities >2% risk reclassification to mixtures under 3824
• Include end-use statement specifying rubber accelerator application to support Chapter 29 classification over Chapter 38
• Package in UN-approved fiber drums with proper sulfur compound labeling to meet DOT hazardous material transport rules