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
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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