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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
614	1,4-Butanediol	110-63-4	C₄H₁₀O₂	Overview	Details
13803	Choline chloride	67-48-1	C₅H₁₄ClNO	Overview	Details

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Mixture Data

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**Vapor-Liquid Equilibria (VLE)**
DDB#	Name	614	13803	Choline chloride
174	Water	14	10
614	1,4-Butanediol		n.a.

**Heats of Mixing (HE)**
DDB#	Name	614	13803	Choline chloride
174	Water	4	n.a.
614	1,4-Butanediol		n.a.

**Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)**
DDB#	Name	614	13803	Choline chloride
174	Water	19	n.a.
614	1,4-Butanediol		n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	614	13803	Choline chloride
174	Water	12	1
614	1,4-Butanediol		n.a.

**(A)zeotropic Data (AZD)**
DDB#	Name	614	13803	Choline chloride
174	Water	14	n.a.
614	1,4-Butanediol		n.a.

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	614	13803	Choline chloride
174	Water	1	11
614	1,4-Butanediol		3

**Vapor-Liquid Equilibria of Electrolyte Systems (ELE)**
DDB#	Name	614	13803	Choline chloride
174	Water	n.a.	4
614	1,4-Butanediol		n.a.

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	614	13803	Choline chloride
174	Water	48	19
614	1,4-Butanediol		7

**Mixture Viscosities (VIS)**
DDB#	Name	614	13803	Choline chloride
174	Water	39	17
614	1,4-Butanediol		18

**Mixture Surface Tensions (MSFT)**
DDB#	Name	614	13803	Choline chloride
174	Water	2	n.a.
614	1,4-Butanediol		3

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	614	13803	Choline chloride
174	Water	25	1
614	1,4-Butanediol		n.a.

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	614	13803	Choline chloride
174	Water	1	n.a.
614	1,4-Butanediol		n.a.

**Mixture Dielectric Constants (MDEC)**
DDB#	Name	614	13803	Choline chloride
174	Water	35	n.a.
614	1,4-Butanediol		n.a.

**Electrical Conductivities (ECND)**
DDB#	Name	614	13803	Choline chloride
174	Water	n.a.	13
614	1,4-Butanediol		2

**Further Thermodynamic Properties (X)**
DDB#	Name	614	13803	Choline chloride
174	Water	4	5
614	1,4-Butanediol		1

**Total**
DDB#	Name	614	13803	Choline chloride
174	Water	218	81
614	1,4-Butanediol		34

Dortmund Data Bank Version: February 2024

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