Diphenyl Phosphate

• CAT Number: R059341
• CAS Number: 838-85-7
• Molecular Formula: C12H11O4P
• Molecular Weight: 250.19
• Purity: ≥95%
• Synonyms: Phosphoric Acid Diphenyl Ester; Diphenyl Hydrogen Phosphate; NSC 6518; Phenyl Phosphate
• Storage: RT
• IUPAC Name: diphenyl hydrogen phosphate
• InChI: InChI=1S/C12H11O4P/c13-17(14,15-11-7-3-1-4-8-11)16-12-9-5-2-6-10-12/h1-10H,(H,13,14)
• InChIKey: ASMQGLCHMVWBQR-UHFFFAOYSA-N
• SMILES: C1=CC=C(C=C1)OP(=O)(O)OC2=CC=CC=C2

Diphenyl phosphate（Cat No.:R059341）is an organophosphorus compound with the molecular formula (C₆H₅O)₂PO(OH). It appears as a colorless to pale yellow liquid or crystalline solid, depending on conditions, and is commonly used as a flame retardant, plasticizer, and intermediate in chemical synthesis. Its structure features a phosphate group bonded to two phenyl rings, offering thermal stability and compatibility with polymer matrices. In organic chemistry, it serves as a mild acidic catalyst and protecting group reagent. Diphenyl phosphate is also studied for its environmental persistence and potential role in the degradation of organophosphates in analytical and toxicological research.