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Thermophysical Data for Process Design
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DDB# Name CAS-RN Formula
174 Water 7732-18-5 H2O Overview Details
542 Sulfolane 126-33-0 C4H8O2S Overview Details
1065 Hydrogen sulfide 7783-06-4 H2S Overview Details
2187 Methyldiethanolamine (MDEA) 105-59-9 C5H13NO2 Overview Details
3865 Piperazine 110-85-0 C4H10N2 Overview Details
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Mixture Data

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Vapor-Liquid Equilibria (VLE)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 17 87 32 7
542 Sulfolane 15 n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Heats of Mixing (HE)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 3 13 7 n.a.
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Gas Solubilities (GLE)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water n.a. 122 n.a. n.a.
542 Sulfolane 10 n.a. n.a.
1065 Hydrogen sulfide 1 n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 7 n.a. n.a. n.a.
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water n.a. 14 n.a. n.a.
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Heat Capacities of Mixtures, Excess Heat Capacities (CPE)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 30 n.a. 69 13
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) 4

(A)zeotropic Data (AZD)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 12 n.a. 11 2
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Solid-Liquid Equilibria (SLE)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 5 n.a. 6 7
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Densities and Volumes of Mixtures, Excess Volumes (VE)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 39 n.a. 145 21
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Critical Data of Mixtures (CRI)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water n.a. 13 n.a. n.a.
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Viscosities (VIS)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 27 1 157 42
542 Sulfolane 7 1 n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Surface Tensions (MSFT)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 15 5 38 10
542 Sulfolane n.a. 1 n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Speeds of Sound (MSOS)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water n.a. n.a. 6 n.a.
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Thermal Conductivities (MTCN)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 6 n.a. 1 n.a.
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Dielectric Constants (MDEC)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 21 n.a. 4 n.a.
542 Sulfolane n.a. 8 n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture P-v-T Data (MPVT)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water n.a. 8 67 6
542 Sulfolane 7 n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Gas Hydrate Data (GHD)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water n.a. 42 n.a. n.a.
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Electrical Conductivities (ECND)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water n.a. 10 n.a. n.a.
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Diffusion Coefficients (DIF)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water n.a. 8 9 7
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Further Thermodynamic Properties (X)
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 2 13 18 6
542 Sulfolane n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Total
DDB# Name 542 1065 2187 3865 Piperazine
174 Water 184 336 570 121
542 Sulfolane 39 10 n.a.
1065 Hydrogen sulfide 1 n.a.
2187 Methyldiethanolamine (MDEA) 4

Dortmund Data Bank Version: February 2024
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