Disodium Phosphate Anhydrous USP from Mexico
Disodium phosphate (Na2HPO4) is a chemically defined inorganic salt of mono- or disodium used as a buffering agent in pharmaceuticals and food processing. It falls under HTS 2835.22.00.00 as a phosphate of disodium, meeting Chapter 28 criteria for inorganic compounds. Commonly supplied as a white crystalline powder for industrial and USP-grade applications.
Duty Rate — Mexico → United States
11.4%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Verify certificate of analysis (COA) confirming disodium phosphate purity >98% to avoid reclassification as mixtures under 2842
• For food/pharma imports, provide FDA prior notice and comply with 21 CFR labeling; common pitfall is missing heavy metal specs
• Use ISBP for LC payments; declare exact CAS 7558-79-4 to prevent customs holds on chemical identity