High-Purity Dibutylthiourea (Lab Grade)
Laboratory-grade dibutylthiourea at 99.5% purity, packaged in small quantities for chemical research and analysis. Meets Chapter 29 criteria as a separate chemically defined organic compound under heading 2930.90.71.00. Used in synthetic organic chemistry and polymer testing applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when put up in laboratory reagent kits with solvents or indicators
Diagnostic or laboratory reagents containing the compound are classified in 3822 regardless of purity.
If imported as other organo-sulfur compounds not specifically enumerated
General residual provision in 2930.90.91 applies if dibutylthiourea specificity contested by Customs.
If erroneous classification focusing on butyl alcoholate characteristics
Alcohol derivatives heading 2905 could be mistakenly applied, but sulfur function dominates for thioureas per Chapter notes.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include lot-specific CoA and NMR spectrum confirming structure to distinguish from mixtures
• Declare as 'research chemical' with CAS 5392-85-6; lab packaging <1kg often qualifies for simplified entry
• Comply with DEA precursor chemical regulations if end-use involves controlled substance synthesis pathways
Related Products under HTS 2930.90.71.00
Dibutylthiourea Powder
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.
Dibutylthiourea Flakes (Industrial Grade)
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.
Dibutylthiourea with Stabilizer (Transport Grade)
Dibutylthiourea containing minimal anticaking stabilizer as permitted by Chapter 29 note (f), specifically classified under 2930.90.71.00. Designed for safe bulk transport in rubber industry supply chains. The stabilizer does not alter its primary chemical identity or intended use.