Chemical Properties of Octadecane, 3-ethyl-5-(2-ethylbutyl)- (CAS 55282-12-7)

InChI

InChI=1S/C26H54/c1-6-11-12-13-14-15-16-17-18-19-20-21-26(22-24(7-2)8-3)23-25(9-4)10-5/h24-26H,6-23H2,1-5H3

InChI Key

MFLJAIATZVGFPM-UHFFFAOYSA-N

Formula

C26H54

SMILES

CCCCCCCCCCCCCC(CC(CC)CC)CC(CC)CC

Molecular Weight¹

366.72

CAS

55282-12-7

Other Names

• 3-Ethyl-5-(2'-ethylbutyl)octadecane
• 3-Ethyl-5-(2-ethylbutyl)octadecane

• ω : Acentric Factor.
• C_p,gas : Ideal gas heat capacity (J/mol×K).
• η : Dynamic viscosity (Pa×s).
• 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).
• Δ_vapH : Enthalpy of vaporization at a given temperature (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).
• P_vap : Vapor pressure (kPa).
• 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

Temperature Dependent Properties

Correlations

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[556.10; 1362.31]	J/mol×K	[273.00; 1000.00]	Joback Predicted correlation
Equation			Y = A + B·T + C·T² + D·T³ + E·T⁴ Y is Cp,gas in J/mol×K, T in K
Coefficient A			-2.57920e+01
Coefficient B			2.49160e+00
Coefficient C			-1.40020e-03
Coefficient D			2.96700e-07
Coefficient E			0.00000e+00
Temperature range, min.			273.00
Temperature range, max.			1000.00
Cp,gas	556.10	J/mol×K	273.00	Calculated Property
Cp,gas	693.57	J/mol×K	353.78	Calculated Property
Cp,gas	816.88	J/mol×K	434.56	Calculated Property
Cp,gas	926.97	J/mol×K	515.33	Calculated Property
Cp,gas	1024.77	J/mol×K	596.11	Calculated Property
Cp,gas	1111.22	J/mol×K	676.89	Calculated Property
Cp,gas	1187.26	J/mol×K	757.67	Calculated Property
Cp,gas	1253.83	J/mol×K	838.44	Calculated Property
Cp,gas	1311.87	J/mol×K	919.22	Calculated Property
Cp,gas	1362.31	J/mol×K	1000.00	Calculated Property

Property	Value	Unit	Temperature (K)	Source
η	[0.0044687; 0.0000619]	Pa×s	[337.78; 680.16]	Joback Predicted correlation
Equation			Y = exp(A + B/T + C·ln(T) + D·T^E) Y is η in Pa×s, T in K
Coefficient A			-1.39134e+01
Coefficient B			2.87206e+03
Coefficient C			0.00000e+00
Coefficient D			0.00000e+00
Coefficient E			0.00000e+00
Comment			Liquid phase. Joback/Reid (1987), valid from Tf to 0.7·Tc.
Temperature range, min.			337.78
Temperature range, max.			680.16
η	0.0044687	Pa×s	337.78	Calculated Property
η	0.0018897	Pa×s	375.82	Calculated Property
η	0.0009361	Pa×s	413.86	Calculated Property
η	0.0005219	Pa×s	451.91	Calculated Property
η	0.0003186	Pa×s	489.95	Calculated Property
η	0.0002089	Pa×s	527.99	Calculated Property
η	0.0001449	Pa×s	566.03	Calculated Property
η	0.0001053	Pa×s	604.08	Calculated Property
η	0.0000794	Pa×s	642.12	Calculated Property
η	0.0000619	Pa×s	680.16	Calculated Property

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 202.64]	kPa	[528.28; 701.38]	The Yaws Handbook of Vapor Pressure
Equation			ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K
Coefficient A			1.68219e+01
Coefficient B			-6.55756e+03
Coefficient C			-1.31677e+02
Temperature range, min.			528.28
Temperature range, max.			701.38
Pvap	1.33	kPa	528.28	Calculated Property
Pvap	2.86	kPa	547.51	Calculated Property
Pvap	5.75	kPa	566.75	Calculated Property
Pvap	10.89	kPa	585.98	Calculated Property
Pvap	19.57	kPa	605.21	Calculated Property
Pvap	33.59	kPa	624.45	Calculated Property
Pvap	55.38	kPa	643.68	Calculated Property
Pvap	88.06	kPa	662.91	Calculated Property
Pvap	135.54	kPa	682.15	Calculated Property
Pvap	202.64	kPa	701.38	Calculated Property

Similar Compounds

Find more compounds similar to Octadecane, 3-ethyl-5-(2-ethylbutyl)-.

Sources

• Cheméo Relay (1.0)
• Crippen Method
• Crippen Method
• Joback Method
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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