ABSTRACT

Molar heat capacities of the linear alcohols 1-hexanol (C6H14O), 1-heptanol (C7H16O), 1-octanol (C8H18O), and 1-decanol (C10H22O) were measured from 5 K to 390 K. The derived thermodynamic functions Sabs,m(T) and Hm(T) - Hm(0) were calculated. Including earlier published data, a correlation for the heat capacity of the liquid 1-alcohols with the carbon number n in the chain ranging between 6 and 22 was fitted. The molar heat capacities of the liquid alcohols can be described by Cp,l(n,T)/J7K-17mol-1 = -3163.5 + 21.0156n + 0.04223nT + 9.89055T + 322705.7/T - 0.0093225T2, with the mean absolute percentage deviation being 0.22%. The correlation for the absolute entropy is S(360 K,n) = (111.86 + 38.613n) J7K-17mol-1.

Compounds

#	Formula	Name
1	C6H14O	hexan-1-ol
2	C7H16O	heptan-1-ol
3	C8H18O	octan-1-ol
4	C10H22O	decan-1-ol

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Gas	ADIACA:UFactor:2	1
POMD	1	Triple point temperature, K ; Crystal			Crystal Liquid Gas	ADIACA:UFactor:2	1
POMD	1	Molar heat capacity at saturation pressure, J/K/mol ; Crystal	Temperature, K; Crystal		Crystal Gas	VADIAC:UFactor:2	110
POMD	1	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Temperature, K; Liquid		Liquid Gas	VADIAC:UFactor:2	89
POMD	1	Molar heat capacity at saturation pressure, J/K/mol ; Crystal	Temperature, K; Crystal		Crystal Gas	VADIAC:UFactor:2	23
POMD	1	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Temperature, K; Liquid		Liquid Gas	VADIAC:UFactor:2	18
POMD	1	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	VADIAC:UFactor:2	23
POMD	1	Molar enthalpy, kJ/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VADIAC:UFactor:2	18
POMD	1	Molar entropy, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	VADIAC:UFactor:2	23
POMD	1	Molar entropy, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VADIAC:UFactor:2	18
POMD	2	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Gas	ADIACA:UFactor:2	1
POMD	2	Triple point temperature, K ; Crystal			Crystal Liquid Gas	ADIACA:UFactor:2	1
POMD	2	Molar heat capacity at saturation pressure, J/K/mol ; Crystal	Temperature, K; Crystal		Crystal Gas	VADIAC:UFactor:2	108
POMD	2	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Temperature, K; Liquid		Liquid Gas	VADIAC:UFactor:2	75
POMD	2	Molar heat capacity at saturation pressure, J/K/mol ; Crystal	Temperature, K; Crystal		Crystal Gas	VADIAC:UFactor:2	24
POMD	2	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Temperature, K; Liquid		Liquid Gas	VADIAC:UFactor:2	15
POMD	2	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	VADIAC:UFactor:2	24
POMD	2	Molar enthalpy, kJ/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VADIAC:UFactor:2	15
POMD	2	Molar entropy, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	VADIAC:UFactor:2	24
POMD	2	Molar entropy, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VADIAC:UFactor:2	15
POMD	3	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Gas	ADIACA:UFactor:2	1
POMD	3	Triple point temperature, K ; Crystal			Crystal Liquid Gas	ADIACA:UFactor:2	1
POMD	3	Molar heat capacity at saturation pressure, J/K/mol ; Crystal	Temperature, K; Crystal		Crystal Gas	VADIAC:UFactor:2	135
POMD	3	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Temperature, K; Liquid		Liquid Gas	VADIAC:UFactor:2	67
POMD	3	Molar heat capacity at saturation pressure, J/K/mol ; Crystal	Temperature, K; Crystal		Crystal Gas	VADIAC:UFactor:2	26
POMD	3	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Temperature, K; Liquid		Liquid Gas	VADIAC:UFactor:2	16
POMD	3	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	VADIAC:UFactor:2	26
POMD	3	Molar enthalpy, kJ/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VADIAC:UFactor:2	16
POMD	3	Molar entropy, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	VADIAC:UFactor:2	26
POMD	3	Molar entropy, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VADIAC:UFactor:2	16
POMD	4	Molar enthalpy of transition or fusion, kJ/mol ; Crystal			Crystal Liquid Gas	ADIACA:UFactor:2	1
POMD	4	Triple point temperature, K ; Crystal			Crystal Liquid Gas	ADIACA:UFactor:2	1
POMD	4	Molar heat capacity at saturation pressure, J/K/mol ; Crystal	Temperature, K; Crystal		Crystal Gas	VADIAC:UFactor:2	139
POMD	4	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Temperature, K; Liquid		Liquid Gas	VADIAC:UFactor:2	50
POMD	4	Molar heat capacity at saturation pressure, J/K/mol ; Crystal	Temperature, K; Crystal		Crystal Gas	VADIAC:UFactor:2	28
POMD	4	Molar heat capacity at saturation pressure, J/K/mol ; Liquid	Temperature, K; Liquid		Liquid Gas	VADIAC:UFactor:2	12
POMD	4	Molar enthalpy, kJ/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	VADIAC:UFactor:2	28
POMD	4	Molar enthalpy, kJ/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VADIAC:UFactor:2	12
POMD	4	Molar entropy, J/K/mol ; Crystal	Temperature, K; Crystal	Pressure, kPa; Crystal	Crystal	VADIAC:UFactor:2	28
POMD	4	Molar entropy, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VADIAC:UFactor:2	12

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Heat Capacities and Derived Thermodynamic Functions of 1-Hexanol, 1-Heptanol, 1-Octanol, and 1-Decanol between 5 K and 390 K

Miltenburg, J. C.[J. C. van], Gabrielova, H.[Hana], Ruzicka, K.[Kvetoslav]

ABSTRACT