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 Dortmund Data Bank
Thermophysical Data for Process Design
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Query
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DDB# Name CAS-RN Formula
110 Methanol 67-56-1 CH4O Overview Details
174 Water 7732-18-5 H2O Overview Details
1050 Carbon dioxide 124-38-9 CO2 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 174 1050 1065 2187 3865 Piperazine
110 Methanol 244 238 16 n.a. n.a.
174 Water 363 87 32 7
1050 Carbon dioxide 57 3 n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Heats of Mixing (HE)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 130 21 n.a. n.a. n.a.
174 Water 60 13 7 n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Gas Solubilities (GLE)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 7 72 14 n.a. n.a.
174 Water 403 122 n.a. n.a.
1050 Carbon dioxide n.a. 5 n.a.
1065 Hydrogen sulfide 1 n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 82 n.a. n.a. n.a. n.a.
174 Water n.a. n.a. n.a. n.a.
1050 Carbon dioxide 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 174 1050 1065 2187 3865 Piperazine
110 Methanol n.a. n.a. n.a. n.a. n.a.
174 Water 37 14 n.a. n.a.
1050 Carbon dioxide 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 174 1050 1065 2187 3865 Piperazine
110 Methanol 80 n.a. n.a. n.a. n.a.
174 Water n.a. n.a. 69 13
1050 Carbon dioxide n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) 4

(A)zeotropic Data (AZD)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 181 41 11 n.a. n.a.
174 Water 29 n.a. 11 2
1050 Carbon dioxide 19 n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Solid-Liquid Equilibria (SLE)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 29 2 2 n.a. n.a.
174 Water 1 n.a. 6 7
1050 Carbon dioxide 7 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 174 1050 1065 2187 3865 Piperazine
110 Methanol 581 12 n.a. 3 8
174 Water 26 n.a. 145 21
1050 Carbon dioxide 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 174 1050 1065 2187 3865 Piperazine
110 Methanol 4 13 1 n.a. n.a.
174 Water 13 13 n.a. n.a.
1050 Carbon dioxide 2 n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Viscosities (VIS)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 341 15 n.a. 7 n.a.
174 Water 21 1 157 42
1050 Carbon dioxide 5 n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Surface Tensions (MSFT)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 31 n.a. n.a. 7 n.a.
174 Water 70 5 38 10
1050 Carbon dioxide n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Speeds of Sound (MSOS)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 160 39 n.a. n.a. n.a.
174 Water n.a. n.a. 6 n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Thermal Conductivities (MTCN)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 26 n.a. n.a. n.a. n.a.
174 Water 2 n.a. 1 n.a.
1050 Carbon dioxide 12 n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Dielectric Constants (MDEC)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 49 13 n.a. n.a. n.a.
174 Water n.a. n.a. 4 n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture P-v-T Data (MPVT)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 175 68 n.a. n.a. n.a.
174 Water 173 8 67 6
1050 Carbon dioxide 52 n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Mixture Flash Points (MFLP)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 16 n.a. n.a. n.a. n.a.
174 Water n.a. n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Gas Hydrate Data (GHD)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol n.a. n.a. n.a. n.a. n.a.
174 Water 251 42 n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Electrical Conductivities (ECND)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 5 n.a. n.a. n.a. n.a.
174 Water 8 10 n.a. n.a.
1050 Carbon dioxide n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Diffusion Coefficients (DIF)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 29 5 n.a. n.a. n.a.
174 Water 28 8 9 7
1050 Carbon dioxide n.a. n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Further Thermodynamic Properties (X)
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 25 21 n.a. n.a. n.a.
174 Water 103 13 18 6
1050 Carbon dioxide 54 n.a. n.a.
1065 Hydrogen sulfide n.a. n.a.
2187 Methyldiethanolamine (MDEA) n.a.

Total
DDB# Name 174 1050 1065 2187 3865 Piperazine
110 Methanol 2195 560 44 17 8
174 Water 1588 336 570 121
1050 Carbon dioxide 208 8 n.a.
1065 Hydrogen sulfide 1 n.a.
2187 Methyldiethanolamine (MDEA) 4

Dortmund Data Bank Version: February 2024
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