Thiosemicarbazide from Canada
Thiosemicarbazide is a thio-ureine derivative used in metal chelation and antiviral research. Covered by HTS 2924.21.50.00 as 'other' ureines and derivatives; salts thereof.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Heavy metal chelation data for lab safety documentation
• Schedule 3 chemical if >100g quantities (DEA watch)
• FTIR spectrum confirming thiosemicarbazide tautomer