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Trisiloxane, 1,1,1,5,5,5-hexamethyl-3-phenyl-, also known as hexamethyl-3-phenyltrisiloxane, is a cyclic siloxane compound with the chemical formula C11H24OSi3. It consists of a trisiloxane ring with three silicon atoms and six oxygen atoms, and three methyl groups attached to each silicon atom. Additionally, it has a phenyl group attached to one of the silicon atoms, which gives it unique properties compared to other trisiloxanes. Trisiloxane, 1,1,1,5,5,5-hexamethyl-3-phenyl- is primarily used as a synthetic intermediate in the production of various silicone-based materials, such as polymers, resins, and elastomers, due to its ability to form stable siloxane bonds. It is also known for its thermal stability and low toxicity, making it a valuable component in the silicone industry.

27991-58-8

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27991-58-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27991-58-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,9,9 and 1 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 27991-58:
(7*2)+(6*7)+(5*9)+(4*9)+(3*1)+(2*5)+(1*8)=158
158 % 10 = 8
So 27991-58-8 is a valid CAS Registry Number.

27991-58-8SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name trimethyl-[phenyl(trimethylsilyloxy)silyl]oxysilane

1.2 Other means of identification

Product number -
Other names bis(trimethylsiloxy)phenylsilane

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:27991-58-8 SDS

27991-58-8Relevant academic research and scientific papers

COMPLEX COMPOUND, AND PRODUCTION METHOD OF SILOXANE

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Paragraph 0046; 0047, (2019/07/13)

PROBLEM TO BE SOLVED: To provide a production method of siloxane capable of producing siloxane efficiently; and to provide a compound useful in production of siloxane. SOLUTION: In a method, siloxane is produced efficiently, by progressing a dehydrogenati

Selective hydrosiloxane synthesis: Via dehydrogenative coupling of silanols with hydrosilanes catalysed by Fe complexes bearing a tetradentate PNNP ligand

Takeshita, Tomohiro,Sato, Kazuhiko,Nakajima, Yumiko

, p. 17004 - 17010 (2019/01/03)

A well-defined iron complex system was established using PNNP-R (R = Ph and Cy) as a strong σ-donating ligand with a rigid meridional tetradentate structure. Reactive Fe(0) complexes [{Fe(PNNP-R)}2(μ-N2)] were synthesized by a reaction of the corresponding iron dihalide with NaBEt3H and structurally characterized. The reaction proceeded via the iron dihydride intermediate [Fe(H)2(PNNP-R)], which underwent H2 reductive elimination, supporting the hemilabile behavior of PNNP-R. [{Fe(PNNP-R)}2(μ-N2)] catalyzed the dehydrogenative coupling of silanols with silanes to selectively form various hydrosiloxanes, which are important building blocks for the synthesis of a range of siloxane compounds. This system exhibited higher catalytic efficiency than the previously reported precious-metal-catalyzed systems.

Aerobic Co or Cu/NHPI-catalyzed oxidation of hydride siloxanes: Synthesis of siloxanols

Arzumanyan, Ashot V.,Goncharova, Irina K.,Novikov, Roman A.,Milenin, Sergey A.,Boldyrev, Konstantin L.,Solyev, Pavel N.,Tkachev, Yaroslav V.,Volodin, Alexander D.,Smol'Yakov, Alexander F.,Korlyukov, Alexander A.,Muzafarov, Aziz M.

, p. 1467 - 1471 (2018/04/12)

A highly efficient preparative method for the synthesis of siloxanols based on aerobic Co(OAc)2 or Cu(OAc)2/NHPI-catalyzed oxidation of hydride siloxanes using "green", commercially available, simple inexpensive reagents and mild reaction conditions has been proposed. This is a general reaction for the synthesis of mono-, oligo- and polymeric siloxanols with various structures (linear, branched and cyclic).

Highly Selective Synthesis of Hydrosiloxanes by Au-Catalyzed Dehydrogenative Cross-Coupling Reaction of Silanols with Hydrosilanes

Satoh, Yasushi,Igarashi, Masayasu,Sato, Kazuhiko,Shimada, Shigeru

, p. 1836 - 1840 (2017/08/14)

We report a highly selective synthesis of siloxane building blocks containing SiH2 or SiH functionalities. AuCl(PPh3)/PPh3 or AuCl(PPh3)/PnBu3 system catalyzed the reaction of trihydrosilanes with silanols giving SiH2-containing siloxanes exclusively. On the other hand, a highly selective reaction of dihydrosilanes with silanols to afford SiH-containing siloxanes was achieved by simply changing the phosphine ligand to a bidentate one, xantphos. Usefulness of SiH2-containing siloxanes was demonstrated by the synthesis of a trisiloxane, Et3SiOSi(Ph)(H)OSitBuMe2, and a pentasiloxane, Ph2Si(OSiHPhOSiEt3)2, bearing SiH functionalities.

Method of manufacturing polyimidesiloxane compd. (by machine translation)

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Paragraph 0027; 0028, (2016/11/17)

PROBLEM TO BE SOLVED: rhodium, platinum, and palladium complex or the like instead of the catalyst is found, to provide a new method for manufacturing polyimidesiloxane compd. ~~~ a SOLUTION: and in the condensation reaction silanolated hydrosilane, nickel compound represented by the following eq. (C) is used as a catalyst, siloxane compound can be produced. [And 1] ( In the formula, R 3 are each independently a hydrogen atom, or a nitrogen atom, an oxygen atom, a sulfur atom, a silicon atom, phosphorus atom, and a halogen atom is selected from the group consisting of at least 1 may also include a kind of carbon number 1-20 hydrocarbon group. ) Selected drawing: no (by machine translation)

Substituted lithiumtrimethylsiloxysilanides LiSiRR′(OSiMe3) - Investigations of their synthesis, stability and reactivity

Harloff, Joerg,Popowski, Eckhard,Reinke, Helmut

, p. 1421 - 1441 (2007/10/03)

The reactions of the trimethylsiloxychlorosilanes (Me3SiO)RR′SiCl (1a-h: R′ = Ph, 1a: R = H, 1b: R = Me, 1c: R = Et, 1d: R = iPr, 1e: R = tBu, 1f: R = Ph, 1g: R = 2,4,6-Me3C6H2 (Mes), 1h: R

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