The Trisiloxane,1,5-diethenyl-1,1,5,5-tetramethyl-3,3-diphenyl-, with the CAS registry number 18586-22-6, is also known as 1,1,5,5-Tetramethyl-3,3-diphenyl-1,5-divinyltrisiloxan. Its EINECS registry number is 242-426-1. This chemical's molecular formula is C₂₀H₂₈O₂Si₃ and molecular weight is 384.6916. What's more, its IUPAC name is Bis[[ethenyl(dimethyl)silyl]oxy]-diphenylsilane.

Physical properties about Trisiloxane,1,5-diethenyl-1,1,5,5-tetramethyl-3,3-diphenyl- are: (1)ACD/LogP: 9.44; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 9.44; (4)ACD/LogD (pH 7.4): 9.44; (5)ACD/BCF (pH 5.5): 1000000; (6)ACD/BCF (pH 7.4): 1000000; (7)ACD/KOC (pH 5.5): 3255556.25; (8)ACD/KOC (pH 7.4): 3255556.25; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 8; (12)Polar Surface Area: 18.46 Å²; (13)Index of Refraction: 1.515; (14)Molar Refractivity: 117.79 cm³; (15)Molar Volume: 390.3 cm³; (16)Polarizability: 46.69×10^-24 cm³; (17)Surface Tension: 27.8 dyne/cm; (18)Density: 0.98 g/cm³; (19)Flash Point: 154 °C; (20)Enthalpy of Vaporization: 59.93 kJ/mol; (21)Boiling Point: 376.1 °C at 760 mmHg; (22)Vapour Pressure: 1.6E-05 mmHg at 25 °C.

When you are dealing with this chemical, you should be very careful. This chemical is irritating to eyes, respiratory system and skin. Therefore, you should wear suitable protective clothing, gloves and eye/face protection. In case of contacting with eyes, you should rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1) SMILES: O([Si](\C=C)(C)C)[Si](O[Si](\C=C)(C)C)(c1ccccc1)c2ccccc2
(2) InChI: InChI=1/C20H28O2Si3/c1-7-23(3,4)21-25(22-24(5,6)8-2,19-15-11-9-12-16-19)20-17-13-10-14-18-20/h7-18H,1-2H2,3-6H3
(3) InChIKey: OOGRAMOPTBMVKO-UHFFFAOYAY