Phosphorus pentoxide

Phosphorus pentoxide (CAS 1314-56-3), also known as P2O5 or phosphoric anhydride, is a powerful desiccating and dehydrating agent.

Where is Phosphorus pentoxide used?

• Pharmaceutical synthesis: cyclization and dehydration reagent for APIs where controlled water removal is essential to reaction yield
• Semiconductors and electronics: phosphorus diffusion source to dope silicon wafers, influencing conductivity profiles in chip fabrication
• Agrochemicals: precursor in synthesizing phosphate-based fertilizers and crop protection compounds
• Catalysts: preparation of solid acid catalysts for petroleum refining and petrochemical processing
• It reacts aggressively with water and moisture-bearing compounds, driving dehydration reactions and producing phosphoric acid intermediates at scale.

Good to know: Hygroscopic; packaging in moisture-sealed drums or multi-layer bags prevents premature hydration during storage.

Commercial specifications

• High-purity grades meeting pharmaceutical and electronics specifications