</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →
2931.90.70.00/N,N'-Bis(trimethylsilyl) Urea Technical Grade/Canada

N,N'-Bis(trimethylsilyl) Urea Technical Grade from Canada

Technical grade N,N'-Bis(trimethylsilyl) urea (95%+ purity) serves as silylating reagent for carbohydrate protection in nucleoside synthesis. Specifically enumerated in HTS 2931.90.70.00 distinguishing it from general silanes.

Duty Rate — Canada → United States

10%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Calculate with your customs valueVerify classification with AI

Import Tips

• Technical vs. 99% grades identical classification but purity affects DEA precursor watch lists

• Air-sensitive; requires inert atmosphere packaging certification for import inspection

• Pharma importers need DMF/CEP documentation linking to FDA drug master files

N,N'-Bis(trimethylsilyl) Urea Technical Grade from Canada — Import Duty Rate | HTS 2931.90.70.00