Phosphorus Pentoxide from Mexico
Phosphorus pentoxide (P₄O₁₀), also called phosphoric anhydride, is a white powder used as a desiccant and dehydrating agent. It qualifies under HTS 2811.29.5000 as an other inorganic oxygen compound of the nonmetal phosphorus. Highly reactive with water to form phosphoric acid.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Mandatory UN 1806 hazardous material declaration; use moisture-proof packaging
• COA required to confirm anhydrous form vs. phosphoric acid (2809)
• Check for dissolution prohibitions that trigger 2809 reclassification