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Home/Compounds/CAS 546-56-5
Formula C48H40O4Si4MW 793.2Research-use catalog entryCOA/SDS by request

Octaphenylcyclotetrasiloxane

CAS Number: 546-56-5

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Available options

Available Options

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1 kg
Purity
98%
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Loading RDKit molecule structure...
InChIKey: VSIKJPJINIDELZ-UHFFFAOYSA-NC48H40O4Si4 | MW 793.2

Chemical Absolute Identifiers

CAS Number

546-56-5

PubChem CID

68347

Molecular Formula

C48H40O4Si4

Molecular Weight

793.2 g/mol

Exact Mass

792.200366

InChIKey

VSIKJPJINIDELZ-UHFFFAOYSA-N

IUPAC Name

2,2,4,4,6,6,8,8-octakis-phenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane

SMILES String

C1=CC=C(C=C1)[Si]2(O[Si](O[Si](O[Si](O2)(C3=CC=CC=C3)C4=CC=CC=C4)(C5=CC=CC=C5)C6=CC=CC=C6)(C7=CC=CC=C7)C8=CC=CC=C8)C9=CC=CC=C9

Physical Properties

No physical property values available.

Properties are provided as catalog reference data and may be confirmed through supplier documentation when required.

Catalog Facts

Structural features

Octaphenylcyclotetrasiloxane (CAS 546-56-5) is listed in the Materials Science portfolio, with molecular formula C48H40O4Si4 and molecular weight 793. 20 g/mol.

Sourcing context

Catalog reference for RFQ preparation, supplier confirmation, and research chemical sourcing review.

Research use context

Intended for materials chemistry research and formulation screening workflows.

Documentation needs

COA/SDS status, availability, lead time, pack size, and shipment documentation can be confirmed during quotation.

Applications & Classification

Materials ScienceResearch intermediateCustom synthesis building blockResearch chemical sourcingCustom synthesis and catalog availability reviewCOA, SDS, pricing, and fulfillment workflow

Safety & Handling

Handling & Storage

  • Keep container tightly closed and dry.
  • Store in a well-ventilated place.

PPE

Respiratory protection if needed

First Aid

  • Do not give anything to an unconscious person.
  • Rinse mouth with water.

Stability / Reactivity

  • Reactivity.
  • Carbon monoxide, carbon dioxide, silicon oxides.

Disposal

  • Dispose of remaining and non-recyclable solutions to a licensed company.
  • Contact a professional agency with a waste disposal license to handle this substance.
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Fire Fighting

  • If necessary, wear a self-contained breathing apparatus for firefighting.

Accidental Release

  • Do not generate dust when collecting and disposing.
  • Sweep and shovel up.

For supplier-issued SDS, request documentation before handling, storage, shipment, or procurement decisions.

Preliminary Safety Reference

For supplier-issued SDS or COA, submit a documentation request.

Safety Reference / SDS Request

Names & Synonyms / External Identifiers

Chemical Name

Octaphenylcyclotetrasiloxane

Names & Synonyms

Cyclotetrasiloxane, octaphenyl-1,1,3,3,5,5,7,7-OctaphenylcyclotetrasiloxaneCyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaphenyl-Cyclotetrasiloxane, octaphenylCyclotetrasiloxane, 2,2,4,4,6,6,8,8octaphenyl
Show all synonyms
2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocaneOctaphenyltetracyclosiloxaneC48H40O4Si4s12525octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocaneO02311,3,3,5,5,7,7-Octaphenylcyclotetrasiloxane2,2,4,4,6,6,8,8-octa(phenyl)-1,3,5,7,2,4,6,8-tetraoxatetrasilocane2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane #2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetroxatetrasilocane
External Identifiers
EC NUMBER: 208-904-9DSSTOX SUBSTANCE ID: DTXSID5052206WIKIDATA ID: Q26841271
Experimental Spectrum References
13C NMR Spectra1D NMR Spectra1H NMR SpectraATR-IR SpectraFTIR SpectraRaman Spectra

Documentation & Compliance Facts

Compliance Facts

Shipment review: Required

Documentation available by request

Certificate of Analysis (COA): By request

Supplier Safety Data Sheet (SDS): By request

Purity and pack size confirmation: By request

Availability and lead time review: Confirmed by RFQ

Shipment documentation review: By request

For supplier-issued documentation by request, use the RFQ actions on this page.Review preliminary safety reference

What happens after RFQ

  1. 1We review the CAS identity, quantity, and documentation request.
  2. 2We check sourcing options, supplier availability, COA/SDS, purity, pack size, and lead time.
  3. 3We review destination and shipment documentation needs when applicable.
  4. 4We follow up with a quotation or clarification request.

Text Reference Cues

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Non-public related references

Pentacyclo(9.5.1.13,9.15,15.17,13)octasiloxane, 1,3,5,7,9,11,13,15-octaphenyl-CAS 5256-79-1

Non-public references are shown as text only and do not imply equivalence, availability, or shared use.

Catalog navigation

Related Catalog Entries

Other public CAS pages in this catalog. These links support navigation across additional intermediates and do not imply equivalence, availability, or shared use.

CAS 5256-79-1Pentacyclo(9.5.1.13,9.15,15.17,13)octasiloxane, 1,3,5,7,9,11,13,15-octaphenyl-CAS 1002310-00-0Tert-butyl 1-(2-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethylcarbamateCAS 1005174-17-3(E)-3-(2-Propyl-6-(trifluoromethyl)pyridin-3-yl)acrylic acidCAS 1018125-49-92-(3-Cyclopropyl-6-ethyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acidCAS 1018128-07-8Isopropyl 4-chloro-2-methylquinoline-6-carboxylateCAS 1018142-22-76-cyclopropyl-1-(2,2-difluoroethyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acidCAS 1018144-00-72-(3-Cyclopropyl-6-isopropyl-4-(trifluoromethyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid

RFQ questions for CAS 546-56-5

What are the key identifiers for Octaphenylcyclotetrasiloxane (CAS 546-56-5)?

Octaphenylcyclotetrasiloxane is identified by CAS 546-56-5, with molecular formula C48H40O4Si4, molecular weight 793.2, InChIKey VSIKJPJINIDELZ-UHFFFAOYSA-N.

Can I request a COA for CAS 546-56-5?

Yes. Submit an RFQ and specify COA requirements. Lot-specific COA depends on supplier confirmation.

Can I request supplier SDS for Octaphenylcyclotetrasiloxane?

Yes. Supplier SDS can be requested through the RFQ workflow before handling, storage, shipment, or procurement decisions.

Is CAS 546-56-5 available for quotation?

Availability, pack size, lead time, and pricing are confirmed through RFQ.

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