Dibutylthiourea Flakes (Industrial Grade) from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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