Octaphenylcyclotetrasiloxane (CAS 546-56-5) — formula C48H40O4Si4, molecular weight 793.2; category organic chemicals.
Octaphenylcyclotetrasiloxane (CAS 546-56-5) is a chemical raw material in the organic chemicals category. Its molecular formula C48H40O4Si4 comprises 48 C, 40 H, 4 O, 4 Si atoms. Its molecular weight is about 793.2. Reported physicochemical data: boiling point around 330 °C @760 [mm Hg]. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 546-56-5 |
|---|---|
| Molecular Formula | C48H40O4Si4 |
| Molecular Weight | 793.2 |
| Boiling Point | 330 °C @760 [mm Hg] |
| Applications | Monomers, Intermediate, U.S. Production: 2023: 75, 000 - <500, 000 lb, 2022: 75 |
| Category | Organic Chemicals |
Documented applications: Monomers, Intermediate, U.S. Production: 2023: 75, 000 - <500, 000 lb, 2022: 75.
Octaphenylcyclotetrasiloxane is a carbon-based organic compound with CAS registry number 546-56-5 and molecular formula C48H40O4Si4 (molecular weight 793.2), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 546-56-5
Its molecular formula C48H40O4Si4 comprises 48 C, 40 H, 4 O, 4 Si atoms.
Also known as: Octaphenylcyclotetrasiloxane · 八苯基环四硅氧烷
Category: organic chemicals
The CAS registry number of Octaphenylcyclotetrasiloxane is 546-56-5.
Molecular formula C48H40O4Si4, molecular weight 793.2.
It is also registered under: Octaphenylcyclotetrasiloxane, 八苯基环四硅氧烷.
Recorded applications: Monomers, Intermediate, U.S. Production: 2023: 75, 000 - <500, 000 lb, 2022: 75.
Category: Organic Chemicals.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for Octaphenylcyclotetrasiloxane (CAS 546-56-5), compiled from public chemistry databases.
| CAS Registry Number | 546-56-5 |
|---|---|
| PubChem CID | 68347 |
| Molecular formula | C48H40O4Si4 |
| IUPAC name | 2,2,4,4,6,6,8,8-octakis-phenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane |
| UNII (FDA) | NS00043365 |
| Molecular Weight | 793.2 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 8 |
| Exact Mass | 792.20036589 |
| Monoisotopic Mass | 792.20036589 |
| Topological Polar Surface Area | 36.9 |
| Heavy Atom Count | 56 |
| Boiling Point | 330 °C @760 [mm Hg] |
|---|
Octaphenylcyclotetrasiloxane; 546-56-5; Cyclotetrasiloxane, octaphenyl-; NSC 293057; 1,1,3,3,5,5,7,7-Octaphenylcyclotetrasiloxane; EINECS 208-904-9; Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaphenyl-; DTXSID5052206; RefChem:856036; Cyclotetrasiloxane, octaphenyl; DTXCID7030777; Cyclotetrasiloxane, 2,2,4,4,6,6,8,8octaphenyl; 208-904-9; 2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane; Octaphenyltetracyclosiloxane; 2,2,4,4,6,6,8,8-octakis-phenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
| GHS notification summary | 100% (34 / 34) |
|---|
| GHS notification summary | 100% (34 / 34) |
|---|
This chemical does not meet GHS hazard criteria for 100% (34 of 34) of all reports.
Reported as not meeting GHS hazard criteria by 34 of 34 companies. For more detailed information, please visit ECHA C&L website.
Octaphenylcyclotetrasiloxane · CAS 546-56-5 · C48H40O4Si4. UNII NS00043365. Boiling Point: 330 °C @760 [mm Hg].
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 八苯基环四硅氧烷