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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
91	Heptane	142-82-5	C₇H₁₆	Overview	Details
96	Diisopropyl ether	108-20-3	C₆H₁₄O	Overview	Details
97	2,2,4-Trimethylpentane	540-84-1	C₈H₁₈	Overview	Details
161	Toluene	108-88-3	C₇H₈	Overview	Details
176	p-Xylene	106-42-3	C₈H₁₀	Overview	Details

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Mixture Data

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**Vapor-Liquid Equilibria (VLE)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	9	6	52	11
96	Diisopropyl ether		6	15	n.a.
97	2,2,4-Trimethylpentane			22	3
161	Toluene				9

**Heats of Mixing (HE)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	5	5	18	2
96	Diisopropyl ether		3	3	2
97	2,2,4-Trimethylpentane			6	n.a.
161	Toluene				9

**Gas Solubilities (GLE)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	n.a.	n.a.	n.a.	n.a.
96	Diisopropyl ether		n.a.	1	n.a.
97	2,2,4-Trimethylpentane			1	n.a.
161	Toluene				1

**Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	5	2	9	6
96	Diisopropyl ether		n.a.	1	n.a.
97	2,2,4-Trimethylpentane			16	n.a.
161	Toluene				3

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	1	2	8	n.a.
96	Diisopropyl ether		n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane			6	n.a.
161	Toluene				1

**(A)zeotropic Data (AZD)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	9	5	44	9
96	Diisopropyl ether		5	15	n.a.
97	2,2,4-Trimethylpentane			12	2
161	Toluene				10

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	n.a.	2	3	n.a.
96	Diisopropyl ether		n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane			n.a.	n.a.
161	Toluene				6

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	3	26	49	8
96	Diisopropyl ether		7	6	2
97	2,2,4-Trimethylpentane			5	n.a.
161	Toluene				12

**Mixture Viscosities (VIS)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	7	13	18	6
96	Diisopropyl ether		4	n.a.	n.a.
97	2,2,4-Trimethylpentane			4	1
161	Toluene				9

**Mixture Surface Tensions (MSFT)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	n.a.	6	5	n.a.
96	Diisopropyl ether		n.a.	n.a.	1
97	2,2,4-Trimethylpentane			n.a.	n.a.
161	Toluene				n.a.

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	4	12	8	n.a.
96	Diisopropyl ether		1	3	n.a.
97	2,2,4-Trimethylpentane			13	1
161	Toluene				n.a.

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	n.a.	41	5	n.a.
96	Diisopropyl ether		n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane			1	n.a.
161	Toluene				n.a.

**Mixture P-v-T Data (MPVT)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	30	n.a.	3	n.a.
96	Diisopropyl ether		30	n.a.	n.a.
97	2,2,4-Trimethylpentane			n.a.	n.a.
161	Toluene				n.a.

**Mixture Flash Points (MFLP)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	n.a.	n.a.	n.a.	n.a.
96	Diisopropyl ether		n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane			1	n.a.
161	Toluene				n.a.

**Diffusion Coefficients (DIF)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	n.a.	4	6	n.a.
96	Diisopropyl ether		n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane			n.a.	n.a.
161	Toluene				n.a.

**Further Thermodynamic Properties (X)**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	n.a.	2	1	n.a.
96	Diisopropyl ether		n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane			n.a.	n.a.
161	Toluene				n.a.

**Total**
DDB#	Name	96	97	161	176	p-Xylene
91	Heptane	73	126	229	42
96	Diisopropyl ether		56	44	5
97	2,2,4-Trimethylpentane			87	7
161	Toluene				60

Dortmund Data Bank Version: February 2024

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