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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
913 Ethanethiol 75-08-1 C2H6S Overview Details
1051 Methane 74-82-8 CH4 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 913 1051 2187 3865 Piperazine
174 Water 4 260 32 7
913 Ethanethiol 3 n.a. n.a.
1051 Methane 5 n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Heats of Mixing (HE)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 65 7 n.a.
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Gas Solubilities (GLE)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water 6 128 n.a. n.a.
913 Ethanethiol 1 n.a. n.a.
1051 Methane 1 n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water 8 n.a. n.a. n.a.
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water 6 n.a. n.a. n.a.
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Heat Capacities of Mixtures, Excess Heat Capacities (CPE)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. n.a. 69 13
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) 4

(A)zeotropic Data (AZD)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 11 11 2
913 Ethanethiol 3 n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Solid-Liquid Equilibria (SLE)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 1 6 7
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Densities and Volumes of Mixtures, Excess Volumes (VE)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 17 145 21
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Critical Data of Mixtures (CRI)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 5 n.a. n.a.
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Viscosities (VIS)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. n.a. 157 42
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Surface Tensions (MSFT)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 51 38 10
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Speeds of Sound (MSOS)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. n.a. 6 n.a.
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Thermal Conductivities (MTCN)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 9 1 n.a.
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Dielectric Constants (MDEC)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. n.a. 4 n.a.
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture P-v-T Data (MPVT)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 20 67 6
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Gas Hydrate Data (GHD)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 246 n.a. n.a.
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Diffusion Coefficients (DIF)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water n.a. 8 9 7
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Further Thermodynamic Properties (X)
DDB# Name 913 1051 2187 3865 Piperazine
174 Water 2 55 18 6
913 Ethanethiol n.a. n.a. n.a.
1051 Methane n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Total
DDB# Name 913 1051 2187 3865 Piperazine
174 Water 26 876 570 121
913 Ethanethiol 7 n.a. n.a.
1051 Methane 6 n.a.
2187 Methyldiethanolamine (MDEA) 4

Dortmund Data Bank Version: February 2024
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