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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
1054	Ethane	74-84-0	C₂H₆	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	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	94	87	32
1054	Ethane		24	n.a.
1065	Hydrogen sulfide			n.a.

**Heats of Mixing (HE)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	4	13	7
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Gas Solubilities (GLE)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	67	122	n.a.
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			1

**Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	15	n.a.	n.a.
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	4	14	n.a.
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	n.a.	69
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**(A)zeotropic Data (AZD)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	9	n.a.	11
1054	Ethane		16	n.a.
1065	Hydrogen sulfide			n.a.

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	n.a.	6
1054	Ethane		2	n.a.
1065	Hydrogen sulfide			n.a.

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	n.a.	145
1054	Ethane		1	n.a.
1065	Hydrogen sulfide			n.a.

**Critical Data of Mixtures (CRI)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	6	13	n.a.
1054	Ethane		1	n.a.
1065	Hydrogen sulfide			n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	1	157
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Mixture Surface Tensions (MSFT)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	6	5	38
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	n.a.	6
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	n.a.	1
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Mixture Dielectric Constants (MDEC)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	n.a.	4
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Mixture P-v-T Data (MPVT)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	2	8	67
1054	Ethane		29	n.a.
1065	Hydrogen sulfide			n.a.

**Gas Hydrate Data (GHD)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	67	42	n.a.
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Electrical Conductivities (ECND)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	10	n.a.
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Diffusion Coefficients (DIF)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	2	8	9
1054	Ethane		n.a.	n.a.
1065	Hydrogen sulfide			n.a.

**Further Thermodynamic Properties (X)**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	16	13	18
1054	Ethane		11	n.a.
1065	Hydrogen sulfide			n.a.

**Total**
DDB#	Name	1054	1065	2187	Methyldiethanolamine (MDEA)
174	Water	292	336	570
1054	Ethane		84	n.a.
1065	Hydrogen sulfide			1

Dortmund Data Bank Version: February 2024

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