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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
174	Water	7732-18-5	H₂O	Overview	Details
1050	Carbon dioxide	124-38-9	CO₂	Overview	Details
1056	Nitrogen	7727-37-9	N₂	Overview	Details
1764	Triethylenetetramine	112-24-3	C₆H₁₈N₄	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	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	363	122	n.a.	32
1050	Carbon dioxide		138	n.a.	3
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Heats of Mixing (HE)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	60	128	2	7
1050	Carbon dioxide		78	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Gas Solubilities (GLE)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	403	265	n.a.	n.a.
1050	Carbon dioxide		n.a.	n.a.	5
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	37	n.a.	n.a.	n.a.
1050	Carbon dioxide		n.a.	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	n.a.	n.a.	69
1050	Carbon dioxide		n.a.	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**(A)zeotropic Data (AZD)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	29	2	n.a.	11
1050	Carbon dioxide		26	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	1	1	n.a.	6
1050	Carbon dioxide		9	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	26	15	2	145
1050	Carbon dioxide		24	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Critical Data of Mixtures (CRI)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	13	2	n.a.	n.a.
1050	Carbon dioxide		9	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	21	n.a.	11	157
1050	Carbon dioxide		18	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Mixture Surface Tensions (MSFT)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	70	28	n.a.	38
1050	Carbon dioxide		n.a.	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	n.a.	n.a.	6
1050	Carbon dioxide		1	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	2	2	n.a.	1
1050	Carbon dioxide		18	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Mixture Dielectric Constants (MDEC)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	n.a.	n.a.	n.a.	4
1050	Carbon dioxide		n.a.	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Mixture P-v-T Data (MPVT)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	173	12	n.a.	67
1050	Carbon dioxide		173	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Gas Hydrate Data (GHD)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	251	30	n.a.	n.a.
1050	Carbon dioxide		n.a.	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Electrical Conductivities (ECND)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	8	n.a.	n.a.	n.a.
1050	Carbon dioxide		n.a.	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Diffusion Coefficients (DIF)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	28	6	n.a.	9
1050	Carbon dioxide		12	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Further Thermodynamic Properties (X)**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	103	18	n.a.	18
1050	Carbon dioxide		14	n.a.	n.a.
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

**Total**
DDB#	Name	1050	1056	1764	2187	Methyldiethanolamine (MDEA)
174	Water	1588	631	15	570
1050	Carbon dioxide		520	n.a.	8
1056	Nitrogen			n.a.	n.a.
1764	Triethylenetetramine				n.a.

Dortmund Data Bank Version: February 2024

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