Bulk Rochelle Salt Dihydrate USP from Mexico
Pharmaceutical bulk potassium sodium tartrate tetrahydrate (dihydrate formula KNaC4H4O6·4H2O) meeting USP monograph. Classifies under HTS 2918.13.3000 as the specifically named Rochelle salt of tartaric acid. Used in bulk for tablet compression and syrup formulation.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Submit USP monograph compliance certificate with assay 99.0-102.0% and water content 21.0-27.0%
• Use supersacks with inner food-grade polyethylene liners for bulk shipments
• Validate dihydrate crystal form via XRD if questioned; anhydrous form would reclassify