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Dortmund Data Bank
Thermophysical Data for Process Design
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DDB#	Name	CAS-RN	Formula
174	Water	7732-18-5	H₂O	Overview	Details
1050	Carbon dioxide	124-38-9	CO₂	Overview	Details
1051	Methane	74-82-8	CH₄	Overview	Details
1056	Nitrogen	7727-37-9	N₂	Overview	Details
1065	Hydrogen sulfide	7783-06-4	H₂S	Overview	Details

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Mixture Data

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**Vapor-Liquid Equilibria (VLE)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	363	260	122	87
1050	Carbon dioxide		178	138	57
1051	Methane			140	39
1056	Nitrogen				8

**Heats of Mixing (HE)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	60	65	128	13
1050	Carbon dioxide		84	78	n.a.
1051	Methane			50	9
1056	Nitrogen				n.a.

**Gas Solubilities (GLE)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	403	128	265	122
1050	Carbon dioxide		n.a.	n.a.	n.a.
1051	Methane			n.a.	n.a.
1056	Nitrogen				n.a.

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	37	n.a.	n.a.	14
1050	Carbon dioxide		n.a.	n.a.	n.a.
1051	Methane			n.a.	2
1056	Nitrogen				n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	n.a.	n.a.	n.a.	n.a.
1050	Carbon dioxide		n.a.	n.a.	n.a.
1051	Methane			4	n.a.
1056	Nitrogen				n.a.

**(A)zeotropic Data (AZD)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	29	11	2	n.a.
1050	Carbon dioxide		65	26	19
1051	Methane			58	4
1056	Nitrogen				7

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	1	1	1	n.a.
1050	Carbon dioxide		31	9	7
1051	Methane			8	1
1056	Nitrogen				1

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	26	17	15	n.a.
1050	Carbon dioxide		31	24	n.a.
1051	Methane			71	1
1056	Nitrogen				n.a.

**Critical Data of Mixtures (CRI)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	13	5	2	13
1050	Carbon dioxide		13	9	2
1051	Methane			6	3
1056	Nitrogen				n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	21	n.a.	n.a.	1
1050	Carbon dioxide		36	18	5
1051	Methane			55	3
1056	Nitrogen				n.a.

**Mixture Surface Tensions (MSFT)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	70	51	28	5
1050	Carbon dioxide		2	n.a.	n.a.
1051	Methane			15	n.a.
1056	Nitrogen				n.a.

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	n.a.	n.a.	n.a.	n.a.
1050	Carbon dioxide		n.a.	1	n.a.
1051	Methane			6	n.a.
1056	Nitrogen				n.a.

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	2	9	2	n.a.
1050	Carbon dioxide		22	18	12
1051	Methane			21	n.a.
1056	Nitrogen				n.a.

**Mixture Dielectric Constants (MDEC)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	n.a.	n.a.	n.a.	n.a.
1050	Carbon dioxide		n.a.	n.a.	n.a.
1051	Methane			16	n.a.
1056	Nitrogen				n.a.

**Mixture P-v-T Data (MPVT)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	173	20	12	8
1050	Carbon dioxide		134	173	52
1051	Methane			118	48
1056	Nitrogen				11

**Gas Hydrate Data (GHD)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	251	246	30	42
1050	Carbon dioxide		n.a.	n.a.	n.a.
1051	Methane			n.a.	n.a.
1056	Nitrogen				n.a.

**Electrical Conductivities (ECND)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	8	n.a.	n.a.	10
1050	Carbon dioxide		n.a.	n.a.	n.a.
1051	Methane			n.a.	n.a.
1056	Nitrogen				n.a.

**Diffusion Coefficients (DIF)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	28	8	6	8
1050	Carbon dioxide		7	12	n.a.
1051	Methane			2	n.a.
1056	Nitrogen				n.a.

**Further Thermodynamic Properties (X)**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	103	55	18	13
1050	Carbon dioxide		50	14	54
1051	Methane			44	16
1056	Nitrogen				7

**Total**
DDB#	Name	1050	1051	1056	1065	Hydrogen sulfide
174	Water	1588	876	631	336
1050	Carbon dioxide		653	520	208
1051	Methane			614	126
1056	Nitrogen				34

Dortmund Data Bank Version: February 2024

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