2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane
2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane (CAS 77-63-4) is an organosilicon compound with the empirical formula C28H32O4Si4 and a molecular weight of 544.89 g/mol. This cyclotetrasiloxane derivative serves as a reactant in chemical synthesis. Its applications are primarily within inorganic chemistry and silicon-based material research, offering a specific structural motif for further chemical transformations.
- Synonyms
- 8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane77-63-4C28H32O4Si4

Synthesis of Ethylhydrosilicone Fluids
This compound acts as a crucial reactant in the synthesis of ethylhydrosilicone fluids. These fluids are used in various industrial applications requiring specific silicone properties.
Chemical Synthesis Intermediate
Utilised as a building block in chemical synthesis, it enables the construction of more complex organosilicon structures. Its defined cyclic structure makes it valuable for controlled organic reactions.
Inorganic Chemistry Research
Employed in studies within inorganic chemistry, particularly focusing on silicon-based compounds and their reaction mechanisms. It provides a well-defined tetrasiloxane core for investigation.
| Molecular weight | 544.89 |
|---|---|
| Empirical formula | C28H32O4Si4 |
| Application | Reactant for synthesis of ethylhydrosilicone fluids1 |
| Protective equipment | Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane used for?
+
2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane (CAS 77-63-4) is primarily used as a reactant for the synthesis of ethylhydrosilicone fluids and as an intermediate in chemical synthesis within inorganic chemistry and silicon research.
What are the CAS number and molecular formula?
+
The CAS number for 2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane is 77-63-4, and its empirical formula is C28H32O4Si4.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane. The specific grade and purity are typically research or technical grade, and we do not represent it as USP, BP, or EP.
How should 2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane be handled?
+
Handling requires appropriate safety measures, including the use of eyeshields and gloves. Please refer to the Safety Data Sheet for comprehensive handling and safety information.
Is this compound subject to any special regulations?
+
Based on the provided data, there is no indication that 2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane is a controlled substance. Always consult current local and international regulations.
How is this chemical shipped and exported?
+
Tech Serve Solutions exports chemicals globally, adhering to all relevant shipping and customs regulations. Packaging is designed to ensure product integrity and safety during transit.
How can I request a quote or sample?
+
To request a quote or a sample of 2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane, please contact our sales department via the website or by phone.
▶ Related products

Benzeneruthenium(II) chloride dimer
Ru2(C6H6)2Cl4
Catalysis & Inorganic
Benzoylferrocene
C17H14FeO
Catalysis & Inorganic
Benzyldiphenylphosphine
C6H5CH2P(C6H5)2
Catalysis & Inorganic
Beryllium
Be
Catalysis & Inorganic
Beryllium oxide
BeO
Catalysis & Inorganic![Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer — chemical structure, CAS 12257-42-0; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F12257-42-0.png&w=3840&q=75)
Bicyclo[2.2.1]hepta-2,5-diene-rhodium(I) chloride dimer
Catalysis & Inorganic
![Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo — chemical structure, CAS 1228149-03-8; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1228149-03-8.png&w=3840&q=75)
Bis[(10,11-η)-5-[(11bS)-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-yl- κP4]-5H-dibenz[b,f]azepine]rhodium(I) tetrafluorobo
1-d:1′
Catalysis & Inorganic![Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride (C16H20ClN3Ni) — chemical structure, CAS 1033772-47-2; Catalysis & Inorganic, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F1033772-47-2.png&w=3840&q=75)
Bis[(2-dimethylamino)phenyl]amine nickel(II) chloride
C16H20ClN3Ni
Catalysis & Inorganic▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis