Chemical Properties of 17-Octadecynoic acid (CAS 34450-18-5)

InChI

InChI=1S/C18H32O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h1H,3-17H2,(H,19,20)

InChI Key

DZIILFGADWDKMF-UHFFFAOYSA-N

Formula

C18H32O2

SMILES

C#CCCCCCCCCCCCCCCCC(=O)O

Molecular Weight¹

280.45

CAS

34450-18-5

• C_p,gas : Ideal gas heat capacity (J/mol×K).
• 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_fusH : Enthalpy of fusion at a given temperature (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (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).
• 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
ΔfG°	58.01	kJ/mol	Joback Calculated Property
ΔfH°gas	-387.76	kJ/mol	Joback Calculated Property
ΔfusH°	51.04	kJ/mol	Joback Calculated Property
ΔvapH°	78.95	kJ/mol	Joback Calculated Property
log10WS	-6.25		Crippen Calculated Property
logPoct/wat	5.556		Crippen Calculated Property
McVol	263.320	ml/mol	McGowan Calculated Property
Pc	1431.55	kPa	Joback Calculated Property
Inp	[2199.30; 2199.30]
Inp	2199.30		NIST
Inp	2199.30		NIST
Tboil	747.41	K	Joback Calculated Property
Tc	922.67	K	Joback Calculated Property
Tfus	450.34	K	Joback Calculated Property
Vc	1.030	m3/kmol	Joback Calculated Property

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[782.95; 867.77]	J/mol×K	[747.41; 922.67]
Cp,gas	782.95	J/mol×K	747.41	Joback Calculated Property
Cp,gas	798.88	J/mol×K	776.62	Joback Calculated Property
Cp,gas	814.04	J/mol×K	805.83	Joback Calculated Property
Cp,gas	828.48	J/mol×K	835.04	Joback Calculated Property
Cp,gas	842.23	J/mol×K	864.25	Joback Calculated Property
Cp,gas	855.32	J/mol×K	893.46	Joback Calculated Property
Cp,gas	867.77	J/mol×K	922.67	Joback Calculated Property
ΔfusH	54.20	kJ/mol	340.00	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 202.53]	kPa	[547.15; 744.15]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.57549e+01
Coefficient B			-6.33546e+03
Coefficient C			-1.37536e+02
Temperature range, min.			547.15
Temperature range, max.			744.15
Pvap	1.33	kPa	547.15	Calculated Property
Pvap	2.92	kPa	569.04	Calculated Property
Pvap	5.94	kPa	590.93	Calculated Property
Pvap	11.30	kPa	612.82	Calculated Property
Pvap	20.32	kPa	634.71	Calculated Property
Pvap	34.79	kPa	656.59	Calculated Property
Pvap	57.00	kPa	678.48	Calculated Property
Pvap	89.89	kPa	700.37	Calculated Property
Pvap	136.99	kPa	722.26	Calculated Property
Pvap	202.53	kPa	744.15	Calculated Property

Similar Compounds

Find more compounds similar to 17-Octadecynoic acid.

Sources

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

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