797-77-3

Basic information

• Product Name: 3,3-DIPHENYLHEXAMETHYLTRISILOXANE
• Synonyms: 3,3-DIPHENYLHEXAMETHYLTRISILOXANE;HEXAMETHYL-3,3-DIPHENYLTRISILOXANE;3,3-DIPHENYLHEXAMETHYLTRISILOXANE 97%;3,3-Diphenylhexamethyltrisiloxane,97%;1,1,1,5,5,5-hexamethyl-3,3-diphenyltrisiloxane;1,1,1,5,5,5-hexamethyl-3,3-diphenyl-trisiloxane;3,3-diphenyl-1,1,1,5,5,5-hexamethyl-trisiloxane;trisiloxane,1,1,1,5,5,5-hexamethyl-3,3-diphenyl-
• CAS NO: 797-77-3
• Molecular Formula: C₁₈H₂₈O₂Si₃
• Molecular Weight: 360.67
• Mol File: 797-77-3.mol
• Article Data: 15

Chemical Properties

• Boiling Point: 172 °C (18 mmHg)
• Flash Point: 141.8°C
• Appearance: /
• Density: 0.98
• Vapor Pressure: 7.96E-05mmHg at 25°C
• Refractive Index: 1.49-1.493
• CAS DataBase Reference: 3,3-DIPHENYLHEXAMETHYLTRISILOXANE(CAS DataBase Reference)
• NIST Chemistry Reference: 3,3-DIPHENYLHEXAMETHYLTRISILOXANE(797-77-3)
• EPA Substance Registry System: 3,3-DIPHENYLHEXAMETHYLTRISILOXANE(797-77-3)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 37/39-26
• Hazardous Substances Data: 797-77-3(Hazardous Substances Data)

Usage

Chemical Properties

clear colorless liquid

InChI:InChI=1/C18H28O2Si3/c1-21(2,3)19-23(20-22(4,5)6,17-13-9-7-10-14-17)18-15-11-8-12-16-18/h7-16H,1-6H3

Upstream product

• 107-46-0 Hexamethyldisiloxane 
• 947-42-2 diphenylsilanediol 
• 4648-54-8 trimethylsilylazide 
• 775-12-2 diphenylsilane 
• 556-67-2 octamethylcyclotetrasiloxane 
• 6843-66-9 dimethoxy(diphenyl)silane 
• 2553-19-7 diethoxydiphenylsilane 
• 1066-54-2 trimethylsilylacetylene 
• 999-97-3 1,1,1,3,3,3-hexamethyl-disilazane 
• 13688-55-6 trimethylsilyl acrylate 
• 18537-23-0 diphenylbis(allyloxy)silane 
• 75-77-4 chloro-trimethyl-silane 
• 50870-65-0 bis(benzyloxy)diphenylsilane 
• 80-10-4 diphenylsilyl dichloride 

Relevant articles and documents

Silylation of Alcohols, Phenols, and Silanols with Alkynylsilanes – an Efficient Route to Silyl Ethers and Unsymmetrical Siloxanes

The formation of several silyl ethers (alkoxysilanes, R3Si-OR') and unsymmetrical siloxanes (R3Si-O-SiR'3) can be catalyzed by the commercially available potassium bis(trimethylsilyl)amide (KHMDS). The reaction proceeds via direct dealkynative coupling between various alcohols or silanols and alkynylsilanes, with a simultaneous formation of gaseous acetylene as the sole by-product. The dehydrogenative and dealkenative coupling of alcohols or silanols are well-investigated, whilst the utilization of alkynylsilanes as silylating agents has never been comprehensively studied in this context. Overall, the presented system allows the synthesis of various attractive organosilicon compounds under mild conditions, making this approach an atom-efficient, environmentally benign, and sustainable alternative to existing synthetic solutions.

A Highly Effective Route to Si?O?Si Moieties through O-Silylation of Silanols and Polyhedral Oligomeric Silsesquioxane Silanols with Disilazanes

A simple and highly practical catalyst-free O-silylation of silanols with commercially available disilazanes has been developed under mild conditions. In the case of polyhedral oligomeric silsesquioxane (POSS) silanols and some other silanols, it was necessary to use catalytic amounts of inexpensive Bi(OTf)3 as additional catalyst. This efficient chlorine-free protocol involves the synthesis of a wide range of important organosilicon derivatives such as unsymmetrical disiloxanes and functionalized silsesquioxanes.

Method for producing polyimidesiloxane

PROBLEM TO BE SOLVED: To provide a method for synthesizing siloxanes at will in good yield while maintaining high structural controllability, which can be applied to substrates having various substituents.SOLUTION: The method comprises reacting benzyloxysilanes and silicon halides in the absence of hydrogen using a catalyst comprising a transition metal or a compound thereof, preferably a metal of group 9 or group 10 of the periodic table or a compound thereof. Thereby, corresponding siloxanes can be produced safely and simply in high yield under a mild reaction condition accompanied by elimination of a benzyl halide. Especially, by using an active carbon-supported catalyst as a heterogeneous catalyst, the target siloxanes can be separated easily.