Mixture of Formic acid + Water

Datasets

1. Osmotic coefficient (2)
2. Mole fraction (4)
3. Λ_m - Molar conductivity, S*m2/mol (2)
4. Eutectic temperature, K (2)
5. P_vap - Vapor or sublimation pressure, kPa (2)
6. n₀ - Refractive index (Na D-line) (2)
7. ρ_l - Mass density, kg/m3 (4)
8. γ - Surface tension liquid-gas, N/m (2)
9. T_boil - Boiling temperature at pressure P, K (2)
10. T_fus - Solid-liquid equilibrium temperature, K (4)

Osmotic coefficient [ref]

Operational conditions:

• Pressure, kPa = 20 (Liquid)
• Temperature, K = 298.1 (Liquid)

Molality, mol/kg of Formic acid (1) - Liquid	Osmotic coefficient - Liquid
0.3334	1.0472
0.6596	1.0776
0.7817	1.0892
0.9947	1.1093
1.2477	1.133
1.4389	1.1507
1.6876	1.1735
2.2697	1.2257
2.6666	1.2603
2.9126	1.2814
3.395	1.322
3.7817	1.3536
4.4463	1.4064
4.8361	1.4364
5.3524	1.475
5.6192	1.4944

Osmotic coefficient [ref]

Operational conditions:

• Pressure, kPa = 20 (Liquid)
• Temperature, K = 298.1 (Liquid)

Molality, mol/kg of Formic acid (1) - Liquid	Osmotic coefficient - Liquid
0.3334	1.0472
0.6596	1.0776
0.7817	1.0892
0.9947	1.1093
1.2477	1.133
1.4389	1.1507
1.6876	1.1735
2.2697	1.2257
2.6666	1.2603
2.9126	1.2814
3.395	1.322
3.7817	1.3536
4.4463	1.4064
4.8361	1.4364
5.3524	1.475
5.6192	1.4944

Mole fraction of Water (2) [ref]

Fixed		Measured
Mole fraction of Water (2) - Liquid	Pressure, kPa - Liquid	Mole fraction of Water (2) - Gas
0.1030	99.41	0.0640
0.2060	99.41	0.1560
0.3020	99.41	0.2560
0.4100	99.41	0.4040
0.4870	99.24	0.5120
0.5360	99.24	0.5940
0.6780	99.24	0.7690
0.8540	99.24	0.9310

Mole fraction of Water (2) [ref]

Fixed		Measured
Mole fraction of Water (2) - Liquid	Temperature, K - Liquid	Mole fraction of Water (2) - Gas
0.0000	388.15	0.0000
0.1554	388.15	0.1224
0.2855	388.15	0.2482
0.4067	388.15	0.3915
0.5275	388.15	0.5803
0.6226	388.15	0.7164
0.7364	388.15	0.8634
0.8453	388.15	0.9302
0.9050	388.15	0.9609
0.9549	388.15	0.9834
0.9784	388.15	0.9914
0.0000	398.15	0.0000
0.1672	398.15	0.1422
0.2853	398.15	0.2450
0.4042	398.15	0.4063
0.5291	398.15	0.5925
0.6297	398.15	0.7284
0.7397	398.15	0.8619
0.8501	398.15	0.9305
0.9082	398.15	0.9587
0.9553	398.15	0.9829
0.9782	398.15	0.9914

Mole fraction of Water (2) [ref]

Fixed		Measured
Mole fraction of Water (2) - Liquid	Pressure, kPa - Liquid	Mole fraction of Water (2) - Gas
0.1030	99.41	0.0640
0.2060	99.41	0.1560
0.3020	99.41	0.2560
0.4100	99.41	0.4040
0.4870	99.24	0.5120
0.5360	99.24	0.5940
0.6780	99.24	0.7690
0.8540	99.24	0.9310

Mole fraction of Water (2) [ref]

Fixed		Measured
Mole fraction of Water (2) - Liquid	Temperature, K - Liquid	Mole fraction of Water (2) - Gas
0.0000	388.15	0.0000
0.1554	388.15	0.1224
0.2855	388.15	0.2482
0.4067	388.15	0.3915
0.5275	388.15	0.5803
0.6226	388.15	0.7164
0.7364	388.15	0.8634
0.8453	388.15	0.9302
0.9050	388.15	0.9609
0.9549	388.15	0.9834
0.9784	388.15	0.9914
0.0000	398.15	0.0000
0.1672	398.15	0.1422
0.2853	398.15	0.2450
0.4042	398.15	0.4063
0.5291	398.15	0.5925
0.6297	398.15	0.7284
0.7397	398.15	0.8619
0.8501	398.15	0.9305
0.9082	398.15	0.9587
0.9553	398.15	0.9829
0.9782	398.15	0.9914

Molar conductivity, S*m2/mol [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Molality, mol/kg of Formic acid (1) - Liquid	Temperature, K - Liquid	Molar conductivity, S*m2/mol - Liquid
0.0003	278.15	0.0149
0.0003	283.15	0.0165
0.0003	288.15	0.0180
0.0003	293.15	0.0195
0.0003	298.15	0.0208
0.0003	303.15	0.0221
0.0003	308.15	0.0233
0.0003	313.15	0.0242
0.0006	278.15	0.0113
0.0006	283.15	0.0125
0.0006	288.15	0.0138
0.0006	293.15	0.0149
0.0006	298.15	0.0161
0.0006	303.15	0.0171
0.0006	308.15	0.0180
0.0006	313.15	0.0189
0.0008	278.15	0.0097
0.0008	283.15	0.0108
0.0008	288.15	0.0119
0.0008	293.15	0.0129
0.0008	298.15	0.0139
0.0008	303.15	0.0149
0.0008	308.15	0.0157
0.0008	313.15	0.0164
0.0011	278.15	0.0087
0.0011	283.15	0.0096
0.0011	288.15	0.0106
0.0011	293.15	0.0115
0.0011	298.15	0.0124
0.0011	303.15	0.0133
0.0011	308.15	0.0141
0.0011	313.15	0.0147
0.0014	278.15	0.0077
0.0014	283.15	0.0086
0.0014	288.15	0.0095
0.0014	293.15	0.0103
0.0014	298.15	0.0111
0.0014	303.15	0.0119
0.0014	308.15	0.0126
0.0014	313.15	0.0132
0.0018	278.15	0.0069
0.0018	283.15	0.0077
0.0018	288.15	0.0085
0.0018	293.15	0.0092
0.0018	298.15	0.0099
0.0018	303.15	0.0106
0.0018	308.15	0.0112
0.0018	313.15	0.0117
0.0022	278.15	0.0064
0.0022	283.15	0.0071
0.0022	288.15	0.0078
0.0022	293.15	0.0085
0.0022	298.15	0.0092
0.0022	303.15	0.0098
0.0022	308.15	0.0104
0.0022	313.15	0.0109
0.0026	278.15	0.0059
0.0026	283.15	0.0066
0.0026	288.15	0.0073
0.0026	293.15	0.0079
0.0026	298.15	0.0085
0.0026	303.15	0.0091
0.0026	308.15	0.0096
0.0026	313.15	0.0101
0.0032	278.15	0.0055
0.0032	283.15	0.0061
0.0032	288.15	0.0067
0.0032	293.15	0.0073
0.0032	298.15	0.0079
0.0032	303.15	0.0084
0.0032	308.15	0.0089
0.0032	313.15	0.0094
0.0040	278.15	0.0050
0.0040	283.15	0.0056
0.0040	288.15	0.0062
0.0040	293.15	0.0068
0.0040	298.15	0.0073
0.0040	303.15	0.0078
0.0040	308.15	0.0082
0.0040	313.15	0.0087
0.0049	278.15	0.0046
0.0049	283.15	0.0052
0.0049	288.15	0.0057
0.0049	293.15	0.0062
0.0049	298.15	0.0067
0.0049	303.15	0.0072
0.0049	308.15	0.0076
0.0049	313.15	0.0080

Molar conductivity, S*m2/mol [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Molality, mol/kg of Formic acid (1) - Liquid	Temperature, K - Liquid	Molar conductivity, S*m2/mol - Liquid
0.0003	278.15	0.0149
0.0003	283.15	0.0165
0.0003	288.15	0.0180
0.0003	293.15	0.0195
0.0003	298.15	0.0208
0.0003	303.15	0.0221
0.0003	308.15	0.0233
0.0003	313.15	0.0242
0.0006	278.15	0.0113
0.0006	283.15	0.0125
0.0006	288.15	0.0138
0.0006	293.15	0.0149
0.0006	298.15	0.0161
0.0006	303.15	0.0171
0.0006	308.15	0.0180
0.0006	313.15	0.0189
0.0008	278.15	0.0097
0.0008	283.15	0.0108
0.0008	288.15	0.0119
0.0008	293.15	0.0129
0.0008	298.15	0.0139
0.0008	303.15	0.0149
0.0008	308.15	0.0157
0.0008	313.15	0.0164
0.0011	278.15	0.0087
0.0011	283.15	0.0096
0.0011	288.15	0.0106
0.0011	293.15	0.0115
0.0011	298.15	0.0124
0.0011	303.15	0.0133
0.0011	308.15	0.0141
0.0011	313.15	0.0147
0.0014	278.15	0.0077
0.0014	283.15	0.0086
0.0014	288.15	0.0095
0.0014	293.15	0.0103
0.0014	298.15	0.0111
0.0014	303.15	0.0119
0.0014	308.15	0.0126
0.0014	313.15	0.0132
0.0018	278.15	0.0069
0.0018	283.15	0.0077
0.0018	288.15	0.0085
0.0018	293.15	0.0092
0.0018	298.15	0.0099
0.0018	303.15	0.0106
0.0018	308.15	0.0112
0.0018	313.15	0.0117
0.0022	278.15	0.0064
0.0022	283.15	0.0071
0.0022	288.15	0.0078
0.0022	293.15	0.0085
0.0022	298.15	0.0092
0.0022	303.15	0.0098
0.0022	308.15	0.0104
0.0022	313.15	0.0109
0.0026	278.15	0.0059
0.0026	283.15	0.0066
0.0026	288.15	0.0073
0.0026	293.15	0.0079
0.0026	298.15	0.0085
0.0026	303.15	0.0091
0.0026	308.15	0.0096
0.0026	313.15	0.0101
0.0032	278.15	0.0055
0.0032	283.15	0.0061
0.0032	288.15	0.0067
0.0032	293.15	0.0073
0.0032	298.15	0.0079
0.0032	303.15	0.0084
0.0032	308.15	0.0089
0.0032	313.15	0.0094
0.0040	278.15	0.0050
0.0040	283.15	0.0056
0.0040	288.15	0.0062
0.0040	293.15	0.0068
0.0040	298.15	0.0073
0.0040	303.15	0.0078
0.0040	308.15	0.0082
0.0040	313.15	0.0087
0.0049	278.15	0.0046
0.0049	283.15	0.0052
0.0049	288.15	0.0057
0.0049	293.15	0.0062
0.0049	298.15	0.0067
0.0049	303.15	0.0072
0.0049	308.15	0.0076
0.0049	313.15	0.0080

Eutectic temperature, K [ref]

Eutectic temperature, K - Liquid
221.66

Eutectic temperature, K [ref]

Eutectic temperature, K - Liquid
221.66

Vapor or sublimation pressure, kPa [ref]

Fixed		Measured
Mole fraction of Water (2) - Liquid	Temperature, K - Liquid	Vapor or sublimation pressure, kPa - Liquid
0.0000	388.15	153.70
0.1554	388.15	138.50
0.2855	388.15	130.60
0.4067	388.15	128.50
0.5275	388.15	131.10
0.6226	388.15	136.00
0.7364	388.15	143.90
0.8453	388.15	153.70
0.9050	388.15	159.40
0.9549	388.15	164.90
0.9784	388.15	166.90
0.0000	398.15	200.60
0.1672	398.15	183.30
0.2853	398.15	177.20
0.4042	398.15	176.70
0.5291	398.15	182.00
0.6297	398.15	190.00
0.7397	398.15	200.70
0.8501	398.15	213.30
0.9082	398.15	220.60
0.9553	398.15	226.10
0.9782	398.15	229.20

Vapor or sublimation pressure, kPa [ref]

Fixed		Measured
Mole fraction of Water (2) - Liquid	Temperature, K - Liquid	Vapor or sublimation pressure, kPa - Liquid
0.0000	388.15	153.70
0.1554	388.15	138.50
0.2855	388.15	130.60
0.4067	388.15	128.50
0.5275	388.15	131.10
0.6226	388.15	136.00
0.7364	388.15	143.90
0.8453	388.15	153.70
0.9050	388.15	159.40
0.9549	388.15	164.90
0.9784	388.15	166.90
0.0000	398.15	200.60
0.1672	398.15	183.30
0.2853	398.15	177.20
0.4042	398.15	176.70
0.5291	398.15	182.00
0.6297	398.15	190.00
0.7397	398.15	200.70
0.8501	398.15	213.30
0.9082	398.15	220.60
0.9553	398.15	226.10
0.9782	398.15	229.20

Refractive index (Na D-line) [ref]

Operational conditions:

• Temperature, K = 298.15 (Liquid)
• Pressure, kPa = 101 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Refractive index (Na D-line) - Liquid
0.0007	1.3326
0.0015	1.3327
0.0028	1.3327
0.0067	1.3334
0.0106	1.3344
0.0154	1.335
0.0277	1.3363
0.0538	1.3391
0.1098	1.3445
0.1539	1.3483
0.2040	1.3522
0.3004	1.3586
0.4178	1.3648
0.5101	1.3688
0.6133	1.3722
0.7058	1.3744
0.8162	1.3754
0.8967	1.3754

Refractive index (Na D-line) [ref]

Operational conditions:

• Temperature, K = 298.15 (Liquid)
• Pressure, kPa = 101 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Refractive index (Na D-line) - Liquid
0.0007	1.3326
0.0015	1.3327
0.0028	1.3327
0.0067	1.3334
0.0106	1.3344
0.0154	1.335
0.0277	1.3363
0.0538	1.3391
0.1098	1.3445
0.1539	1.3483
0.2040	1.3522
0.3004	1.3586
0.4178	1.3648
0.5101	1.3688
0.6133	1.3722
0.7058	1.3744
0.8162	1.3754
0.8967	1.3754

Mass density, kg/m3 [ref]

Operational conditions:

• Temperature, K = 298.15 (Liquid)
• Pressure, kPa = 101 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Mass density, kg/m3 - Liquid
0.0007	997.52
0.0015	998.02
0.0028	998.79
0.0067	1001.27
0.0106	1003.6
0.0154	1006.31
0.0277	1013.84
0.0538	1026.93
0.1098	1052.76
0.1539	1069.49
0.2040	1086.51
0.3004	1114.3
0.4178	1141.55
0.5101	1158.59
0.6133	1174.83
0.7058	1187.06
0.8162	1198.4
0.8967	1204.13

Mass density, kg/m3 [ref]

Operational conditions:

• Temperature, K = 298.15 (Liquid)
• Pressure, kPa = 101 (Liquid)

Molality, mol/kg of Formic acid (1) - Liquid	Mass density, kg/m3 - Liquid
0.0049	997.113
0.1291	998.53

Mass density, kg/m3 [ref]

Operational conditions:

• Temperature, K = 298.15 (Liquid)
• Pressure, kPa = 101 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Mass density, kg/m3 - Liquid
0.0007	997.52
0.0015	998.02
0.0028	998.79
0.0067	1001.27
0.0106	1003.6
0.0154	1006.31
0.0277	1013.84
0.0538	1026.93
0.1098	1052.76
0.1539	1069.49
0.2040	1086.51
0.3004	1114.3
0.4178	1141.55
0.5101	1158.59
0.6133	1174.83
0.7058	1187.06
0.8162	1198.4
0.8967	1204.13

Mass density, kg/m3 [ref]

Operational conditions:

• Temperature, K = 298.15 (Liquid)
• Pressure, kPa = 101 (Liquid)

Molality, mol/kg of Formic acid (1) - Liquid	Mass density, kg/m3 - Liquid
0.0049	997.113
0.1291	998.53

Surface tension liquid-gas, N/m [ref]

Operational condition: Temperature, K = 298.15 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Surface tension liquid-gas, N/m - Liquid
0.0007	0.0715
0.0015	0.0711
0.0028	0.0707
0.0067	0.0694
0.0106	0.0686
0.0154	0.0675
0.0277	0.0655
0.0442	0.0631
0.0755	0.0599
0.1098	0.0573
0.1539	0.0552
0.2040	0.0527
0.3004	0.0492
0.4178	0.0473
0.5101	0.0457
0.6133	0.0434
0.7058	0.0414
0.8162	0.0401
0.8967	0.0391

Surface tension liquid-gas, N/m [ref]

Operational condition: Temperature, K = 298.15 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Surface tension liquid-gas, N/m - Liquid
0.0007	0.0715
0.0015	0.0711
0.0028	0.0707
0.0067	0.0694
0.0106	0.0686
0.0154	0.0675
0.0277	0.0655
0.0442	0.0631
0.0755	0.0599
0.1098	0.0573
0.1539	0.0552
0.2040	0.0527
0.3004	0.0492
0.4178	0.0473
0.5101	0.0457
0.6133	0.0434
0.7058	0.0414
0.8162	0.0401
0.8967	0.0391

Boiling temperature at pressure P, K [ref]

Fixed		Measured
Mole fraction of Water (2) - Liquid	Pressure, kPa - Liquid	Boiling temperature at pressure P, K - Liquid
0.1030	99.41	376.30
0.2060	99.41	378.80
0.3020	99.41	379.90
0.4100	99.41	380.60
0.4870	99.24	380.60
0.5360	99.24	380.10
0.6780	99.24	378.40
0.8540	99.24	375.50

Boiling temperature at pressure P, K [ref]

Fixed		Measured
Mole fraction of Water (2) - Liquid	Pressure, kPa - Liquid	Boiling temperature at pressure P, K - Liquid
0.1030	99.41	376.30
0.2060	99.41	378.80
0.3020	99.41	379.90
0.4100	99.41	380.60
0.4870	99.24	380.60
0.5360	99.24	380.10
0.6780	99.24	378.40
0.8540	99.24	375.50

Solid-liquid equilibrium temperature, K [ref]

Operational condition: Pressure, kPa = 84.5 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Solid-liquid equilibrium temperature, K - Liquid
0.9720	282.85
0.9160	274.65
0.7950	263.05
0.6870	254.25
0.6170	247.15
0.5650	240.65
0.5070	235.65
0.4410	231.15

Solid-liquid equilibrium temperature, K [ref]

Operational condition: Pressure, kPa = 84.5 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Solid-liquid equilibrium temperature, K - Liquid
0.3150	229.25
0.2550	238.55
0.1980	247.45
0.1290	256.85
0.0510	267.65
0.0000	273.15

Solid-liquid equilibrium temperature, K [ref]

Operational condition: Pressure, kPa = 84.5 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Solid-liquid equilibrium temperature, K - Liquid
0.9720	282.85
0.9160	274.65
0.7950	263.05
0.6870	254.25
0.6170	247.15
0.5650	240.65
0.5070	235.65
0.4410	231.15

Solid-liquid equilibrium temperature, K [ref]

Operational condition: Pressure, kPa = 84.5 (Liquid)

Mole fraction of Formic acid (1) - Liquid	Solid-liquid equilibrium temperature, K - Liquid
0.3150	229.25
0.2550	238.55
0.1980	247.45
0.1290	256.85
0.0510	267.65
0.0000	273.15

Sources

• Experiment and correlation of osmotic coefficient for aqueous solution of carboxylic acids using NRTL nonrandom factor model
• Differential scanning calorimetry determination of phase diagrams and water activities of aqueous carboxylic acid solutions
• Isobaric and Isothermal Vapor Liquid Equilibria for the Binary System of Water + Formic Acid at 99.41 kPa, 388.15 K, and 398.15 K
• Refractive Index, Surface Tension, and Density of Aqueous Mixtures of Carboxylic Acids at 298.15 K
• Dilute Aqueous Solutions with Formate Ions: A Conductometric Study