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

366.71

CAS

55282-12-7

Other Names

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

• 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).
• 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

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[1217.46; 1345.27]	J/mol×K	[792.96; 971.41]
T(K) Ideal gas heat capacity (J/mol×K) 1220 1240 1260 1280 1300 1320 1340 800 850 900 950
Cp,gas	1217.46	J/mol×K	792.96	Joback Calculated Property
Cp,gas	1241.56	J/mol×K	822.70	Joback Calculated Property
Cp,gas	1264.47	J/mol×K	852.44	Joback Calculated Property
Cp,gas	1286.26	J/mol×K	882.19	Joback Calculated Property
Cp,gas	1306.95	J/mol×K	911.93	Joback Calculated Property
Cp,gas	1326.61	J/mol×K	941.67	Joback Calculated Property
Cp,gas	1345.27	J/mol×K	971.41	Joback Calculated Property
η	[0.0000339; 0.0044687]	Pa×s	[337.78; 792.96]
T(K) Dynamic viscosity (Pa×s) 0 1.00e-3 2.00e-3 3.00e-3 4.00e-3 400 600 800
η	0.0044687	Pa×s	337.78	Joback Calculated Property
η	0.0009396	Pa×s	413.64	Joback Calculated Property
η	0.0003203	Pa×s	489.51	Joback Calculated Property
η	0.0001458	Pa×s	565.37	Joback Calculated Property
η	0.0000799	Pa×s	641.23	Joback Calculated Property
η	0.0000498	Pa×s	717.10	Joback Calculated Property
η	0.0000339	Pa×s	792.96	Joback Calculated Property
ΔvapH	88.40	kJ/mol	485.00	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 202.64]	kPa	[528.28; 701.38]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
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
T(K) Vapor pressure (kPa) 0 50 100 150 200 550 600 650 700
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

• Crippen Method
• Crippen Method
• Joback Method
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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