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Thermophysical Data for Process Design
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DDB#	Name	CAS-RN	Formula
31	Benzene	71-43-2	C₆H₆	Overview	Details
50	Cyclohexane	110-82-7	C₆H₁₂	Overview	Details
542	Sulfolane	126-33-0	C₄H₈O₂S	Overview	Details
3264	Tetra-n-butylammonium bromide	1643-19-2	C₁₆H₃₆BrN	Overview	Details

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Mixture Data

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**Vapor-Liquid Equilibria (VLE)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	168	20	n.a.
50	Cyclohexane		3	n.a.
542	Sulfolane			n.a.

**Heats of Mixing (HE)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	137	9	n.a.
50	Cyclohexane		1	n.a.
542	Sulfolane			n.a.

**Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	15	65	1
50	Cyclohexane		53	n.a.
542	Sulfolane			n.a.

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	n.a.	n.a.	n.a.
50	Cyclohexane		6	n.a.
542	Sulfolane			n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	16	n.a.	n.a.
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**(A)zeotropic Data (AZD)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	180	9	n.a.
50	Cyclohexane		4	n.a.
542	Sulfolane			n.a.

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	38	4	n.a.
50	Cyclohexane		2	n.a.
542	Sulfolane			n.a.

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	174	18	2
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Salt Solubilities (ESLE)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	n.a.	n.a.	1
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Critical Data of Mixtures (CRI)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	4	n.a.	n.a.
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	107	5	n.a.
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Mixture Surface Tensions (MSFT)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	15	n.a.	n.a.
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	65	n.a.	1
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	3	n.a.	n.a.
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Mixture Dielectric Constants (MDEC)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	3	6	2
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Mixture P-v-T Data (MPVT)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	13	n.a.	n.a.
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Electrical Conductivities (ECND)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	n.a.	n.a.	3
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Diffusion Coefficients (DIF)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	14	n.a.	n.a.
50	Cyclohexane		n.a.	n.a.
542	Sulfolane			n.a.

**Further Thermodynamic Properties (X)**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	44	n.a.	3
50	Cyclohexane		n.a.	1
542	Sulfolane			2

**Total**
DDB#	Name	50	542	3264	Tetra-n-butylammonium bromide
31	Benzene	996	136	13
50	Cyclohexane		69	1
542	Sulfolane			2

Dortmund Data Bank Version: February 2024

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