CAS 2370-88-9

1,3,5,7-Tetramethylcyclotetrasiloxane

Description:

1,3,5,7-Tetramethylcyclotetrasiloxane, with the CAS number 2370-88-9, is a cyclic siloxane compound characterized by its unique ring structure composed of four silicon atoms and four oxygen atoms, with methyl groups attached to each silicon atom. This compound is part of a larger class of siloxanes, which are known for their flexibility, thermal stability, and low surface tension. It typically exhibits a low viscosity and is a colorless, odorless liquid at room temperature. The presence of the methyl groups contributes to its hydrophobic properties, making it useful in various applications, including as a silicone fluid, in personal care products, and in industrial formulations. Additionally, 1,3,5,7-Tetramethylcyclotetrasiloxane has a relatively low volatility, which enhances its stability in formulations. However, environmental and health considerations are important, as some cyclic siloxanes have raised concerns regarding their persistence and potential bioaccumulation. Overall, this compound is valued for its unique chemical properties and versatility in various applications.

Formula: C₄H₁₆O₄Si₄

InChI: InChI=1S/C4H16O4Si4/c1-9-5-10(2)7-12(4)8-11(3)6-9/h9-12H,1-4H3

InChI key: InChIKey=BQYPERTZJDZBIR-UHFFFAOYSA-N

SMILES: C[SiH]1O[SiH](C)O[SiH](C)O[SiH](C)O1

Synonyms:

• 1,2,5,7-Tetramethylcyclotetrasiloxane
• 1,3,5,7-Cyclotetra(methylsiloxane)
• 1,3,5,7-Tetrahydrogen-1,3,5,7-tetramethylcyclotetrasiloxane
• 1,3,5,7-Tetramethylcyclotetrasiloxane
• 2,4,6,8-Tetramethyl-1,3,5,7,2,4,6,8-Tetroxatetrasilocane
• 2,4,6,8-Tetramethyl-1,3,5,7,2,4,6,8-Tetroxatetrasilocane-2,4,6,8-Tetrayl
• 2,4,6,8-Tetramethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• 2,4,6,8-Tetramethylcyclotetrasiloxan
• 2,4,6,8-Tetrametilciclotetrasiloxano
• Cyclotetrasiloxane, 2,4,6,8-tetramethyl-
• Cyclotetrasiloxane, Tetramethyl-
• D₄H
• Hydrosilox
• Kf 9902
• Ls 8600
• Sit 7530.0
• Tetramethylcyclotetrasiloxane

2,4,6,8-Tetramethylcyclotetrasiloxane

CAS: 2370-88-9

Formula: C₄H₁₆O₄Si₄

Purity: >95.0%(GC)

Color and Shape: Colorless to Almost colorless clear liquid

Molecular weight: 240.51

Ref: 3B-T2076

2,4,6,8-Tetramethylcyclotetrasiloxane, 99%

CAS: 2370-88-9

Tetramethyl-cyclotetrasiloxane is a good impregnant of photoelectric material. It is used to manufacture of modified siloxane with defined hydrogen content and chain quantity. It is also used in production of silicone polymers and acts as a precursor for the deposition of polysiloxane, cyclic siloxa

Formula: C₄H₁₂O₄Si₄

Purity: 99%

Color and Shape: Clear colorless, Liquid

Molecular weight: 236.48

Ref: 02-L16642

2,4,6,8-Tetramethylcyclotetrasiloxane

CAS: 2370-88-9

2,4,6,8-Tetramethylcyclotetrasiloxane

Purity: 98%

Molecular weight: 240.51g/mol

Ref: 54-OR1010013

1,3,5,7-TETRAMETHYLCYCLOTETRASILOXANE

CAS: 2370-88-9

Siloxane-Based Silane Reducing Agent
Organosilanes are hydrocarbon-like and possess the ability to serve as both ionic and free-radical reducing agents. These reagents and their reaction by-products are safer and more easily handled and disposed than many other reducing agents. The metallic nature of silicon and its low electronegativity relative to hydrogen lead to polarization of the Si-H bond yielding a hydridic hydrogen and a milder reducing agent compared to aluminum-, boron-, and other metal-based hydrides. A summary of some key silane reductions are presented in Table 1 of the Silicon-Based Reducing Agents brochure.
1,3,5,7-Tetramethylcyclotetrasiloxane; TMCTS; Methyl hydrogen cyclic tetramer
ΔHcomb: 5,308 kJ/molΔHvap: 177.9 kJ/molVapor pressure, 20 °C: 7.0 mmCritical temperature: 278 °CHigh molecular weight silane reducing agentIn presence of oxygen plasma generates SiO2 films for microelectronicsCyclic monomer- undergoes hydrosilylation reactionsForms hybrid inorganic-organic polymers with dienes suitable for circuit board resinsForms gate dielectrics by CVDExtensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007

Formula: C₄H₁₆O₄Si₄

Purity: 97%

Color and Shape: Colourless Liquid

Molecular weight: 240.51

Ref: 3H-SIT7530.0

1,3,5,7-Tetramethylcyclotetrasiloxane

CAS: 2370-88-9

S15975 - 1,3,5,7-Tetramethylcyclotetrasiloxane

Formula: C₄H₁₆O₄Si₄

Purity: 95%

Color and Shape: Liquid, Clear

Molecular weight: 240.508

Ref: 10-S15975