Chemical Properties of Heptanoic acid (CAS 111-14-8)

InChI

InChI=1S/C7H14O2/c1-2-3-4-5-6-7(8)9/h2-6H2,1H3,(H,8,9)

InChI Key

MNWFXJYAOYHMED-UHFFFAOYSA-N

Formula

C7H14O2

SMILES

CCCCCCC(=O)O

Molecular Weight¹

130.18

CAS

111-14-8

Other Names

• 1-Heptanoic acid
• 1-Hexanecarboxylic acid
• Enanthylic acid
• Hepthlic acid
• Heptoic acid
• Hexacid C-7
• N-OENANTHIC ACID
• NSC 2192
• Oenanthic acid
• Oenanthylic acid
• enanthic acid
• heptylic acid
• n-Heptanoic acid
• n-Heptoic acid
• n-Heptylic acid

• ω : Acentric Factor.
• Δ_cH°_liquid : Standard liquid enthalpy of combustion (kJ/mol).
• C_p,gas : Ideal gas heat capacity (J/mol×K).
• C_p,liquid : Liquid phase 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_fH°_liquid : Liquid phase 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).
• 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).
• n₀ : Refractive Index.
• ρ_l : Liquid Density (kg/m³).
• I_np : Non-polar retention indices.
• I_p : Polar retention indices.
• S°_liquid : Liquid phase molar entropy at standard conditions (J/mol×K).
• γ : Surface Tension (N/m).
• T_boil : Normal Boiling Point Temperature (K).
• T_boilr : Boiling point at reduced pressure (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• T_triple : Triple Point Temperature (K).
• V_c : Critical Volume (m³/kmol).
• Z_c : Critical Compressibility.
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ω	0.7297		PSRK revision IV (2005), critical constants and acentric factors of 1000 components Compiled value
ΔcH°liquid	[-4146.90; -4144.00]	kJ/mol
ΔcH°liquid	-4146.90 ± 0.90	kJ/mol	NIST
ΔcH°liquid	-4144.00 ± 0.59	kJ/mol	NIST
ΔfG°	-335.85	kJ/mol	Joback Calculated Property
ΔfH°gas	[-539.50; -536.50]	kJ/mol
ΔfH°gas	-536.50 ± 1.70	kJ/mol	NIST
ΔfH°gas	-539.50 ± 1.60	kJ/mol	NIST
ΔfH°gas	-539.50 ± 1.60	kJ/mol	NIST
ΔfH°liquid	[-611.49; -608.50]	kJ/mol
ΔfH°liquid	-608.50 ± 0.90	kJ/mol	NIST
ΔfH°liquid	-611.49 ± 0.59	kJ/mol	NIST
ΔfusH°	24.03	kJ/mol	Joback Calculated Property
ΔvapH°	[72.00; 75.70]	kJ/mol
ΔvapH°	72.90 ± 0.80	kJ/mol	NIST
ΔvapH°	75.70	kJ/mol	NIST
ΔvapH°	72.00 ± 1.50	kJ/mol	NIST
ΔvapH°	72.00 ± 1.50	kJ/mol	NIST
IE	10.18	eV	Relay (1.0) Calculated Property
log10WS	-1.80		Relay (1.0) Calculated Property
logPoct/wat	2.041		Crippen Calculated Property
McVol	116.930	ml/mol	McGowan Calculated Property
Pc	[2829.63; 3161.00]	kPa
Pc	3160.00	kPa	IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 7 Compiled value
Pc	2877.63	kPa	PSRK revision IV (2005), critical constants and acentric factors of 1000 components Compiled value
Pc	3161.00 ± 80.00	kPa	NIST
Pc	2880.00 ± 100.00	kPa	NIST
Pc	2829.63 ± 90.00	kPa	NIST
Inp	[176.75; 1112.00]
Inp	1083.00		NIST
Inp	1065.00		NIST
Inp	1083.00		NIST
Inp	1078.00		NIST
Inp	1076.00		NIST
Inp	1078.00		NIST
Inp	1091.00		NIST
Inp	1068.00		NIST
Inp	1071.00		NIST
Inp	1080.00		NIST
Inp	1083.00		NIST
Inp	1074.00		NIST
Inp	1103.00		NIST
Inp	1073.00		NIST
Inp	1076.00		NIST
Inp	1109.00		NIST
Inp	1062.00		NIST
Inp	1085.00		NIST
Inp	1085.00		NIST
Inp	1063.00		NIST
Inp	1112.00		NIST
Inp	1098.00		NIST
Inp	1078.00		NIST
Inp	1097.00		NIST
Inp	1051.00		NIST
Inp	1091.00		NIST
Inp	1092.00		NIST
Inp	1064.00		NIST
Inp	1091.00		NIST
Inp	1098.00		NIST
Inp	1083.00		NIST
Inp	1073.00		NIST
Inp	1073.00		NIST
Inp	1078.00		NIST
Inp	1073.00		NIST
Inp	1108.00		NIST
Inp	1065.00		NIST
Inp	1076.00		NIST
Inp	1049.00		NIST
Inp	1067.00		NIST
Inp	1083.00		NIST
Inp	1069.00		NIST
Inp	1078.00		NIST
Inp	1078.00		NIST
Inp	1080.00		NIST
Inp	1070.00		NIST
Inp	Outlier 176.75		NIST
Inp	Outlier 177.80		NIST
Inp	1065.00		NIST
Inp	Outlier 176.75		NIST
Ip	[1900.00; 2000.00]
Ip	1960.00		NIST
Ip	1930.00		NIST
Ip	1946.00		NIST
Ip	1950.00		NIST
Ip	1967.00		NIST
Ip	1918.00		NIST
Ip	1971.00		NIST
Ip	1947.00		NIST
Ip	1918.00		NIST
Ip	1956.00		NIST
Ip	1965.00		NIST
Ip	1968.00		NIST
Ip	Outlier 1997.00		NIST
Ip	1965.00		NIST
Ip	1966.00		NIST
Ip	1965.00		NIST
Ip	1954.00		NIST
Ip	1953.00		NIST
Ip	1953.00		NIST
Ip	1943.00		NIST
Ip	1950.00		NIST
Ip	1916.00		NIST
Ip	1939.00		NIST
Ip	1946.00		NIST
Ip	1936.00		NIST
Ip	1958.00		NIST
Ip	1915.00		NIST
Ip	1934.00		NIST
Ip	1927.00		NIST
Ip	1924.00		NIST
Ip	1932.00		NIST
Ip	1962.00		NIST
Ip	1962.00		NIST
Ip	1986.00		NIST
Ip	1988.00		NIST
Ip	1927.00		NIST
Ip	1949.00		NIST
Ip	1934.00		NIST
Ip	1970.00		NIST
Ip	1968.00		NIST
Ip	1955.00		NIST
Ip	1976.00		NIST
Ip	1972.00		NIST
Ip	1962.00		NIST
Ip	Outlier 2000.00		NIST
Ip	1963.00		NIST
Ip	1952.00		NIST
Ip	1957.00		NIST
Ip	1957.00		NIST
Ip	1981.00		NIST
Ip	1958.00		NIST
Ip	1962.00		NIST
Ip	Outlier 1904.00		NIST
Ip	Outlier 1900.00		NIST
Ip	1941.00		NIST
Ip	1950.00		NIST
Ip	1935.00		NIST
Ip	Outlier 1900.00		NIST
Ip	1923.00		NIST
Ip	1933.00		NIST
Ip	1930.00		NIST
Ip	1925.00		NIST
Ip	1950.00		NIST
Ip	1956.00		NIST
Ip	1936.00		NIST
Ip	1966.00		NIST
Ip	1965.00		NIST
Ip	1975.00		NIST
Ip	1963.00		NIST
Ip	1990.00		NIST
Ip	1952.00		NIST
Ip	1950.00		NIST
Ip	1955.00		NIST
Ip	1976.00		NIST
Ip	1924.00		NIST
Ip	1928.00		NIST
Ip	1913.00		NIST
Ip	1918.00		NIST
Ip	1977.00		NIST
Ip	1925.00		NIST
Ip	1942.00		NIST
Ip	1963.00		NIST
Ip	1916.00		NIST
Ip	1935.00		NIST
Ip	1952.00		NIST
Ip	1928.00		NIST
Ip	1942.00		NIST
Ip	1960.00		NIST
Ip	1918.00		NIST
Ip	1965.00		NIST
Ip	1950.00		NIST
Ip	1946.00		NIST
Ip	1927.00		NIST
Ip	1932.00		NIST
Ip	1955.00		NIST
Ip	1963.00		NIST
Ip	1958.00		NIST
Ip	1930.00		NIST
Ip	1966.00		NIST
S°liquid	323.35	J/mol×K	NIST
Tboil	[491.65; 497.15]	K
Tboil	496.20	K	NIST
Tboil	496.65 ± 1.50	K	NIST
Tboil	495.05 ± 1.00	K	NIST
Tboil	496.65 ± 2.00	K	NIST
Tboil	493.15 ± 2.00	K	NIST
Tboil	495.15 ± 1.00	K	NIST
Tboil	Outlier 492.15 ± 2.00	K	NIST
Tboil	496.15 ± 0.60	K	NIST
Tboil	496.16 ± 0.40	K	NIST
Tboil	497.15 ± 1.50	K	NIST
Tboil	495.60 ± 0.70	K	NIST
Tboil	495.15 ± 2.00	K	NIST
Tboil	496.15 ± 2.00	K	NIST
Tboil	496.15 ± 2.00	K	NIST
Tboil	494.65 ± 2.00	K	NIST
Tboil	493.65 ± 2.00	K	NIST
Tboil	496.65 ± 3.00	K	NIST
Tboil	494.45 ± 2.00	K	NIST
Tboil	Outlier 491.65 ± 4.00	K	NIST
Tboil	495.70 ± 2.00	K	NIST
Tboil	496.15 ± 1.50	K	NIST
Tboil	495.40 ± 1.50	K	NIST
Tboil	496.40 ± 3.00	K	NIST
Tc	[677.80; 683.52]	K
Tc	678.00	K	IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 7 Compiled value
Tc	679.00	K	PSRK revision IV (2005), critical constants and acentric factors of 1000 components Compiled value
Tc	677.80 ± 2.00	K	NIST
Tc	679.00 ± 1.00	K	NIST
Tc	683.52 ± 3.00	K	NIST
Tfus	[263.00; 266.00]	K
Tfus	265.40	K	Jean-Claude Bradley Open Melting Point Dataset (2014, CC0) Compiled value
Tfus	266.00 ± 0.05	K	NIST
Tfus	265.69 ± 0.30	K	NIST
Tfus	266.00 ± 2.00	K	NIST
Tfus	263.00 ± 2.00	K	NIST
Tfus	264.00 ± 2.00	K	NIST
Ttriple	[265.83; 265.83]	K
Ttriple	265.83 ± 0.02	K	NIST
Ttriple	265.83 ± 0.02	K	NIST
Vc	[0.466; 0.468]	m3/kmol
Vc	0.468	m3/kmol	IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 7 Compiled value
Vc	0.466	m3/kmol	PSRK revision IV (2005), critical constants and acentric factors of 1000 components Compiled value
Zc	0.2620000		IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 7 Compiled value

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,liquid	[265.43; 267.31]	J/mol×K	[298.15; 298.15]
Cp,liquid	267.31	J/mol×K	298.15	NIST
Cp,liquid	265.43	J/mol×K	298.15	NIST
ΔfusH	15.44	kJ/mol	265.80	NIST
ΔvapH	[68.30; 76.00]	kJ/mol	[266.00; 433.00]
ΔvapH	76.00	kJ/mol	266.00	NIST
ΔvapH	72.50 ± 0.80	kJ/mol	305.50	NIST
ΔvapH	68.30	kJ/mol	423.00	NIST
ΔvapH	69.00	kJ/mol	433.00	NIST
Pvap	[4.70; 27.67]	kPa	[413.48; 453.80]
Pvap	4.70	kPa	413.48	Subatmospheric Vapor Pressure Curves for Propionic Acid, Butyric Acid, Isobutyric Acid, Valeric Acid, Isovaleric Acid, Hexanoic Acid, and Heptanoic Acid
Pvap	8.63	kPa	426.48	Subatmospheric Vapor Pressure Curves for Propionic Acid, Butyric Acid, Isobutyric Acid, Valeric Acid, Isovaleric Acid, Hexanoic Acid, and Heptanoic Acid
Pvap	12.56	kPa	435.07	Subatmospheric Vapor Pressure Curves for Propionic Acid, Butyric Acid, Isobutyric Acid, Valeric Acid, Isovaleric Acid, Hexanoic Acid, and Heptanoic Acid
Pvap	16.57	kPa	441.33	Subatmospheric Vapor Pressure Curves for Propionic Acid, Butyric Acid, Isobutyric Acid, Valeric Acid, Isovaleric Acid, Hexanoic Acid, and Heptanoic Acid
Pvap	20.63	kPa	446.40	Subatmospheric Vapor Pressure Curves for Propionic Acid, Butyric Acid, Isobutyric Acid, Valeric Acid, Isovaleric Acid, Hexanoic Acid, and Heptanoic Acid
Pvap	24.65	kPa	451.00	Subatmospheric Vapor Pressure Curves for Propionic Acid, Butyric Acid, Isobutyric Acid, Valeric Acid, Isovaleric Acid, Hexanoic Acid, and Heptanoic Acid
Pvap	27.67	kPa	453.80	Subatmospheric Vapor Pressure Curves for Propionic Acid, Butyric Acid, Isobutyric Acid, Valeric Acid, Isovaleric Acid, Hexanoic Acid, and Heptanoic Acid
n0	[1.41720; 1.41750]		[293.15; 295.10]
n0	1.41720		293.15	Vapour-liquid equilibrium of propionic acid + caproic acid, isobutyric acid + caproic acid, valeric acid + caproic acid and caproic acid + enanthoic acid binary mixtures
n0	1.41750		295.10	Ternary Liquid-Liquid Equilibria of Acetonitrile and Water with Heptanoic Acid and Nonanol at 323.15 K and 1 atm
ρl	[803.40; 920.60]	kg/m3	[290.30; 427.70]
ρl	920.60	kg/m3	290.30	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
ρl	917.65	kg/m3	293.15	Influence of alkyl group and temperature on thermophysical properties of carboxylic acid and their binary mixtures
ρl	917.70	kg/m3	293.15	Effect of temperature on density, sound velocity, refractive index and their derived properties for the binary systems (heptanoic acid + propanoic or butanoic acids)
ρl	913.47	kg/m3	298.15	Influence of alkyl group and temperature on thermophysical properties of carboxylic acid and their binary mixtures
ρl	918.00	kg/m3	298.15	Physico-Chemical Properties of Non-Newtonian Shear Thickening Diisopropyl-ethylammonium-Based Protic Ionic Liquids and Their Mixtures with Water and Acetonitrile
ρl	913.50	kg/m3	298.15	Effect of temperature on density, sound velocity, refractive index and their derived properties for the binary systems (heptanoic acid + propanoic or butanoic acids)
ρl	909.30	kg/m3	303.15	Effect of temperature on density, sound velocity, refractive index and their derived properties for the binary systems (heptanoic acid + propanoic or butanoic acids)
ρl	909.29	kg/m3	303.15	Influence of alkyl group and temperature on thermophysical properties of carboxylic acid and their binary mixtures
ρl	905.70	kg/m3	308.00	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
ρl	905.11	kg/m3	308.15	Influence of alkyl group and temperature on thermophysical properties of carboxylic acid and their binary mixtures
ρl	905.10	kg/m3	308.15	Effect of temperature on density, sound velocity, refractive index and their derived properties for the binary systems (heptanoic acid + propanoic or butanoic acids)
ρl	900.94	kg/m3	313.15	Influence of alkyl group and temperature on thermophysical properties of carboxylic acid and their binary mixtures
ρl	900.90	kg/m3	313.15	Effect of temperature on density, sound velocity, refractive index and their derived properties for the binary systems (heptanoic acid + propanoic or butanoic acids)
ρl	893.00	kg/m3	323.10	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
ρl	880.40	kg/m3	338.10	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
ρl	867.80	kg/m3	353.10	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
ρl	855.40	kg/m3	367.10	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
ρl	842.30	kg/m3	383.20	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
ρl	829.40	kg/m3	397.90	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
ρl	816.60	kg/m3	412.90	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
ρl	803.40	kg/m3	427.70	Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K

Pressure Dependent Properties

Correlations

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[167.60; 391.25]	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			1.12500e+00
Coefficient B			7.19620e-01
Coefficient C			-4.29600e-04
Coefficient D			1.00100e-07
Coefficient E			0.00000e+00
Temperature range, min.			273.00
Temperature range, max.			1000.00
Cp,gas	167.60	J/mol×K	273.00	Calculated Property
Cp,gas	206.37	J/mol×K	353.78	Calculated Property
Cp,gas	240.93	J/mol×K	434.56	Calculated Property
Cp,gas	271.58	J/mol×K	515.33	Calculated Property
Cp,gas	298.64	J/mol×K	596.11	Calculated Property
Cp,gas	322.44	J/mol×K	676.89	Calculated Property
Cp,gas	343.28	J/mol×K	757.67	Calculated Property
Cp,gas	361.48	J/mol×K	838.44	Calculated Property
Cp,gas	377.37	J/mol×K	919.22	Calculated Property
Cp,gas	391.25	J/mol×K	1000.00	Calculated Property

Property	Value	Unit	Temperature (K)	Source
η	[0.0063138; 0.0003457]	Pa×s	[265.01; 475.62]	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			-1.16250e+01
Coefficient B			1.73850e+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.			265.01
Temperature range, max.			475.62
η	0.0063138	Pa×s	265.01	Calculated Property
η	0.0037079	Pa×s	288.42	Calculated Property
η	0.0023587	Pa×s	311.82	Calculated Property
η	0.0015982	Pa×s	335.22	Calculated Property
η	0.0011394	Pa×s	358.62	Calculated Property
η	0.0008466	Pa×s	382.02	Calculated Property
η	0.0006511	Pa×s	405.42	Calculated Property
η	0.0005152	Pa×s	428.82	Calculated Property
η	0.0004177	Pa×s	452.22	Calculated Property
η	0.0003457	Pa×s	475.62	Calculated Property

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 202.64]	kPa	[385.47; 521.65]	The Yaws Handbook of Vapor Pressure
Equation			ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K
Coefficient A			1.49666e+01
Coefficient B			-3.84187e+03
Coefficient C			-1.23742e+02
Temperature range, min.			385.47
Temperature range, max.			521.65
Pvap	1.33	kPa	385.47	Calculated Property
Pvap	2.97	kPa	400.60	Calculated Property
Pvap	6.10	kPa	415.73	Calculated Property
Pvap	11.67	kPa	430.86	Calculated Property
Pvap	21.00	kPa	445.99	Calculated Property
Pvap	35.85	kPa	461.13	Calculated Property
Pvap	58.45	kPa	476.26	Calculated Property
Pvap	91.53	kPa	491.39	Calculated Property
Pvap	138.35	kPa	506.52	Calculated Property
Pvap	202.64	kPa	521.65	Calculated Property
Pvap	[6.40e-06; 3122.82]	kPa	[265.83; 680.00]	KDB Vapor Pressure Data
Equation			ln(Y) = A + B/T + C·ln(T) + D·T² + E/T² Y is Pvap in kPa, T in K
Coefficient A			3.31594e+02
Coefficient B			-2.35518e+04
Coefficient C			-4.59654e+01
Coefficient D			2.35250e-05
Coefficient E			0.00000e+00
Temperature range, min.			265.83
Temperature range, max.			680.00
Pvap	6.40e-06	kPa	265.83	Calculated Property
Pvap	3.70e-03	kPa	311.85	Calculated Property
Pvap	0.23	kPa	357.87	Calculated Property
Pvap	3.58	kPa	403.89	Calculated Property
Pvap	24.61	kPa	449.91	Calculated Property
Pvap	100.33	kPa	495.92	Calculated Property
Pvap	294.66	kPa	541.94	Calculated Property
Pvap	709.25	kPa	587.96	Calculated Property
Pvap	1526.73	kPa	633.98	Calculated Property
Pvap	3122.82	kPa	680.00	Calculated Property
Pvap	[0.13; 101.66]	kPa	[351.00; 494.70]	NIST
Equation			ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K
Coefficient A			1.45222e+01
Coefficient B			-3.53703e+03
Coefficient C			-1.37446e+02
Reference			Stull, 1947
Comment			Coefficents calculated by NIST from author's data.
Temperature range, min.			351.00
Temperature range, max.			494.70
Pvap	0.13	kPa	351.00	Calculated Property
Pvap	0.41	kPa	366.97	Calculated Property
Pvap	1.12	kPa	382.93	Calculated Property
Pvap	2.70	kPa	398.90	Calculated Property
Pvap	5.89	kPa	414.87	Calculated Property
Pvap	11.78	kPa	430.83	Calculated Property
Pvap	21.95	kPa	446.80	Calculated Property
Pvap	38.46	kPa	462.77	Calculated Property
Pvap	63.97	kPa	478.73	Calculated Property
Pvap	101.66	kPa	494.70	Calculated Property
Pvap	[1.29; 8.58]	kPa	[385.80; 422.70]	NIST
Equation			ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K
Coefficient A			9.20058e+00
Coefficient B			-1.22676e+03
Coefficient C			-2.48713e+02
Reference			Kahlbaum, 1894
Comment			Coefficents calculated by NIST from author's data.
Temperature range, min.			385.80
Temperature range, max.			422.70
Pvap	1.29	kPa	385.80	Calculated Property
Pvap	1.67	kPa	389.90	Calculated Property
Pvap	2.13	kPa	394.00	Calculated Property
Pvap	2.69	kPa	398.10	Calculated Property
Pvap	3.35	kPa	402.20	Calculated Property
Pvap	4.12	kPa	406.30	Calculated Property
Pvap	5.02	kPa	410.40	Calculated Property
Pvap	6.06	kPa	414.50	Calculated Property
Pvap	7.24	kPa	418.60	Calculated Property
Pvap	8.58	kPa	422.70	Calculated Property

Property	Value	Unit	Temperature (K)	Source
γ	[0.03; 0.01]	N/m	[265.15; 495.15]	Jasper (1972), surface tension of pure liquid compounds Compiled value
Equation			Y = A + B·T + C·T² + D·T³ + E·T⁴ Y is γ in N/m, T in K
Coefficient A			5.30431e-02
Coefficient B			-8.48000e-05
Coefficient C			0.00000e+00
Coefficient D			0.00000e+00
Coefficient E			0.00000e+00
Temperature range, min.			265.15
Temperature range, max.			495.15
γ	0.03	N/m	265.15	Calculated Property
γ	0.03	N/m	290.71	Calculated Property
γ	0.03	N/m	316.26	Calculated Property
γ	0.02	N/m	341.82	Calculated Property
γ	0.02	N/m	367.37	Calculated Property
γ	0.02	N/m	392.93	Calculated Property
γ	0.02	N/m	418.48	Calculated Property
γ	0.02	N/m	444.04	Calculated Property
γ	0.01	N/m	469.59	Calculated Property
γ	0.01	N/m	495.15	Calculated Property

Similar Compounds

Find more compounds similar to Heptanoic acid.

Mixtures

• Heptanoic acid + Propanoic acid
• Heptanoic acid + Butanoic acid
• Heptanoic acid + Hexanoic acid
• Heptanoic acid + Pentanoic acid
• Acetonitrile + Heptanoic acid + Water
• Carbon dioxide + Heptanoic acid

Sources

• KDB Vapor Pressure Data
• Jean-Claude Bradley Open Melting Point Dataset (2014, CC0) ChEDL chemicals 1.5.2, from Bradley, J.-C.; Williams, A.; Lang, A. Jean-Claude Bradley Open Melting Point Dataset. Figshare, 2014 (CC0).
• IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 7 ChEDL chemicals 1.5.2, from Kudchadker, A. P.; Ambrose, D.; Tsonopoulos, C. Vapor-Liquid Critical Properties of Elements and Compounds. 7. Oxygen Compounds Other Than Alkanols and Cycloalkanols. J. Chem. Eng. Data 2001, 46, 457-479.
• Jasper (1972), surface tension of pure liquid compounds ChEDL chemicals 1.5.2, from Jasper, J. J. The Surface Tension of Pure Liquid Compounds. J. Phys. Chem. Ref. Data 1972, 1, 841-1010 (as transcribed in Lange's Handbook).
• PSRK revision IV (2005), critical constants and acentric factors of 1000 components ChEDL chemicals 1.5.2, from Horstmann, S.; Jabłoniec, A.; Krafczyk, J.; Fischer, K.; Gmehling, J. PSRK Group Contribution Equation of State: Comprehensive Revision and Extension IV, Including Critical Constants and α-Function Parameters for 1000 Components. Fluid Phase Equilib. 2005, 227, 157-164.
• Cheméo Relay (1.0)
• Crippen Method
• Crippen Method
• Vapour-liquid equilibrium of propionic acid + caproic acid, isobutyric acid + caproic acid, valeric acid + caproic acid and caproic acid + enanthoic acid binary mixtures
• Effect of temperature on density, sound velocity, refractive index and their derived properties for the binary systems (heptanoic acid + propanoic or butanoic acids)
• Influence of alkyl group and temperature on thermophysical properties of carboxylic acid and their binary mixtures
• Density, Viscosity, and Thermal Conductivity of Eight Carboxylic Acids from (290.3 to 473.4) K
• Subatmospheric Vapor Pressure Curves for Propionic Acid, Butyric Acid, Isobutyric Acid, Valeric Acid, Isovaleric Acid, Hexanoic Acid, and Heptanoic Acid
• Solubility of Small-Chain Carboxylic Acids in Supercritical Carbon Dioxide
• Physico-Chemical Properties of Non-Newtonian Shear Thickening Diisopropyl-ethylammonium-Based Protic Ionic Liquids and Their Mixtures with Water and Acetonitrile
• Ternary Liquid-Liquid Equilibria of Acetonitrile and Water with Heptanoic Acid and Nonanol at 323.15 K and 1 atm
• Joback Method
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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