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Dortmund Data Bank
Thermophysical Data for Process Design
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DDB#	Name	CAS-RN	Formula
89	Hexane	110-54-3	C₆H₁₄	Overview	Details
97	2,2,4-Trimethylpentane	540-84-1	C₈H₁₈	Overview	Details
174	Water	7732-18-5	H₂O	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	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	1	32	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			32

**Heats of Mixing (HE)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	2	16	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			7

**Gas Solubilities (GLE)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	7	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			n.a.

**Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	2	80	n.a.
97	2,2,4-Trimethylpentane		21	n.a.
174	Water			n.a.

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	58	n.a.
97	2,2,4-Trimethylpentane		17	n.a.
174	Water			n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			69

**(A)zeotropic Data (AZD)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	37	n.a.
97	2,2,4-Trimethylpentane		5	n.a.
174	Water			11

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			6

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	2	43	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			145

**Critical Data of Mixtures (CRI)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	22	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	2	n.a.	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			157

**Mixture Surface Tensions (MSFT)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	27	n.a.
97	2,2,4-Trimethylpentane		1	n.a.
174	Water			38

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			6

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	1	n.a.	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			1

**Mixture Dielectric Constants (MDEC)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			4

**Mixture P-v-T Data (MPVT)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	146	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			67

**Diffusion Coefficients (DIF)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	3	n.a.	n.a.
97	2,2,4-Trimethylpentane		n.a.	n.a.
174	Water			9

**Further Thermodynamic Properties (X)**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	n.a.	32	n.a.
97	2,2,4-Trimethylpentane		4	n.a.
174	Water			18

**Total**
DDB#	Name	97	174	2187	Methyldiethanolamine (MDEA)
89	Hexane	13	500	n.a.
97	2,2,4-Trimethylpentane		48	n.a.
174	Water			570

Dortmund Data Bank Version: February 2024

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