Chemical Properties of Cyclic octaatomic sulfur (CAS 10544-50-0)

InChI

InChI=1S/S8/c1-2-4-6-8-7-5-3-1

InChI Key

JLQNHALFVCURHW-UHFFFAOYSA-N

Formula

S8

SMILES

S1SSSSSSS1

Molecular Weight¹

256.52

CAS

10544-50-0

Other Names

• Cyclooctasulphur
• Octasulfur
• Octathiocane
• Orthorhombic sulfur
• S8
• Sulfur
• Sulfur (S8)
• Sulfur molecule (S8)
• Sulfur octamer
• Sulfur, mol. (S8)
• cyclooctasulfur
• sulfur, octatomic

• C_p,gas : Ideal gas heat capacity (J/mol×K).
• EA : Electron affinity (eV).
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fusH° : Enthalpy of fusion at standard conditions (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• IE : Ionization energy (eV).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• P_c : Critical Pressure (kPa).
• I_np : Non-polar retention indices.
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• V_c : Critical Volume (m³/kmol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
EA	3.59 ± 0.05	eV	NIST
ΔfG°	275.96	kJ/mol	Joback Calculated Property
ΔfH°gas	381.09	kJ/mol	Joback Calculated Property
ΔfusH°	11.58	kJ/mol	Joback Calculated Property
ΔvapH°	63.17	kJ/mol	Joback Calculated Property
IE	[7.30; 9.60]	eV
IE	9.30 ± 0.20	eV	NIST
IE	9.04 ± 0.03	eV	NIST
IE	9.60 ± 0.20	eV	NIST
IE	Outlier 7.30 ± 0.30	eV	NIST
IE	9.40	eV	NIST
IE	9.23	eV	NIST
log10WS	-6.71		Crippen Calculated Property
logPoct/wat	5.186		Crippen Calculated Property
McVol	130.800	ml/mol	McGowan Calculated Property
Pc	10454.96	kPa	Joback Calculated Property
Inp	[342.96; 2083.20]
Inp	2083.20		NIST
Inp	1998.00		NIST
Inp	2004.00		NIST
Inp	2055.00		NIST
Inp	342.96		NIST
Inp	1998.00		NIST
Inp	342.96		NIST
Tboil	614.80	K	Joback Calculated Property
Tc	1027.34	K	Joback Calculated Property
Tfus	761.94	K	Joback Calculated Property
Vc	0.322	m3/kmol	Joback Calculated Property

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[193.05; 212.49]	J/mol×K	[614.80; 1027.34]
Cp,gas	193.05	J/mol×K	614.80	Joback Calculated Property
Cp,gas	198.25	J/mol×K	683.56	Joback Calculated Property
Cp,gas	202.57	J/mol×K	752.31	Joback Calculated Property
Cp,gas	206.08	J/mol×K	821.07	Joback Calculated Property
Cp,gas	208.85	J/mol×K	889.83	Joback Calculated Property
Cp,gas	210.97	J/mol×K	958.59	Joback Calculated Property
Cp,gas	212.49	J/mol×K	1027.34	Joback Calculated Property

Similar Compounds

Find more compounds similar to Cyclic octaatomic sulfur.

Mixtures

• Toluene + Cyclic octaatomic sulfur
• Cyclic octaatomic sulfur + Ethylbenzene
• Cyclic octaatomic sulfur + Naphthalene, 1,2,3,4-tetrahydro-
• Styrene + Cyclic octaatomic sulfur
• Cyclic octaatomic sulfur + Benzene, chloro-
• Benzene + Cyclic octaatomic sulfur
• Cyclic octaatomic sulfur + Cyclohexene
• Cyclic octaatomic sulfur + Cyclohexane
• n-Hexane + Cyclic octaatomic sulfur
• Benzene, 1,2-dichloro- + Cyclic octaatomic sulfur + Benzene, chloro-

Sources

• Crippen Method
• Crippen Method
• Solubility of elemental sulfur in pure organic solvents and organic solvent-ionic liquid mixtures from 293.15 to 353.15 K
• Measurement and Correlation of the Solubilities of Sulfur S8 in 10 Solvents
• Solubility of Elemental Sulfur in Toluene between (267.15 and 313.15) K under Atmospheric Pressure
• Joback Method
• McGowan Method
• NIST Webbook

Note: Cheméo is only indexing the data, follow the source links to retrieve the latest data. The source is also providing more information like the publication year, authors and more. Take the time to validate and double check the source of the data.
Outlier This icon means that the value is more than 2 standard deviations away from the property mean.