Octaphenylcyclotetrasiloxane
Also known as: OCTAPHENYLCYCLOTETRASILOXANE, 2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane, Cyclotetrasiloxane, octaphenyl-, 2,2,4,4,6,6,8,8-Octaphenylcyclooctanetetrasiloxane, Co-Formula CFS-565, CO9817
Octaphenylcyclotetrasiloxane (CAS 546-56-5) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C48H40O4Si4 and a molecular weight of 793.171 g/mol. Key properties include a melting point of 196-198 °C(lit.), a boiling point of 334 °C, a density of 1.2±0.1 g/cm3 and a flash point of 200 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 546-56-5
- Jingsj CID
- J-40984-7
- Molecular Formula
- C48H40O4Si4
- Molecular Weight
- 793.171 g/mol
- Category
- Aromatic Hydrocarbons
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 196-198 °C(lit.) |
|---|---|
| Boiling Point | 334 °C |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 200 °C |
| Exact Mass | 792.200378 |
| PSA | 36.92000 |
| LogP | 5.09280 |
| Refractive Index | 1.661 |
| Additional Property | insoluble |
Customs & Trade Information
| HS Code | 2916399090 |
|---|---|
| Summary | 2916399090 other aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Octaphenylcyclotetrasiloxane?
The CAS number of Octaphenylcyclotetrasiloxane is 546-56-5.
What are the molecular formula and molecular weight of Octaphenylcyclotetrasiloxane?
Octaphenylcyclotetrasiloxane has molecular formula C48H40O4Si4 and molecular weight 793.171 g/mol.
What are the upstream and downstream products of Octaphenylcyclotetrasiloxane?
For Octaphenylcyclotetrasiloxane, Upstream Products: Diphenylsilane, Diphenylsilanediol, Dichlorodiphenylsilane; Downstream Products: Difluoro(diphenyl)silane.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Octaphenylcyclotetrasiloxane (CAS 546-56-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40984-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.