Pharma-Grade Anhydrous Tetraborate from Mexico
Pharmaceutical-grade anhydrous disodium tetraborate for buffer solutions in drug manufacturing. HTS 2840.11.00.00 applies as refined anhydrous borax, chemically defined per Chapter 28. High purity ensures no water interference in formulations.
Duty Rate — Mexico → United States
10.3%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include FDA Drug Master File references if applicable for pharma imports
• Test for heavy metals per USP standards to meet import quality controls
• Separate from general chemicals to avoid cross-contamination claims