puriss. p.a., ACS reagent, ≥98.0% (T) Synonym(s): Phosphoric anhydride; Phosphorus(V) oxide Empirical Formula: O₅P₂ Formula Weight: 141.94 Linear Formula: P₂O₅ Purity: ≥98.0% (T) Melting Point: 340 °C(lit.) …