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
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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