Chemical Properties of Octaphenylcyclotetrasiloxane (CAS 546-56-5)

InChI

InChI=1S/C48H40O4Si4/c1-9-25-41(26-10-1)53(42-27-11-2-12-28-42)49-54(43-29-13-3-14-30-43,44-31-15-4-16-32-44)51-56(47-37-21-7-22-38-47,48-39-23-8-24-40-48)52-55(50-53,45-33-17-5-18-34-45)46-35-19-6-20-36-46/h1-40H

InChI Key

VSIKJPJINIDELZ-UHFFFAOYSA-N

Formula

C48H40O4Si4

SMILES

c1ccc([Si]2(c3ccccc3)O[Si](c3ccccc3)(c3ccccc3)O[Si](c3ccccc3)(c3ccccc3)O[Si](c3ccccc3)(c3ccccc3)O2)cc1

Molecular Weight¹

793.17

CAS

546-56-5

Other Names

• Cyclotetrasiloxane, octaphenyl-
• Octaphenyltetracyclosiloxane
• 1,1,3,3,5,5,7,7-Octaphenylcyclotetrasiloxane
• CO9817
• 2,4,6,8-tetradiphenyl-[1,3,5,7,2,4,6,8]cyclotetrasiloxane

• C_p,solid : Solid phase heat capacity (J/mol×K).
• Δ_fusH : Enthalpy of fusion at a given temperature (kJ/mol).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• I_np : Non-polar retention indices.
• S°_{solid,1 bar} : Solid phase molar entropy at standard conditions (J/mol×K).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
log10WS	-35.35		Crippen Calculated Property
logPoct/wat	5.093		Crippen Calculated Property
Inp	[4483.00; 4483.00]
Inp	4483.00		NIST
Inp	4483.00		NIST
S°solid,1 bar	1044.00	J/mol×K	NIST

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,solid	932.50	J/mol×K	298.15	NIST
ΔfusH	[1.13; 1.95]	kJ/mol	[473.20; 478.10]
ΔfusH	1.26	kJ/mol	473.20	NIST
ΔfusH	1.13	kJ/mol	475.00	NIST
ΔfusH	1.95	kJ/mol	478.10	NIST

Similar Compounds

Find more compounds similar to Octaphenylcyclotetrasiloxane.

Sources

• Crippen Method
• Crippen Method
• NIST Webbook

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