The Phosphinic acid,P,P-diphenyl-, ethyl ester, with the CAS registry number 1733-55-7, has the systematic name of ethyl diphenylphosphinate. It is a kind of organics, and should be stored in the dry and cool environment. And the molecular formula of the chemical is C₁₄H₁₅O₂P.

The characteristics of Phosphinic acid,P,P-diphenyl-, ethyl ester are as followings: (1)ACD/LogP: 2.73; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 2; (4)#H bond donors: 0; (5)#Freely Rotating Bonds: 4; (6)Polar Surface Area: 36.11 Å²; (7)Index of Refraction: 1.555; (8)Molar Refractivity: 69.2 cm³; (9)Molar Volume: 215.4 cm³; (10)Polarizability: 27.4×10^-24cm³; (11)Surface Tension: 42.2 dyne/cm; (12)Density: 1.14 g/cm³; (13)Flash Point: 178.5 °C; (14)Enthalpy of Vaporization: 56.98 kJ/mol; (15)Boiling Point: 348.8 °C at 760 mmHg; (16)Vapour Pressure: 9.88E-05 mmHg at 25°C. 

Preparation of Phosphinic acid,P,P-diphenyl-, ethyl ester: This chemical can be prepared by bromobenzene and phenyl-phosphinic acid ethyl ester. The reaction will need reagent triethylamine, and catalyst tetrakispalladium. The reaction time is 6 hours with temperature of 90°C, and the yield is about 79%. 

Uses of Phosphinic acid,P,P-diphenyl-, ethyl ester: It can react with bromomethyl-phosphonic acid diethyl ester to produce Diphenylphosphinyl-methanphosphonsaeure-diaethylester. The reaction time is 3 hours with heating, and the yield is about 70%.   

 
Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=P(OCC)(c1ccccc1)c2ccccc2
(2)InChI: InChI=1/C14H15O2P/c1-2-16-17(15,13-9-5-3-6-10-13)14-11-7-4-8-12-14/h3-12H,2H2,1H3
(3)InChIKey: QRJASDLTCXIYRK-UHFFFAOYAE