Mixture of Piperazine + Water

Datasets

1. Mass fraction (12)
2. C_p,liquid - Molar heat capacity at constant pressure, J/K/mol (2)
3. η - Viscosity, Pa*s (16)
4. Excess molar heat capacity, J/K/mol (2)
5. n₀ - Refractive index (Na D-line) (4)
6. ρ_l - Mass density, kg/m3 (18)
7. γ - Surface tension liquid-gas, N/m (8)
8. Binary diffusion coefficient, m2/s (2)

Mass fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid
272.15	0.0416
272.22	0.0402
272.27	0.0369
272.31	0.0331
272.51	0.0255
272.52	0.0244
272.52	0.0247
272.61	0.0210
272.68	0.0174
272.89	0.0095
272.89	0.0130
273.02	0.0052

Mass fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Crystal of intercomponent compound 2)

Temperature, K - Crystal of intercomponent compound 2	Mass fraction of Piperazine (1) - Liquid
308.00	0.6190
310.70	0.6190
312.75	0.6370
317.65	0.6500
325.62	0.6720
327.25	0.7000

Mass fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid
331.67	0.7153
333.05	0.7494
337.05	0.7590
354.22	0.8290
363.85	0.8977

Mass fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid
276.43	0.0530
278.40	0.0667
284.28	0.0812
287.75	0.1015
294.05	0.1375
298.15	0.1710
300.13	0.1884
304.15	0.2080
305.09	0.2367
306.55	0.6090
307.03	0.2510
307.65	0.5885
307.95	0.5950
308.34	0.5903
310.15	0.3040
310.18	0.6097
311.65	0.5699
312.60	0.3380
312.75	0.5396
314.45	0.4090
314.90	0.3745
314.94	0.5093
316.89	0.4437
317.79	0.4782
318.75	0.4356

Mole fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid
318.00	0.1240
323.00	0.1270
328.00	0.1300
333.00	0.1320
338.00	0.1340
343.00	0.1360
313.00	0.1210

Mole fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid
278.00	0.0150
283.00	0.0220
288.00	0.0250
293.00	0.0300
298.00	0.0340

Mass fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid
272.15	0.0416
272.22	0.0402
272.27	0.0369
272.31	0.0331
272.51	0.0255
272.52	0.0244
272.52	0.0247
272.61	0.0210
272.68	0.0174
272.89	0.0095
272.89	0.0130
273.02	0.0052

Mass fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Crystal of intercomponent compound 2)

Temperature, K - Crystal of intercomponent compound 2	Mass fraction of Piperazine (1) - Liquid
308.00	0.6190
310.70	0.6190
312.75	0.6370
317.65	0.6500
325.62	0.6720
327.25	0.7000

Mass fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid
331.67	0.7153
333.05	0.7494
337.05	0.7590
354.22	0.8290
363.85	0.8977

Mass fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid
276.43	0.0530
278.40	0.0667
284.28	0.0812
287.75	0.1015
294.05	0.1375
298.15	0.1710
300.13	0.1884
304.15	0.2080
305.09	0.2367
306.55	0.6090
307.03	0.2510
307.65	0.5885
307.95	0.5950
308.34	0.5903
310.15	0.3040
310.18	0.6097
311.65	0.5699
312.60	0.3380
312.75	0.5396
314.45	0.4090
314.90	0.3745
314.94	0.5093
316.89	0.4437
317.79	0.4782
318.75	0.4356

Mole fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid
318.00	0.1240
323.00	0.1270
328.00	0.1300
333.00	0.1320
338.00	0.1340
343.00	0.1360
313.00	0.1210

Mole fraction of Piperazine (1) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid
278.00	0.0150
283.00	0.0220
288.00	0.0250
293.00	0.0300
298.00	0.0340

Molar heat capacity at constant pressure, J/K/mol [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid	Molar heat capacity at constant pressure, J/K/mol - Liquid
303.20	0.0500	82.50
303.20	0.1000	89.40
303.20	0.1500	96.10
303.20	0.2000	103.70
308.20	0.0500	82.80
308.20	0.1000	90.00
308.20	0.1500	97.00
308.20	0.2000	104.80
313.20	0.0500	83.20
313.20	0.1000	90.60
313.20	0.1500	98.00
313.20	0.2000	105.90
318.20	0.0500	83.50
318.20	0.1000	91.20
318.20	0.1500	98.90
318.20	0.2000	107.10
323.20	0.0500	83.80
323.20	0.1000	92.00
323.20	0.1500	99.90
323.20	0.2000	108.20
328.20	0.0500	84.20
328.20	0.1000	92.60
328.20	0.1500	100.80
328.20	0.2000	109.40
333.20	0.0500	84.50
333.20	0.1000	93.30
333.20	0.1500	101.70
333.20	0.2000	110.60
338.20	0.0500	84.90
338.20	0.1000	93.90
338.20	0.1500	102.50
338.20	0.2000	111.80
343.20	0.0500	85.30
343.20	0.1000	94.60
343.20	0.1500	103.50
343.20	0.2000	113.00
348.20	0.0500	85.60
348.20	0.1000	95.20
348.20	0.1500	104.40
348.20	0.2000	114.10
353.20	0.0500	86.00
353.20	0.1000	95.90
353.20	0.1500	105.30
353.20	0.2000	115.30

Molar heat capacity at constant pressure, J/K/mol [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid	Molar heat capacity at constant pressure, J/K/mol - Liquid
303.20	0.0500	82.50
303.20	0.1000	89.40
303.20	0.1500	96.10
303.20	0.2000	103.70
308.20	0.0500	82.80
308.20	0.1000	90.00
308.20	0.1500	97.00
308.20	0.2000	104.80
313.20	0.0500	83.20
313.20	0.1000	90.60
313.20	0.1500	98.00
313.20	0.2000	105.90
318.20	0.0500	83.50
318.20	0.1000	91.20
318.20	0.1500	98.90
318.20	0.2000	107.10
323.20	0.0500	83.80
323.20	0.1000	92.00
323.20	0.1500	99.90
323.20	0.2000	108.20
328.20	0.0500	84.20
328.20	0.1000	92.60
328.20	0.1500	100.80
328.20	0.2000	109.40
333.20	0.0500	84.50
333.20	0.1000	93.30
333.20	0.1500	101.70
333.20	0.2000	110.60
338.20	0.0500	84.90
338.20	0.1000	93.90
338.20	0.1500	102.50
338.20	0.2000	111.80
343.20	0.0500	85.30
343.20	0.1000	94.60
343.20	0.1500	103.50
343.20	0.2000	113.00
348.20	0.0500	85.60
348.20	0.1000	95.20
348.20	0.1500	104.40
348.20	0.2000	114.10
353.20	0.0500	86.00
353.20	0.1000	95.90
353.20	0.1500	105.30
353.20	0.2000	115.30

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101.3 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Molality, mol/kg of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
303.15	0.6600	0.0010
303.15	1.1	0.0012
303.15	1.7	0.0015
313.15	0.6600	0.0008
313.15	1.1	0.0009
313.15	1.7	0.0011
323.15	0.6600	0.0006
323.15	1.1	0.0007
323.15	1.7	0.0009

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101.325 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
298.00	0.0174	0.0010
298.00	0.0344	0.0010
298.00	0.0516	0.0011
298.00	0.0688	0.0012
303.00	0.0174	0.0009
303.00	0.0344	0.0009
303.00	0.0516	0.0010
303.00	0.0688	0.0010
308.00	0.0174	0.0008
308.00	0.0344	0.0008
308.00	0.0516	0.0009
308.00	0.0688	0.0009
313.00	0.0174	0.0007
313.00	0.0344	0.0007
313.00	0.0516	0.0008
313.00	0.0688	0.0008
318.00	0.0174	0.0006
318.00	0.0344	0.0007
318.00	0.0516	0.0007
318.00	0.0688	0.0007
323.00	0.0174	0.0006
323.00	0.0344	0.0006
323.00	0.0516	0.0006
323.00	0.0688	0.0007
328.00	0.0174	0.0005
328.00	0.0344	0.0005
328.00	0.0516	0.0006
328.00	0.0688	0.0006
333.00	0.0174	0.0005
333.00	0.0344	0.0005
333.00	0.0516	0.0005
333.00	0.0688	0.0005

Viscosity, Pa*s [ref]

Operational conditions:

• Molality, mol/kg = 1.67 (Liquid)
• Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Viscosity, Pa*s - Liquid
298.15	0.0019
313.15	0.0013
333.15	0.0009

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
298.15	0.0174	0.0009
298.15	0.0345	0.0009
298.15	0.0688	0.0011
298.15	0.1035	0.0013
303.15	0.0174	0.0008
303.15	0.0345	0.0008
303.15	0.0688	0.0010
303.15	0.1035	0.0012
308.15	0.0174	0.0007
308.15	0.0345	0.0008
308.15	0.0688	0.0009
308.15	0.1035	0.0010
313.15	0.0174	0.0007
313.15	0.0345	0.0007
313.15	0.0688	0.0008
313.15	0.1035	0.0009
318.15	0.0174	0.0006
318.15	0.0345	0.0006
318.15	0.0688	0.0007
318.15	0.1035	0.0008
323.15	0.0174	0.0005
323.15	0.0345	0.0006
323.15	0.0688	0.0006
323.15	0.1035	0.0008
328.15	0.0174	0.0005
328.15	0.0345	0.0005
328.15	0.0688	0.0006
328.15	0.1035	0.0007
333.15	0.0174	0.0005
333.15	0.0345	0.0005
333.15	0.0688	0.0005
333.15	0.1035	0.0006

Viscosity, Pa*s [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Viscosity, Pa*s - Liquid
303.15	0.0010
313.15	0.0008
323.15	0.0006
333.15	0.0005

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
283.15	0.0000	0.0013
283.15	0.0009	0.0013
283.15	0.0018	0.0014
283.15	0.0037	0.0014
283.15	0.0055	0.0015
283.15	0.0074	0.0015
293.15	0.0000	0.0010
293.15	0.0009	0.0010
293.15	0.0018	0.0010
293.15	0.0037	0.0011
293.15	0.0055	0.0011
293.15	0.0074	0.0012
303.15	0.0000	0.0008
303.15	0.0009	0.0008
303.15	0.0018	0.0008
303.15	0.0037	0.0009
303.15	0.0055	0.0009
303.15	0.0074	0.0009
313.15	0.0000	0.0007
313.15	0.0009	0.0007
313.15	0.0018	0.0007
313.15	0.0037	0.0007
313.15	0.0055	0.0008
313.15	0.0074	0.0008
323.15	0.0000	0.0005
323.15	0.0009	0.0006
323.15	0.0018	0.0006
323.15	0.0037	0.0006
323.15	0.0055	0.0006
323.15	0.0074	0.0007

Viscosity, Pa*s [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Viscosity, Pa*s - Liquid
303.15	0.0009
313.15	0.0008
323.15	0.0006

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
303.15	0.0174	0.0009
303.15	0.0516	0.0010
303.15	0.1035	0.0013
313.15	0.0174	0.0007
313.15	0.0516	0.0008
313.15	0.1035	0.0010
318.15	0.0174	0.0006
318.15	0.0516	0.0007
318.15	0.1035	0.0009
323.15	0.0174	0.0006
323.15	0.0516	0.0006
323.15	0.1035	0.0008
333.15	0.0174	0.0005
333.15	0.0516	0.0005
333.15	0.1035	0.0006

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101.3 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Molality, mol/kg of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
303.15	0.6600	0.0010
303.15	1.1	0.0012
303.15	1.7	0.0015
313.15	0.6600	0.0008
313.15	1.1	0.0009
313.15	1.7	0.0011
323.15	0.6600	0.0006
323.15	1.1	0.0007
323.15	1.7	0.0009

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101.325 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
298.00	0.0174	0.0010
298.00	0.0344	0.0010
298.00	0.0516	0.0011
298.00	0.0688	0.0012
303.00	0.0174	0.0009
303.00	0.0344	0.0009
303.00	0.0516	0.0010
303.00	0.0688	0.0010
308.00	0.0174	0.0008
308.00	0.0344	0.0008
308.00	0.0516	0.0009
308.00	0.0688	0.0009
313.00	0.0174	0.0007
313.00	0.0344	0.0007
313.00	0.0516	0.0008
313.00	0.0688	0.0008
318.00	0.0174	0.0006
318.00	0.0344	0.0007
318.00	0.0516	0.0007
318.00	0.0688	0.0007
323.00	0.0174	0.0006
323.00	0.0344	0.0006
323.00	0.0516	0.0006
323.00	0.0688	0.0007
328.00	0.0174	0.0005
328.00	0.0344	0.0005
328.00	0.0516	0.0006
328.00	0.0688	0.0006
333.00	0.0174	0.0005
333.00	0.0344	0.0005
333.00	0.0516	0.0005
333.00	0.0688	0.0005

Viscosity, Pa*s [ref]

Operational conditions:

• Molality, mol/kg = 1.67 (Liquid)
• Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Viscosity, Pa*s - Liquid
298.15	0.0019
313.15	0.0013
333.15	0.0009

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
298.15	0.0174	0.0009
298.15	0.0345	0.0009
298.15	0.0688	0.0011
298.15	0.1035	0.0013
303.15	0.0174	0.0008
303.15	0.0345	0.0008
303.15	0.0688	0.0010
303.15	0.1035	0.0012
308.15	0.0174	0.0007
308.15	0.0345	0.0008
308.15	0.0688	0.0009
308.15	0.1035	0.0010
313.15	0.0174	0.0007
313.15	0.0345	0.0007
313.15	0.0688	0.0008
313.15	0.1035	0.0009
318.15	0.0174	0.0006
318.15	0.0345	0.0006
318.15	0.0688	0.0007
318.15	0.1035	0.0008
323.15	0.0174	0.0005
323.15	0.0345	0.0006
323.15	0.0688	0.0006
323.15	0.1035	0.0008
328.15	0.0174	0.0005
328.15	0.0345	0.0005
328.15	0.0688	0.0006
328.15	0.1035	0.0007
333.15	0.0174	0.0005
333.15	0.0345	0.0005
333.15	0.0688	0.0005
333.15	0.1035	0.0006

Viscosity, Pa*s [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Viscosity, Pa*s - Liquid
303.15	0.0010
313.15	0.0008
323.15	0.0006
333.15	0.0005

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
283.15	0.0000	0.0013
283.15	0.0009	0.0013
283.15	0.0018	0.0014
283.15	0.0037	0.0014
283.15	0.0055	0.0015
283.15	0.0074	0.0015
293.15	0.0000	0.0010
293.15	0.0009	0.0010
293.15	0.0018	0.0010
293.15	0.0037	0.0011
293.15	0.0055	0.0011
293.15	0.0074	0.0012
303.15	0.0000	0.0008
303.15	0.0009	0.0008
303.15	0.0018	0.0008
303.15	0.0037	0.0009
303.15	0.0055	0.0009
303.15	0.0074	0.0009
313.15	0.0000	0.0007
313.15	0.0009	0.0007
313.15	0.0018	0.0007
313.15	0.0037	0.0007
313.15	0.0055	0.0008
313.15	0.0074	0.0008
323.15	0.0000	0.0005
323.15	0.0009	0.0006
323.15	0.0018	0.0006
323.15	0.0037	0.0006
323.15	0.0055	0.0006
323.15	0.0074	0.0007

Viscosity, Pa*s [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Viscosity, Pa*s - Liquid
303.15	0.0009
313.15	0.0008
323.15	0.0006

Viscosity, Pa*s [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Viscosity, Pa*s - Liquid
303.15	0.0174	0.0009
303.15	0.0516	0.0010
303.15	0.1035	0.0013
313.15	0.0174	0.0007
313.15	0.0516	0.0008
313.15	0.1035	0.0010
318.15	0.0174	0.0006
318.15	0.0516	0.0007
318.15	0.1035	0.0009
323.15	0.0174	0.0006
323.15	0.0516	0.0006
323.15	0.1035	0.0008
333.15	0.0174	0.0005
333.15	0.0516	0.0005
333.15	0.1035	0.0006

Excess molar heat capacity, J/K/mol [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid	Excess molar heat capacity, J/K/mol - Liquid
303.20	0.0500	2.16
303.20	0.1000	3.88
303.20	0.1500	5.53
303.20	0.2000	7.95
308.20	0.0500	2.37
308.20	0.1000	4.28
308.20	0.1500	6.13
308.20	0.2000	8.65
313.20	0.0500	2.58
313.20	0.1000	4.68
313.20	0.1500	6.73
313.20	0.2000	9.35
318.20	0.0500	2.78
318.20	0.1000	5.08
318.20	0.1500	7.33
318.20	0.2000	10.05
323.20	0.0500	2.99
323.20	0.1000	5.58
323.20	0.1500	7.93
323.20	0.2000	10.75
328.20	0.0500	3.2
328.20	0.1000	5.98
328.20	0.1500	8.53
328.20	0.2000	11.45
333.20	0.0500	3.41
333.20	0.1000	6.38
333.20	0.1500	9.03
333.20	0.2000	12.25
338.20	0.0500	3.62
338.20	0.1000	6.78
338.20	0.1500	9.53
338.20	0.2000	12.95
343.20	0.0500	3.83
343.20	0.1000	7.18
343.20	0.1500	10.13
343.20	0.2000	13.65
348.20	0.0500	4.04
348.20	0.1000	7.58
348.20	0.1500	10.63
348.20	0.2000	14.35
353.20	0.0500	4.25
353.20	0.1000	7.98
353.20	0.1500	11.23
353.20	0.2000	15.05

Excess molar heat capacity, J/K/mol [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid	Excess molar heat capacity, J/K/mol - Liquid
303.20	0.0500	2.16
303.20	0.1000	3.88
303.20	0.1500	5.53
303.20	0.2000	7.95
308.20	0.0500	2.37
308.20	0.1000	4.28
308.20	0.1500	6.13
308.20	0.2000	8.65
313.20	0.0500	2.58
313.20	0.1000	4.68
313.20	0.1500	6.73
313.20	0.2000	9.35
318.20	0.0500	2.78
318.20	0.1000	5.08
318.20	0.1500	7.33
318.20	0.2000	10.05
323.20	0.0500	2.99
323.20	0.1000	5.58
323.20	0.1500	7.93
323.20	0.2000	10.75
328.20	0.0500	3.2
328.20	0.1000	5.98
328.20	0.1500	8.53
328.20	0.2000	11.45
333.20	0.0500	3.41
333.20	0.1000	6.38
333.20	0.1500	9.03
333.20	0.2000	12.25
338.20	0.0500	3.62
338.20	0.1000	6.78
338.20	0.1500	9.53
338.20	0.2000	12.95
343.20	0.0500	3.83
343.20	0.1000	7.18
343.20	0.1500	10.13
343.20	0.2000	13.65
348.20	0.0500	4.04
348.20	0.1000	7.58
348.20	0.1500	10.63
348.20	0.2000	14.35
353.20	0.0500	4.25
353.20	0.1000	7.98
353.20	0.1500	11.23
353.20	0.2000	15.05

Refractive index (Na D-line) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Refractive index (Na D-line) - Liquid
298.15	0.0174	1.338
298.15	0.0345	1.3418
298.15	0.0688	1.3476
298.15	0.1035	1.3531
303.15	0.0174	1.3371
303.15	0.0345	1.3402
303.15	0.0688	1.3461
303.15	0.1035	1.352
313.15	0.0174	1.336
313.15	0.0345	1.3389
313.15	0.0688	1.3448
313.15	0.1035	1.3507
323.15	0.0174	1.3348
323.15	0.0345	1.3376
323.15	0.0688	1.3434
323.15	0.1035	1.3496
333.15	0.0174	1.3335
333.15	0.0345	1.3358
333.15	0.0688	1.3422
333.15	0.1035	1.3483

Refractive index (Na D-line) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Refractive index (Na D-line) - Liquid
303.15	0.0174	1.3345
303.15	0.0516	1.3402
303.15	0.1035	1.3485
313.15	0.0174	1.3337
313.15	0.0516	1.3391
313.15	0.1035	1.348
318.15	0.0174	1.3332
318.15	0.0516	1.3383
318.15	0.1035	1.3475
323.15	0.0174	1.3329
323.15	0.0516	1.3379
323.15	0.1035	1.347
333.15	0.0174	1.3324
333.15	0.0516	1.3364
333.15	0.1035	1.3463

Refractive index (Na D-line) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Refractive index (Na D-line) - Liquid
298.15	0.0174	1.338
298.15	0.0345	1.3418
298.15	0.0688	1.3476
298.15	0.1035	1.3531
303.15	0.0174	1.3371
303.15	0.0345	1.3402
303.15	0.0688	1.3461
303.15	0.1035	1.352
313.15	0.0174	1.336
313.15	0.0345	1.3389
313.15	0.0688	1.3448
313.15	0.1035	1.3507
323.15	0.0174	1.3348
323.15	0.0345	1.3376
323.15	0.0688	1.3434
323.15	0.1035	1.3496
333.15	0.0174	1.3335
333.15	0.0345	1.3358
333.15	0.0688	1.3422
333.15	0.1035	1.3483

Refractive index (Na D-line) [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Refractive index (Na D-line) - Liquid
303.15	0.0174	1.3345
303.15	0.0516	1.3402
303.15	0.1035	1.3485
313.15	0.0174	1.3337
313.15	0.0516	1.3391
313.15	0.1035	1.348
318.15	0.0174	1.3332
318.15	0.0516	1.3383
318.15	0.1035	1.3475
323.15	0.0174	1.3329
323.15	0.0516	1.3379
323.15	0.1035	1.347
333.15	0.0174	1.3324
333.15	0.0516	1.3364
333.15	0.1035	1.3463

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101.3 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Molality, mol/kg of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
303.15	0.6600	997.55
303.15	1.1	999.58
303.15	1.7	1002.4
313.15	0.6600	994.45
313.15	1.1	995.73
313.15	1.7	998.08
323.15	0.6600	989.89
323.15	1.1	991.34
323.15	1.7	993.64

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101.325 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
298.00	0.0174	997.8
298.00	0.0345	998.5
298.00	0.0516	999.4
298.00	0.0688	1000.6
303.00	0.0174	996.5
303.00	0.0345	997.2
303.00	0.0516	998.1
303.00	0.0688	999.0
308.00	0.0174	995.1
308.00	0.0345	995.7
308.00	0.0516	996.5
308.00	0.0688	997.6
313.00	0.0174	993.2
313.00	0.0345	994.1
313.00	0.0516	994.7
313.00	0.0688	995.6
318.00	0.0174	991.4
318.00	0.0345	992.2
318.00	0.0516	992.5
318.00	0.0688	993.8
323.00	0.0174	989.3
323.00	0.0345	990.2
323.00	0.0516	990.4
323.00	0.0688	991.4
328.00	0.0174	986.7
328.00	0.0345	987.4
328.00	0.0516	988.0
328.00	0.0688	989.1
333.00	0.0174	984.2
333.00	0.0345	984.5
333.00	0.0516	985.7
333.00	0.0688	987.4

Mass density, kg/m3 [ref]

Operational conditions:

• Molality, mol/kg = 1.67 (Liquid)
• Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mass density, kg/m3 - Liquid
293.15	1006.7
313.15	999.4
333.15	989.1

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
298.15	0.0174	997.75
298.15	0.0345	998.52
298.15	0.0688	1000.18
298.15	0.1035	1002.23
303.15	0.0174	996.37
303.15	0.0345	997.08
303.15	0.0688	998.69
303.15	0.1035	1000.64
308.15	0.0174	994.74
308.15	0.0345	995.43
308.15	0.0688	996.97
308.15	0.1035	998.84
313.15	0.0174	992.91
313.15	0.0345	993.59
313.15	0.0688	995.07
313.15	0.1035	996.86
318.15	0.0174	990.9
318.15	0.0345	991.56
318.15	0.0688	992.99
318.15	0.1035	994.73
323.15	0.0174	988.72
323.15	0.0345	989.35
323.15	0.0688	990.74
323.15	0.1035	992.39
328.15	0.0174	986.37
328.15	0.0345	986.98
328.15	0.0688	988.33
328.15	0.1035	989.92
333.15	0.0174	983.83
333.15	0.0345	984.46
333.15	0.0688	985.77
333.15	0.1035	987.3

Mass density, kg/m3 [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Mass density, kg/m3 - Liquid
303.15	998.34
313.15	993.9
323.15	989.79
333.15	985.1

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
283.15	0.0000	999.7
283.15	0.0018	1000.15
283.15	0.0037	1000.51
283.15	0.0074	1001.34
283.15	0.0112	1002.24
283.15	0.0194	1004.7
293.15	0.0000	998.2
293.15	0.0018	998.63
293.15	0.0037	998.98
293.15	0.0074	999.75
293.15	0.0112	1000.58
293.15	0.0194	1002.52
303.15	0.0000	995.65
303.15	0.0018	996.1
303.15	0.0037	996.42
303.15	0.0074	997.15
303.15	0.0112	997.91
303.15	0.0194	999.69
313.15	0.0000	992.22
313.15	0.0018	992.66
313.15	0.0037	992.99
313.15	0.0074	993.68
313.15	0.0112	994.37
313.15	0.0194	996.04
323.15	0.0000	988.04
323.15	0.0018	988.51
323.15	0.0037	988.81
323.15	0.0074	989.47
323.15	0.0112	990.14
323.15	0.0194	991.64

Mass density, kg/m3 [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Mass density, kg/m3 - Liquid
303.15	998.03
313.15	994.71
323.15	990.08

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
298.15	0.0174	998.287
298.15	0.0516	999.36
298.15	0.1035	1001.285
303.15	0.0174	996.868
303.15	0.0516	997.913
303.15	0.1035	999.758
308.15	0.0174	995.233
308.15	0.0516	996.252
308.15	0.1035	998.022
313.15	0.0174	993.399
313.15	0.0516	994.396
313.15	0.1035	996.095
318.15	0.0174	991.382
318.15	0.0516	992.359
318.15	0.1035	993.991
323.15	0.0174	989.188
323.15	0.0516	990.147
323.15	0.1035	991.722
328.15	0.0174	986.804
328.15	0.0516	987.769
328.15	0.1035	989.288
333.15	0.0174	984.32
333.15	0.0516	985.241
333.15	0.1035	986.131
338.15	0.0174	981.667
338.15	0.0516	982.506
338.15	0.1035	983.952

Mass density, kg/m3 [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Temperature, K = 293.15 (Liquid)

Molality, mol/kg of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
0.2628	999.1
0.4689	999.8
0.7153	1000.8
0.9675	1001.8
1.2676	1003.1
1.4477	1004.0

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101.3 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Molality, mol/kg of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
303.15	0.6600	997.55
303.15	1.1	999.58
303.15	1.7	1002.4
313.15	0.6600	994.45
313.15	1.1	995.73
313.15	1.7	998.08
323.15	0.6600	989.89
323.15	1.1	991.34
323.15	1.7	993.64

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101.325 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
298.00	0.0174	997.8
298.00	0.0345	998.5
298.00	0.0516	999.4
298.00	0.0688	1000.6
303.00	0.0174	996.5
303.00	0.0345	997.2
303.00	0.0516	998.1
303.00	0.0688	999.0
308.00	0.0174	995.1
308.00	0.0345	995.7
308.00	0.0516	996.5
308.00	0.0688	997.6
313.00	0.0174	993.2
313.00	0.0345	994.1
313.00	0.0516	994.7
313.00	0.0688	995.6
318.00	0.0174	991.4
318.00	0.0345	992.2
318.00	0.0516	992.5
318.00	0.0688	993.8
323.00	0.0174	989.3
323.00	0.0345	990.2
323.00	0.0516	990.4
323.00	0.0688	991.4
328.00	0.0174	986.7
328.00	0.0345	987.4
328.00	0.0516	988.0
328.00	0.0688	989.1
333.00	0.0174	984.2
333.00	0.0345	984.5
333.00	0.0516	985.7
333.00	0.0688	987.4

Mass density, kg/m3 [ref]

Operational conditions:

• Molality, mol/kg = 1.67 (Liquid)
• Pressure, kPa = 101 (Liquid)

Temperature, K - Liquid	Mass density, kg/m3 - Liquid
293.15	1006.7
313.15	999.4
333.15	989.1

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
298.15	0.0174	997.75
298.15	0.0345	998.52
298.15	0.0688	1000.18
298.15	0.1035	1002.23
303.15	0.0174	996.37
303.15	0.0345	997.08
303.15	0.0688	998.69
303.15	0.1035	1000.64
308.15	0.0174	994.74
308.15	0.0345	995.43
308.15	0.0688	996.97
308.15	0.1035	998.84
313.15	0.0174	992.91
313.15	0.0345	993.59
313.15	0.0688	995.07
313.15	0.1035	996.86
318.15	0.0174	990.9
318.15	0.0345	991.56
318.15	0.0688	992.99
318.15	0.1035	994.73
323.15	0.0174	988.72
323.15	0.0345	989.35
323.15	0.0688	990.74
323.15	0.1035	992.39
328.15	0.0174	986.37
328.15	0.0345	986.98
328.15	0.0688	988.33
328.15	0.1035	989.92
333.15	0.0174	983.83
333.15	0.0345	984.46
333.15	0.0688	985.77
333.15	0.1035	987.3

Mass density, kg/m3 [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Mass density, kg/m3 - Liquid
303.15	998.34
313.15	993.9
323.15	989.79
333.15	985.1

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mole fraction of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
283.15	0.0000	999.7
283.15	0.0018	1000.15
283.15	0.0037	1000.51
283.15	0.0074	1001.34
283.15	0.0112	1002.24
283.15	0.0194	1004.7
293.15	0.0000	998.2
293.15	0.0018	998.63
293.15	0.0037	998.98
293.15	0.0074	999.75
293.15	0.0112	1000.58
293.15	0.0194	1002.52
303.15	0.0000	995.65
303.15	0.0018	996.1
303.15	0.0037	996.42
303.15	0.0074	997.15
303.15	0.0112	997.91
303.15	0.0194	999.69
313.15	0.0000	992.22
313.15	0.0018	992.66
313.15	0.0037	992.99
313.15	0.0074	993.68
313.15	0.0112	994.37
313.15	0.0194	996.04
323.15	0.0000	988.04
323.15	0.0018	988.51
323.15	0.0037	988.81
323.15	0.0074	989.47
323.15	0.0112	990.14
323.15	0.0194	991.64

Mass density, kg/m3 [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Mass density, kg/m3 - Liquid
303.15	998.03
313.15	994.71
323.15	990.08

Mass density, kg/m3 [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
298.15	0.0174	998.287
298.15	0.0516	999.36
298.15	0.1035	1001.285
303.15	0.0174	996.868
303.15	0.0516	997.913
303.15	0.1035	999.758
308.15	0.0174	995.233
308.15	0.0516	996.252
308.15	0.1035	998.022
313.15	0.0174	993.399
313.15	0.0516	994.396
313.15	0.1035	996.095
318.15	0.0174	991.382
318.15	0.0516	992.359
318.15	0.1035	993.991
323.15	0.0174	989.188
323.15	0.0516	990.147
323.15	0.1035	991.722
328.15	0.0174	986.804
328.15	0.0516	987.769
328.15	0.1035	989.288
333.15	0.0174	984.32
333.15	0.0516	985.241
333.15	0.1035	986.131
338.15	0.0174	981.667
338.15	0.0516	982.506
338.15	0.1035	983.952

Mass density, kg/m3 [ref]

Operational conditions:

• Pressure, kPa = 101 (Liquid)
• Temperature, K = 293.15 (Liquid)

Molality, mol/kg of Piperazine (1) - Liquid	Mass density, kg/m3 - Liquid
0.2628	999.1
0.4689	999.8
0.7153	1000.8
0.9675	1001.8
1.2676	1003.1
1.4477	1004.0

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

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Surface tension liquid-gas, N/m - Liquid
298.15	0.0174	0.0710
298.15	0.0345	0.0699
298.15	0.0688	0.0698
298.15	0.1035	0.0694
303.15	0.0174	0.0701
303.15	0.0345	0.0692
303.15	0.0688	0.0690
303.15	0.1035	0.0684
313.15	0.0174	0.0691
313.15	0.0345	0.0682
313.15	0.0688	0.0681
313.15	0.1035	0.0674
323.15	0.0174	0.0679
323.15	0.0345	0.0673
323.15	0.0688	0.0671
323.15	0.1035	0.0664
333.15	0.0174	0.0670
333.15	0.0345	0.0665
333.15	0.0688	0.0661
333.15	0.1035	0.0653

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

Operational condition: Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Surface tension liquid-gas, N/m - Liquid
303.15	0.0696
313.15	0.0680
323.15	0.0665
333.15	0.0652

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

Operational condition: Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Surface tension liquid-gas, N/m - Liquid
303.15	0.0685
313.15	0.0670
323.15	0.0651

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

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Surface tension liquid-gas, N/m - Liquid
303.10	0.0174	0.0715
303.10	0.0516	0.0702
303.10	0.1035	0.0691
313.20	0.0174	0.0693
313.20	0.0516	0.0685
313.20	0.1035	0.0679
318.20	0.0174	0.0688
318.20	0.0516	0.0673
318.20	0.1035	0.0668
323.10	0.0174	0.0678
323.10	0.0516	0.0667
323.10	0.1035	0.0654
333.30	0.0174	0.0662
333.30	0.0516	0.0653
333.30	0.1035	0.0641

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

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Surface tension liquid-gas, N/m - Liquid
298.15	0.0174	0.0710
298.15	0.0345	0.0699
298.15	0.0688	0.0698
298.15	0.1035	0.0694
303.15	0.0174	0.0701
303.15	0.0345	0.0692
303.15	0.0688	0.0690
303.15	0.1035	0.0684
313.15	0.0174	0.0691
313.15	0.0345	0.0682
313.15	0.0688	0.0681
313.15	0.1035	0.0674
323.15	0.0174	0.0679
323.15	0.0345	0.0673
323.15	0.0688	0.0671
323.15	0.1035	0.0664
333.15	0.0174	0.0670
333.15	0.0345	0.0665
333.15	0.0688	0.0661
333.15	0.1035	0.0653

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

Operational condition: Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Surface tension liquid-gas, N/m - Liquid
303.15	0.0696
313.15	0.0680
323.15	0.0665
333.15	0.0652

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

Operational condition: Mass fraction = 0.0516 (Liquid)

Temperature, K - Liquid	Surface tension liquid-gas, N/m - Liquid
303.15	0.0685
313.15	0.0670
323.15	0.0651

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

Fixed		Measured
Temperature, K - Liquid	Mass fraction of Piperazine (1) - Liquid	Surface tension liquid-gas, N/m - Liquid
303.10	0.0174	0.0715
303.10	0.0516	0.0702
303.10	0.1035	0.0691
313.20	0.0174	0.0693
313.20	0.0516	0.0685
313.20	0.1035	0.0679
318.20	0.0174	0.0688
318.20	0.0516	0.0673
318.20	0.1035	0.0668
323.10	0.0174	0.0678
323.10	0.0516	0.0667
323.10	0.1035	0.0654
333.30	0.0174	0.0662
333.30	0.0516	0.0653
333.30	0.1035	0.0641

Binary diffusion coefficient, m2/s [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Amount concentration (molarity), mol/dm3 of Piperazine (1) - Liquid	Binary diffusion coefficient, m2/s - Liquid
293.15	0.0080	0.0000
293.15	0.2840	0.0000
293.15	0.6020	0.0000
293.15	0.9070	0.0000
293.15	1.46	0.0000
298.15	0.0080	0.0000
298.15	0.2850	0.0000
298.15	0.6020	0.0000
298.15	0.9080	0.0000
298.15	1.46	0.0000
303.15	0.0090	0.0000
303.15	0.2850	0.0000
303.15	0.6020	0.0000
303.15	0.9080	0.0000
303.15	1.46	0.0000
313.15	0.0010	0.0000
313.15	0.2850	0.0000
313.15	0.6030	0.0000
313.15	0.9100	0.0000
313.15	1.46	0.0000
333.15	0.0010	0.0000
333.15	0.2850	0.0000
333.15	0.6040	0.0000
333.15	0.9130	0.0000
333.15	1.47	0.0000
353.15	0.0010	0.0000
353.15	0.2870	0.0000
353.15	0.6050	0.0000
353.15	0.9150	0.0000
353.15	1.47	0.0000
368.15	0.0020	0.0000
368.15	0.2870	0.0000
368.15	0.6060	0.0000
368.15	0.9170	0.0000
368.15	1.48	0.0000

Binary diffusion coefficient, m2/s [ref]

Operational condition: Pressure, kPa = 101 (Liquid)

Fixed		Measured
Temperature, K - Liquid	Amount concentration (molarity), mol/dm3 of Piperazine (1) - Liquid	Binary diffusion coefficient, m2/s - Liquid
293.15	0.0080	0.0000
293.15	0.2840	0.0000
293.15	0.6020	0.0000
293.15	0.9070	0.0000
293.15	1.46	0.0000
298.15	0.0080	0.0000
298.15	0.2850	0.0000
298.15	0.6020	0.0000
298.15	0.9080	0.0000
298.15	1.46	0.0000
303.15	0.0090	0.0000
303.15	0.2850	0.0000
303.15	0.6020	0.0000
303.15	0.9080	0.0000
303.15	1.46	0.0000
313.15	0.0010	0.0000
313.15	0.2850	0.0000
313.15	0.6030	0.0000
313.15	0.9100	0.0000
313.15	1.46	0.0000
333.15	0.0010	0.0000
333.15	0.2850	0.0000
333.15	0.6040	0.0000
333.15	0.9130	0.0000
333.15	1.47	0.0000
353.15	0.0010	0.0000
353.15	0.2870	0.0000
353.15	0.6050	0.0000
353.15	0.9150	0.0000
353.15	1.47	0.0000
368.15	0.0020	0.0000
368.15	0.2870	0.0000
368.15	0.6060	0.0000
368.15	0.9170	0.0000
368.15	1.48	0.0000

Sources

• Liquid heat capacity of the solvent system (piperazine + n-methyldiethanolamine + water)
• Vapor Liquid Equilibrium and Physicochemical Properties of Novel Aqueous Blends of (2-Diethylaminoethanol + Piperazine) for CO2 Appropriation
• Density and Viscosity of Aqueous Solutions of Piperazine and (2-Amino-2-methyl-1-propanol + Piperazine) from 298 to 333 K
• Density and Viscosity of Aqueous (Piperazine + Carbon Dioxide) Solutions
• Physical Properties of Aqueous Solutions of Piperazine and (2-Amino-2-methyl-1-propanol + Piperazine) from (298.15 to 333.15) K
• Densities, Viscosities, and Surface Tensions of Aqueous Mixtures of Sulfolane + Triethanolamine and Sulfolane + Diisopropanolamine
• Aqueous Solubility of Piperazine and 2-Amino-2-methyl-1-propanol plus Their Mixtures Using an Improved Freezing-Point Depression Method
• Solubility of N2O in and Density and Viscosity of Aqueous Solutions of Piperazine, Ammonia, and Their Mixtures from (283.15 to 323.15) K
• Density, Viscosity, and Surface Tension of Aqueous Solution of 1,4-Bis-(2-hydroxypropyl)-piperazine Sulfate
• Densities, Viscosities, and Liquid Diffusivities in Aqueous Piperazine and Aqueous (Piperazine + N-Methyldiethanolamine) Solutions
• Thermophysical Properties of Aqueous Piperazine and Aqueous (N-Methyldiethanolamine + Piperazine) Solutions at Temperatures (298.15 to 338.15) K
• Solubility of Carbon Dioxide in Aqueous Solutions of N-Methyldiethanolamine and Piperazine in the Low Gas Loading Region