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Thermophysical Data for Process Design
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DDB#	Name	CAS-RN	Formula
89	Hexane	110-54-3	C₆H₁₄	Overview	Details
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

Number of available sets is shown

**Vapor-Liquid Equilibria (VLE)**
DDB#	Name	91	96	97	161	176	p-Xylene
89	Hexane	25	n.a.	1	29	3
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	91	96	97	161	176	p-Xylene
89	Hexane	4	1	2	21	3
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	91	96	97	161	176	p-Xylene
89	Hexane	n.a.	n.a.	n.a.	1	n.a.
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	91	96	97	161	176	p-Xylene
89	Hexane	10	1	2	14	7
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	91	96	97	161	176	p-Xylene
89	Hexane	4	n.a.	n.a.	3	1
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	91	96	97	161	176	p-Xylene
89	Hexane	19	2	n.a.	20	3
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	91	96	97	161	176	p-Xylene
89	Hexane	n.a.	n.a.	n.a.	n.a.	n.a.
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	91	96	97	161	176	p-Xylene
89	Hexane	42	n.a.	2	17	6
91	Heptane		3	26	49	8
96	Diisopropyl ether			7	6	2
97	2,2,4-Trimethylpentane				5	n.a.
161	Toluene					12

**Critical Data of Mixtures (CRI)**
DDB#	Name	91	96	97	161	176	p-Xylene
89	Hexane	2	2	n.a.	2	n.a.
91	Heptane		n.a.	n.a.	n.a.	n.a.
96	Diisopropyl ether			n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane				n.a.	n.a.
161	Toluene					n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	91	96	97	161	176	p-Xylene
89	Hexane	10	4	2	27	2
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	91	96	97	161	176	p-Xylene
89	Hexane	1	n.a.	n.a.	n.a.	1
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	91	96	97	161	176	p-Xylene
89	Hexane	9	4	n.a.	8	n.a.
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	91	96	97	161	176	p-Xylene
89	Hexane	49	n.a.	1	43	29
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 Dielectric Constants (MDEC)**
DDB#	Name	91	96	97	161	176	p-Xylene
89	Hexane	1	n.a.	n.a.	5	n.a.
91	Heptane		n.a.	n.a.	n.a.	n.a.
96	Diisopropyl ether			n.a.	n.a.	n.a.
97	2,2,4-Trimethylpentane				n.a.	n.a.
161	Toluene					n.a.

**Mixture P-v-T Data (MPVT)**
DDB#	Name	91	96	97	161	176	p-Xylene
89	Hexane	3	n.a.	n.a.	11	n.a.
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	91	96	97	161	176	p-Xylene
89	Hexane	n.a.	n.a.	n.a.	n.a.	n.a.
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	91	96	97	161	176	p-Xylene
89	Hexane	6	n.a.	3	8	1
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	91	96	97	161	176	p-Xylene
89	Hexane	1	n.a.	n.a.	1	n.a.
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	91	96	97	161	176	p-Xylene
89	Hexane	186	14	13	210	56
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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