Anhydrous Refrax Borax from Mexico
"Refrax" brand anhydrous disodium tetraborate for fiberglass production. Classified under HTS 2840.11.00.00 as it is the anhydrous form of refined borax, a pure inorganic borate compound. Used where hydration would interfere with processes.
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
• Provide brand-specific technical data sheets confirming anhydrous specs
• Avoid storage with moisture to prevent conversion to hydrate form pre-inspection
• File for binding ruling if purity borderline to prevent reclassification