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 Dortmund Data Bank
Thermophysical Data for Process Design
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DDB# Name CAS-RN Formula
91 Heptane 142-82-5 C7H16 Overview Details
284 N-Methyl-2-pyrrolidone 872-50-4 C5H9NO Overview Details
579 Methanethiol 74-93-1 CH4S 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
Search for mixtures containing this mixture as subsystem

Mixture Data

Number of available sets is shown


Vapor-Liquid Equilibria (VLE)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 12 n.a. 68 80 12
284 N-Methyl-2-pyrrolidone n.a. 53 14 14
579 Methanethiol 6 12 1
1050 Carbon dioxide 178 57
1051 Methane 39

Heats of Mixing (HE)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 5 n.a. 1 8 n.a.
284 N-Methyl-2-pyrrolidone n.a. 9 n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 84 n.a.
1051 Methane 9

Gas Solubilities (GLE)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane n.a. n.a. 15 21 1
284 N-Methyl-2-pyrrolidone 1 33 23 27
579 Methanethiol n.a. 1 n.a.
1050 Carbon dioxide n.a. n.a.
1051 Methane n.a.

Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 84 n.a. n.a. n.a. n.a.
284 N-Methyl-2-pyrrolidone n.a. 3 n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a.
1051 Methane n.a.

Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 9 n.a. 3 3 n.a.
284 N-Methyl-2-pyrrolidone n.a. n.a. n.a. n.a.
579 Methanethiol n.a. 1 n.a.
1050 Carbon dioxide n.a. n.a.
1051 Methane 2

Heat Capacities of Mixtures, Excess Heat Capacities (CPE)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane n.a. n.a. n.a. 17 n.a.
284 N-Methyl-2-pyrrolidone n.a. n.a. n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a.
1051 Methane n.a.

(A)zeotropic Data (AZD)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 5 n.a. 14 24 4
284 N-Methyl-2-pyrrolidone n.a. 3 n.a. n.a.
579 Methanethiol n.a. 5 n.a.
1050 Carbon dioxide 65 19
1051 Methane 4

Solid-Liquid Equilibria (SLE)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane n.a. n.a. 3 5 n.a.
284 N-Methyl-2-pyrrolidone n.a. n.a. n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 31 7
1051 Methane 1

Densities and Volumes of Mixtures, Excess Volumes (VE)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 3 n.a. 1 n.a. n.a.
284 N-Methyl-2-pyrrolidone n.a. n.a. n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 31 n.a.
1051 Methane 1

Critical Data of Mixtures (CRI)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 1 n.a. 10 10 n.a.
284 N-Methyl-2-pyrrolidone n.a. 1 n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 13 2
1051 Methane 3

Mixture Viscosities (VIS)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane n.a. n.a. 14 11 n.a.
284 N-Methyl-2-pyrrolidone n.a. n.a. n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 36 5
1051 Methane 3

Mixture Surface Tensions (MSFT)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 1 n.a. 19 3 n.a.
284 N-Methyl-2-pyrrolidone n.a. n.a. n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 2 n.a.
1051 Methane n.a.

Mixture Speeds of Sound (MSOS)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 1 n.a. 14 8 n.a.
284 N-Methyl-2-pyrrolidone n.a. n.a. n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide n.a. n.a.
1051 Methane n.a.

Mixture Thermal Conductivities (MTCN)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane n.a. n.a. n.a. n.a. n.a.
284 N-Methyl-2-pyrrolidone n.a. n.a. n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 22 12
1051 Methane n.a.

Mixture P-v-T Data (MPVT)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane n.a. n.a. 92 82 n.a.
284 N-Methyl-2-pyrrolidone n.a. n.a. n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 134 52
1051 Methane 48

Diffusion Coefficients (DIF)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane n.a. n.a. 10 5 n.a.
284 N-Methyl-2-pyrrolidone n.a. 1 n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 7 n.a.
1051 Methane n.a.

Further Thermodynamic Properties (X)
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 2 n.a. 3 26 n.a.
284 N-Methyl-2-pyrrolidone n.a. 2 n.a. n.a.
579 Methanethiol n.a. n.a. n.a.
1050 Carbon dioxide 50 54
1051 Methane 16

Total
DDB# Name 284 579 1050 1051 1065 Hydrogen sulfide
91 Heptane 123 n.a. 267 303 17
284 N-Methyl-2-pyrrolidone 1 105 37 41
579 Methanethiol 6 19 1
1050 Carbon dioxide 653 208
1051 Methane 126

Dortmund Data Bank Version: February 2024
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