Mixture of Formamide, N,N-dimethyl- + Heptane

Datasets

1. Mole fraction (4)
2. Liquid-liquid equilibrium temperature, K (4)
3. Interfacial tension, N/m (6)
4. ρ_l - Mass density, kg/m3 (8)

Mole fraction of Heptane (2) [ref]

Fixed		Measured
Temperature, K - Liquid mixture 2	Pressure, kPa - Liquid mixture 2	Mole fraction of Heptane (2) - Liquid mixture 1
313.20	101.00	0.0280

Mole fraction of Heptane (2) [ref]

Fixed		Measured
Temperature, K - Liquid mixture 2	Pressure, kPa - Liquid mixture 2	Mole fraction of Heptane (2) - Liquid mixture 2
313.20	101.00	0.9820

Mole fraction of Heptane (2) [ref]

Fixed		Measured
Temperature, K - Liquid mixture 2	Pressure, kPa - Liquid mixture 2	Mole fraction of Heptane (2) - Liquid mixture 1
313.20	101.00	0.0280

Mole fraction of Heptane (2) [ref]

Fixed		Measured
Temperature, K - Liquid mixture 2	Pressure, kPa - Liquid mixture 2	Mole fraction of Heptane (2) - Liquid mixture 2
313.20	101.00	0.9820

Liquid-liquid equilibrium temperature, K [ref]

Operational condition: Pressure, kPa = 101 (Liquid mixture 1)

Mole fraction of Formamide, N,N-dimethyl- (1) - Liquid mixture 1	Liquid-liquid equilibrium temperature, K - Liquid mixture 1
0.0405	285.97
0.0504	293.12
0.0600	297.13
0.0709	301.58
0.0755	304.07
0.1007	311.83
0.1299	320.41
0.1495	323.51
0.1716	327.06
0.1856	328.49
0.2033	330.77
0.2198	332.21
0.2227	332.50
0.2509	335.46
0.2782	337.18
0.3056	338.85
0.3236	340.07
0.3516	340.85
0.3833	342.06
0.4097	342.57
0.4231	342.69
0.4524	342.95
0.4775	343.08
0.5045	343.21
0.5324	343.32
0.5535	343.35
0.5613	343.36
0.5770	343.27
0.5963	343.18
0.6209	342.85
0.6485	342.39
0.6746	341.98
0.7004	340.90
0.7238	339.93
0.7259	339.83
0.7538	337.65
0.7770	335.21
0.8009	332.35
0.8205	329.41
0.8316	327.47
0.8441	324.80
0.8459	324.28
0.8464	324.17
0.8509	323.05
0.8596	321.08
0.8759	316.26
0.8907	311.34
0.9054	304.87
0.9170	299.08
0.9232	295.82
0.9269	293.20
0.9322	289.26
0.9359	287.24
0.9415	282.97

Liquid-liquid equilibrium temperature, K [ref]

Operational condition: Pressure, kPa = 101.3 (Liquid mixture 1)

Mole fraction of Formamide, N,N-dimethyl- (1) - Liquid mixture 1	Liquid-liquid equilibrium temperature, K - Liquid mixture 1
0.2648	336.67
0.3056	338.74
0.3529	340.56
0.3693	341.15
0.4034	341.76
0.4243	342.08
0.4472	342.33
0.4880	342.48
0.5092	342.63
0.5446	342.56
0.5775	342.37
0.5984	342.30
0.6181	342.22
0.6457	341.55
0.6915	340.28
0.6916	340.42
0.7489	337.31

Liquid-liquid equilibrium temperature, K [ref]

Operational condition: Pressure, kPa = 101 (Liquid mixture 1)

Mole fraction of Formamide, N,N-dimethyl- (1) - Liquid mixture 1	Liquid-liquid equilibrium temperature, K - Liquid mixture 1
0.0405	285.97
0.0504	293.12
0.0600	297.13
0.0709	301.58
0.0755	304.07
0.1007	311.83
0.1299	320.41
0.1495	323.51
0.1716	327.06
0.1856	328.49
0.2033	330.77
0.2198	332.21
0.2227	332.50
0.2509	335.46
0.2782	337.18
0.3056	338.85
0.3236	340.07
0.3516	340.85
0.3833	342.06
0.4097	342.57
0.4231	342.69
0.4524	342.95
0.4775	343.08
0.5045	343.21
0.5324	343.32
0.5535	343.35
0.5613	343.36
0.5770	343.27
0.5963	343.18
0.6209	342.85
0.6485	342.39
0.6746	341.98
0.7004	340.90
0.7238	339.93
0.7259	339.83
0.7538	337.65
0.7770	335.21
0.8009	332.35
0.8205	329.41
0.8316	327.47
0.8441	324.80
0.8459	324.28
0.8464	324.17
0.8509	323.05
0.8596	321.08
0.8759	316.26
0.8907	311.34
0.9054	304.87
0.9170	299.08
0.9232	295.82
0.9269	293.20
0.9322	289.26
0.9359	287.24
0.9415	282.97

Liquid-liquid equilibrium temperature, K [ref]

Operational condition: Pressure, kPa = 101.3 (Liquid mixture 1)

Mole fraction of Formamide, N,N-dimethyl- (1) - Liquid mixture 1	Liquid-liquid equilibrium temperature, K - Liquid mixture 1
0.2648	336.67
0.3056	338.74
0.3529	340.56
0.3693	341.15
0.4034	341.76
0.4243	342.08
0.4472	342.33
0.4880	342.48
0.5092	342.63
0.5446	342.56
0.5775	342.37
0.5984	342.30
0.6181	342.22
0.6457	341.55
0.6915	340.28
0.6916	340.42
0.7489	337.31

Interfacial tension, N/m [ref]

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Heptane (2) - Liquid	Interfacial tension, N/m - Liquid
298.15	0.0000	0.0360
298.15	0.0160	0.0341
298.15	0.0250	0.0322
298.15	0.0300	0.0314
298.15	0.0460	0.0287
298.15	0.0560	0.0277
298.15	0.0570	0.0274
298.15	0.0580	0.0270
298.15	0.9440	0.0205
298.15	0.9450	0.0205
298.15	0.9590	0.0204
298.15	0.9750	0.0204
298.15	0.9840	0.0203
298.15	1.0000	0.0198
318.15	0.0000	0.0334
318.15	0.0160	0.0319
318.15	0.0250	0.0311
318.15	0.0300	0.0304
318.15	0.0370	0.0292
318.15	0.0460	0.0280
318.15	0.0560	0.0270
318.15	0.0570	0.0270
318.15	0.0580	0.0266
318.15	0.0600	0.0262
318.15	0.0800	0.0243
318.15	0.1000	0.0222
318.15	0.8780	0.0189
318.15	0.9100	0.0186
318.15	0.9440	0.0188
318.15	0.9450	0.0187
318.15	0.9590	0.0188
318.15	0.9750	0.0182
318.15	0.9840	0.0181
318.15	1.0000	0.0179

Interfacial tension, N/m [ref]

Operational condition: Pressure, kPa = 101 (Liquid mixture 1)

Temperature, K - Liquid mixture 1	Interfacial tension, N/m - Liquid mixture 1
297.83	0.0024
308.00	0.0019
317.75	0.0013
328.15	0.0007
297.83	0.0024
308.00	0.0019

Interfacial tension, N/m [ref]

Operational condition: Pressure, kPa = 101.3 (Liquid mixture 1)

Temperature, K - Liquid mixture 1	Interfacial tension, N/m - Liquid mixture 1
297.83	0.0025
302.83	0.0022
307.85	0.0019
312.85	0.0016
317.86	0.0013
322.86	0.0009
327.88	0.0007
332.88	0.0004
334.87	0.0003
336.86	0.0002
337.88	0.0002
338.88	0.0001
339.87	0.0001
340.87	0.0000
341.25	0.0000
341.88	0.0000
342.18	0.0000

Interfacial tension, N/m [ref]

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Heptane (2) - Liquid	Interfacial tension, N/m - Liquid
298.15	0.0000	0.0360
298.15	0.0160	0.0341
298.15	0.0250	0.0322
298.15	0.0300	0.0314
298.15	0.0460	0.0287
298.15	0.0560	0.0277
298.15	0.0570	0.0274
298.15	0.0580	0.0270
298.15	0.9440	0.0205
298.15	0.9450	0.0205
298.15	0.9590	0.0204
298.15	0.9750	0.0204
298.15	0.9840	0.0203
298.15	1.0000	0.0198
318.15	0.0000	0.0334
318.15	0.0160	0.0319
318.15	0.0250	0.0311
318.15	0.0300	0.0304
318.15	0.0370	0.0292
318.15	0.0460	0.0280
318.15	0.0560	0.0270
318.15	0.0570	0.0270
318.15	0.0580	0.0266
318.15	0.0600	0.0262
318.15	0.0800	0.0243
318.15	0.1000	0.0222
318.15	0.8780	0.0189
318.15	0.9100	0.0186
318.15	0.9440	0.0188
318.15	0.9450	0.0187
318.15	0.9590	0.0188
318.15	0.9750	0.0182
318.15	0.9840	0.0181
318.15	1.0000	0.0179

Interfacial tension, N/m [ref]

Operational condition: Pressure, kPa = 101 (Liquid mixture 1)

Temperature, K - Liquid mixture 1	Interfacial tension, N/m - Liquid mixture 1
297.83	0.0024
308.00	0.0019
317.75	0.0013
328.15	0.0007
297.83	0.0024
308.00	0.0019

Interfacial tension, N/m [ref]

Operational condition: Pressure, kPa = 101.3 (Liquid mixture 1)

Temperature, K - Liquid mixture 1	Interfacial tension, N/m - Liquid mixture 1
297.83	0.0025
302.83	0.0022
307.85	0.0019
312.85	0.0016
317.86	0.0013
322.86	0.0009
327.88	0.0007
332.88	0.0004
334.87	0.0003
336.86	0.0002
337.88	0.0002
338.88	0.0001
339.87	0.0001
340.87	0.0000
341.25	0.0000
341.88	0.0000
342.18	0.0000

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Heptane (2) - Liquid	Mass density, kg/m3 - Liquid
298.15	0.0000	944.072
298.15	0.0160	937.085
298.15	0.0250	933.113
298.15	0.0300	930.536
298.15	0.0370	927.759
298.15	0.0460	923.761
298.15	0.0560	919.794
298.15	0.0570	919.14
298.15	0.0580	918.702
298.15	0.9350	687.975
298.15	0.9440	686.984
298.15	0.9450	686.853
298.15	0.9590	684.733
298.15	0.9750	682.892
298.15	0.9840	681.827
298.15	1.0000	679.788
318.15	0.0000	924.984
318.15	0.0160	918.051
318.15	0.0250	914.603
318.15	0.0300	911.498
318.15	0.0370	908.897
318.15	0.0460	905.072
318.15	0.0560	901.036
318.15	0.0570	900.33
318.15	0.0580	899.742
318.15	0.0600	899.281
318.15	0.0800	891.094
318.15	0.1000	882.094
318.15	0.9350	670.394
318.15	0.9440	669.492
318.15	0.9450	669.302
318.15	0.9590	667.371
318.15	0.9750	665.45
318.15	0.9840	664.351
318.15	1.0000	662.387

Mass density, kg/m3 [ref]

Fixed		Measured
Temperature, K - Liquid mixture 1	Mass density, kg/m3 - Liquid mixture 2	Mass density, kg/m3 - Liquid mixture 1
297.83	689.08	907.04
308.00	684.51	888.35
317.75	680.13	868.1
328.15	684.46	839.73

Mass density, kg/m3 [ref]

Temperature, K - Liquid mixture 1	Mass density, kg/m3 - Liquid mixture 1
298.21	689.3
303.17	686.3
308.12	684.4
313.10	683.1
318.05	679.9
323.02	682.0
332.94	685.7
335.41	688.4
337.89	693.2
338.89	695.6
339.89	699.5
340.36	700.5
340.48	702.3
340.48	700.8
340.87	704.3
340.88	702.3
340.88	703.0
341.18	704.4
341.46	705.9
341.46	705.3
341.85	705.6
341.95	708.5
342.05	708.2
342.16	710.3
342.16	710.9
342.25	712.5
342.25	712.3
342.35	717.1
342.40	719.0
342.45	720.2
342.51	721.8
342.56	719.6
342.60	725.8
342.64	725.3
342.64	725.4

Mass density, kg/m3 [ref]

Temperature, K - Liquid mixture 2	Mass density, kg/m3 - Liquid mixture 2
298.21	906.0
303.17	897.3
308.12	888.3
313.10	878.5
318.05	867.9
323.02	855.7
332.94	825.6
335.41	815.8
337.89	805.2
338.89	799.4
339.89	792.8
340.36	788.4
340.48	787.7
340.48	787.7
340.87	784.9
340.88	783.8
340.88	783.8
341.18	780.8
341.46	777.1
341.46	777.1
341.85	780.2
341.95	778.4
342.05	776.7
342.16	774.9
342.16	775.5
342.25	773.5
342.25	773.5
342.35	767.2
342.40	765.9
342.45	764.4
342.51	761.7
342.56	758.6
342.60	755.8
342.64	750.6
342.64	750.6

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Heptane (2) - Liquid	Mass density, kg/m3 - Liquid
298.15	0.0000	944.072
298.15	0.0160	937.085
298.15	0.0250	933.113
298.15	0.0300	930.536
298.15	0.0370	927.759
298.15	0.0460	923.761
298.15	0.0560	919.794
298.15	0.0570	919.14
298.15	0.0580	918.702
298.15	0.9350	687.975
298.15	0.9440	686.984
298.15	0.9450	686.853
298.15	0.9590	684.733
298.15	0.9750	682.892
298.15	0.9840	681.827
298.15	1.0000	679.788
318.15	0.0000	924.984
318.15	0.0160	918.051
318.15	0.0250	914.603
318.15	0.0300	911.498
318.15	0.0370	908.897
318.15	0.0460	905.072
318.15	0.0560	901.036
318.15	0.0570	900.33
318.15	0.0580	899.742
318.15	0.0600	899.281
318.15	0.0800	891.094
318.15	0.1000	882.094
318.15	0.9350	670.394
318.15	0.9440	669.492
318.15	0.9450	669.302
318.15	0.9590	667.371
318.15	0.9750	665.45
318.15	0.9840	664.351
318.15	1.0000	662.387

Mass density, kg/m3 [ref]

Fixed		Measured
Temperature, K - Liquid mixture 1	Mass density, kg/m3 - Liquid mixture 2	Mass density, kg/m3 - Liquid mixture 1
297.83	689.08	907.04
308.00	684.51	888.35
317.75	680.13	868.1
328.15	684.46	839.73

Mass density, kg/m3 [ref]

Temperature, K - Liquid mixture 1	Mass density, kg/m3 - Liquid mixture 1
298.21	689.3
303.17	686.3
308.12	684.4
313.10	683.1
318.05	679.9
323.02	682.0
332.94	685.7
335.41	688.4
337.89	693.2
338.89	695.6
339.89	699.5
340.36	700.5
340.48	702.3
340.48	700.8
340.87	704.3
340.88	702.3
340.88	703.0
341.18	704.4
341.46	705.9
341.46	705.3
341.85	705.6
341.95	708.5
342.05	708.2
342.16	710.3
342.16	710.9
342.25	712.5
342.25	712.3
342.35	717.1
342.40	719.0
342.45	720.2
342.51	721.8
342.56	719.6
342.60	725.8
342.64	725.3
342.64	725.4

Mass density, kg/m3 [ref]

Temperature, K - Liquid mixture 2	Mass density, kg/m3 - Liquid mixture 2
298.21	906.0
303.17	897.3
308.12	888.3
313.10	878.5
318.05	867.9
323.02	855.7
332.94	825.6
335.41	815.8
337.89	805.2
338.89	799.4
339.89	792.8
340.36	788.4
340.48	787.7
340.48	787.7
340.87	784.9
340.88	783.8
340.88	783.8
341.18	780.8
341.46	777.1
341.46	777.1
341.85	780.2
341.95	778.4
342.05	776.7
342.16	774.9
342.16	775.5
342.25	773.5
342.25	773.5
342.35	767.2
342.40	765.9
342.45	764.4
342.51	761.7
342.56	758.6
342.60	755.8
342.64	750.6
342.64	750.6

Sources

• Determination and correlation of liquid liquid equilibria for four binary N,N-dimethylformamide + hydrocarbon systems
• Interfacial tension of binary mixtures exhibiting azeotropic behavior: Measurement and modeling with PCP-SAFT combined with Density Gradient Theory
• Surface Tension and Interfacial Tension of Binary Organic Liquid Mixtures
• Thermodynamics of Mixtures Containing a Strongly Polar Compound. 8. Liquid-Liquid Equilibria for N,N-Dialkylamide + Selected N-Alkanes
• Liquid Liquid Equilibria for the Systems: Heptane + Benzene + Solvent (Propylene carbonate, N,N-Dimethylformamide, or Mixtures) at Temperatures from (303.2 to 323.2) K