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1,3-Dichlorotetraphenyldisiloxane, an organosilicon compound with the molecular formula C32H24Cl2O2Si2, is a white solid that exhibits high solubility in organic solvents. Characterized by its unique structure comprising two silicon atoms linked by an oxygen atom, adorned with four phenyl groups and two chlorine atoms, 1,3-DICHLOROTETRAPHENYLDISILOXANE is renowned for its exceptional thermal stability and resistance to oxidative degradation. These properties render 1,3-Dichlorotetraphenyldisiloxane a valuable precursor for the synthesis of other organosilicon compounds and a key ingredient in the formulation of silicone polymers and organic synthesis reagents.

7756-87-8

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7756-87-8 Usage

Uses

Used in Silicone Polymer Production:
1,3-Dichlorotetraphenyldisiloxane serves as a crucial precursor in the manufacturing process of silicone polymers, which are known for their wide range of applications across various industries due to their unique properties such as heat resistance, flexibility, and biocompatibility.
Used in Organic Synthesis:
As a reagent in organic synthesis, 1,3-Dichlorotetraphenyldisiloxane is utilized for its ability to facilitate specific chemical reactions, contributing to the creation of a diverse array of organic compounds for different applications.
Used in Material Development:
1,3-Dichlorotetraphenyldisiloxane is employed in the development of materials with enhanced robustness, leveraging its high thermal stability and resistance to oxidative degradation. This makes it suitable for applications where materials are exposed to harsh conditions, such as high temperatures or oxidative environments.
Used in Specialty Chemicals Industry:
In the specialty chemicals industry, 1,3-Dichlorotetraphenyldisiloxane is used as a building block for the synthesis of complex organosilicon compounds that may have unique properties or specific uses in various high-tech applications.

Check Digit Verification of cas no

The CAS Registry Mumber 7756-87-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,5 and 6 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7756-87:
(6*7)+(5*7)+(4*5)+(3*6)+(2*8)+(1*7)=138
138 % 10 = 8
So 7756-87-8 is a valid CAS Registry Number.
InChI:InChI=1/C24H20Cl2OSi2/c25-28(21-13-5-1-6-14-21,22-15-7-2-8-16-22)27-29(26,23-17-9-3-10-18-23)24-19-11-4-12-20-24/h1-20H

7756-87-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name chloro-[chloro(diphenyl)silyl]oxy-diphenylsilane

1.2 Other means of identification

Product number -
Other names 1,3-Dichlorotetraphenyldisiloxane

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7756-87-8 SDS

7756-87-8Relevant academic research and scientific papers

Synthesis and characterization of unsymmetrical double-decker siloxane (Basket Cage)

Kunthom, Rungthip,Takeda, Nobuhiro,Unno, Masafumi

, (2019)

The one-pot synthesis of an unsymmetrical double-decker siloxane with a novel structure via the reaction of double-decker tetrasodiumsilanolate with 1 equiv. of dichlorotetraphenyldisiloxane in the presence of an acid is reported herein for the first time. The target compound bearing all phenyl substituents on the unsymmetrical siloxane structure was successfully obtained, as confirmed by 1H-NMR, 13C-NMR, 29Si-NMR, IR, MALDI-TOF, and X-ray crystallography analyses. Additionally, the thermal properties of the product were evaluated by TG/DTA and compared with those of other siloxane cage compounds.

Building blocks for oligomeric siloxanes –selective chlorination of hydrido-siloxanes

Hafner, Thomas,Torvisco, Ana,Uhlig, Frank

supporting information, p. 1 - 4 (2018/09/11)

A new method was developed to achieve highly selective monochlorination of α,ω-dihydridosiloxanes, ((H)Me2SiO-(SiMe2O)n-SiMe2(H), n = 0–2; (H)R2Si–O-SiR2(H); R = Me, iPr, Ph; 3,5-dihydridooctamethyltetrasiloxane, Me3SiO-(Si(H)MeO)2–SiMe3) with trichloroisocyanuric acid (TCCA). The dependence of the selectivity of the monochlorination on the siloxane chain length is also discussed.

Stereochemistry of the reaction of cis,trans,cis-2,4,6,8-tetraisocyanato-2, 4,6,8-tetramethylcyclotetrasiloxane with triphenylsilanol and 1,1,3,3-tetraphenyldisiloxane-1,3-diol

Seki, Hiroyasu,Abe, Yoshimoto,Gunji, Takahiro

experimental part, p. 846 - 851 (2011/03/21)

All-cis-2,4,6,8-tetramethyl-2,4,6,8-tetrakis(triphenylsiloxy) cyclotetrasiloxane (4) and syn-1,3,9,11-tetramethyl-5,5,7,7,13,13,15,15- octaphenyltricyclo[9.5.1.13,9]octasiloxane (5) were synthesized by the reaction of cis,trans,cis-[MeSi(NCO)O]4 (1) with Ph 3SiOH (2) and [Ph2Si(OH)]2O (3), respectively, in the presence of pyridine for the sake of investigating the synthesis of ladder polysilsesquioxanes with perfect siloxane frameworks. Their stereostructures were confirmed by nuclear magnetic resonance spectra and X-ray crystallography, which revealed that 4 and 5 did not retain the stereostructure of the precursor 1. This result was caused by the racemization of 1 with pyridine, and a subsequent nucleophilic substitution reaction of 1 with 2 or 3, including inversion and retention of the configuration at the silicon atoms.

Synthesis and structure of syn,anti,syn-pentacyclic ladder oligomethylsilsesquioxane

Seki, Hiroyasu,Abe, Noritaka,Abe, Yoshimoto,Gunji, Takahiro

supporting information; experimental part, p. 722 - 723 (2011/08/08)

Novel pentacyclic ladder oligomethylsilsesquioxane was synthesized using cis,trans,cis-[MeSi(NCO)O]4 as a building block. This compound was isolated in 13% yield by reprecipitation from the reaction mixture. X-ray crystallography revealed that pentacyclic rings assume a syn,anti,syn- configuration, resulting in the tube-like structure.

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