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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
1050 Carbon dioxide 124-38-9 CO2 Overview Details
1051 Methane 74-82-8 CH4 Overview Details
1065 Hydrogen sulfide 7783-06-4 H2S Overview Details
2187 Methyldiethanolamine (MDEA) 105-59-9 C5H13NO2 Overview Details
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Mixture Data

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Vapor-Liquid Equilibria (VLE)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water 4 363 260 87 32
913 Ethanethiol n.a. 3 n.a. n.a.
1050 Carbon dioxide 178 57 3
1051 Methane 39 5
1065 Hydrogen sulfide n.a.

Heats of Mixing (HE)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 60 65 13 7
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 84 n.a. n.a.
1051 Methane 9 n.a.
1065 Hydrogen sulfide n.a.

Gas Solubilities (GLE)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water 6 403 128 122 n.a.
913 Ethanethiol n.a. 1 n.a. n.a.
1050 Carbon dioxide n.a. n.a. 5
1051 Methane n.a. 1
1065 Hydrogen sulfide 1

Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water 8 n.a. n.a. n.a. n.a.
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1051 Methane n.a. n.a.
1065 Hydrogen sulfide n.a.

Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water 6 37 n.a. 14 n.a.
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1051 Methane 2 n.a.
1065 Hydrogen sulfide n.a.

Heat Capacities of Mixtures, Excess Heat Capacities (CPE)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. n.a. n.a. n.a. 69
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1051 Methane n.a. n.a.
1065 Hydrogen sulfide n.a.

(A)zeotropic Data (AZD)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 29 11 n.a. 11
913 Ethanethiol n.a. 3 n.a. n.a.
1050 Carbon dioxide 65 19 n.a.
1051 Methane 4 n.a.
1065 Hydrogen sulfide n.a.

Solid-Liquid Equilibria (SLE)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 1 1 n.a. 6
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 31 7 n.a.
1051 Methane 1 n.a.
1065 Hydrogen sulfide n.a.

Densities and Volumes of Mixtures, Excess Volumes (VE)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 26 17 n.a. 145
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 31 n.a. n.a.
1051 Methane 1 n.a.
1065 Hydrogen sulfide n.a.

Critical Data of Mixtures (CRI)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 13 5 13 n.a.
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 13 2 n.a.
1051 Methane 3 n.a.
1065 Hydrogen sulfide n.a.

Mixture Viscosities (VIS)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 21 n.a. 1 157
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 36 5 n.a.
1051 Methane 3 n.a.
1065 Hydrogen sulfide n.a.

Mixture Surface Tensions (MSFT)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 70 51 5 38
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 2 n.a. n.a.
1051 Methane n.a. n.a.
1065 Hydrogen sulfide n.a.

Mixture Speeds of Sound (MSOS)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. n.a. n.a. n.a. 6
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1051 Methane n.a. n.a.
1065 Hydrogen sulfide n.a.

Mixture Thermal Conductivities (MTCN)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 2 9 n.a. 1
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 22 12 n.a.
1051 Methane n.a. n.a.
1065 Hydrogen sulfide n.a.

Mixture Dielectric Constants (MDEC)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. n.a. n.a. n.a. 4
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1051 Methane n.a. n.a.
1065 Hydrogen sulfide n.a.

Mixture P-v-T Data (MPVT)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 173 20 8 67
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 134 52 n.a.
1051 Methane 48 n.a.
1065 Hydrogen sulfide n.a.

Gas Hydrate Data (GHD)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 251 246 42 n.a.
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1051 Methane n.a. n.a.
1065 Hydrogen sulfide n.a.

Electrical Conductivities (ECND)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 8 n.a. 10 n.a.
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1051 Methane n.a. n.a.
1065 Hydrogen sulfide n.a.

Diffusion Coefficients (DIF)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water n.a. 28 8 8 9
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 7 n.a. n.a.
1051 Methane n.a. n.a.
1065 Hydrogen sulfide n.a.

Further Thermodynamic Properties (X)
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water 2 103 55 13 18
913 Ethanethiol n.a. n.a. n.a. n.a.
1050 Carbon dioxide 50 54 n.a.
1051 Methane 16 n.a.
1065 Hydrogen sulfide n.a.

Total
DDB# Name 913 1050 1051 1065 2187 Methyldiethanolamine (MDEA)
174 Water 26 1588 876 336 570
913 Ethanethiol n.a. 7 n.a. n.a.
1050 Carbon dioxide 653 208 8
1051 Methane 126 6
1065 Hydrogen sulfide 1

Dortmund Data Bank Version: February 2024
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