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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
89	Hexane	110-54-3	C₆H₁₄	Overview	Details
91	Heptane	142-82-5	C₇H₁₆	Overview	Details
128	Octane	111-65-9	C₈H₁₈	Overview	Details
237	Propane	74-98-6	C₃H₈	Overview	Details
1051	Methane	74-82-8	CH₄	Overview	Details
1054	Ethane	74-84-0	C₂H₆	Overview	Details

Search for mixtures containing this mixture as subsystem

Mixture Data

Number of available sets is shown

**Vapor-Liquid Equilibria (VLE)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	25	15	66	103	14
91	Heptane		15	21	80	35
128	Octane			38	35	14
237	Propane				143	90
1051	Methane					171

**Heats of Mixing (HE)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	4	8	3	6	3
91	Heptane		3	3	8	n.a.
128	Octane			3	2	2
237	Propane				13	28
1051	Methane					11

**Gas Solubilities (GLE)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	n.a.	1	6	17	6
91	Heptane		n.a.	2	21	10
128	Octane			3	15	3
237	Propane				1	n.a.
1051	Methane					n.a.

**Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	10	11	n.a.	n.a.	n.a.
91	Heptane		11	n.a.	n.a.	n.a.
128	Octane			n.a.	n.a.	n.a.
237	Propane				n.a.	n.a.
1051	Methane					n.a.

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	n.a.	n.a.	n.a.	13	n.a.
91	Heptane		n.a.	n.a.	3	n.a.
128	Octane			n.a.	n.a.	n.a.
237	Propane				n.a.	n.a.
1051	Methane					n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	4	1	n.a.	n.a.	n.a.
91	Heptane		1	n.a.	17	n.a.
128	Octane			n.a.	n.a.	n.a.
237	Propane				9	n.a.
1051	Methane					n.a.

**(A)zeotropic Data (AZD)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	19	16	6	28	4
91	Heptane		15	5	24	7
128	Octane			1	8	5
237	Propane				34	28
1051	Methane					53

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	n.a.	1	1	12	1
91	Heptane		2	1	5	1
128	Octane			n.a.	7	2
237	Propane				2	2
1051	Methane					5

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	42	29	n.a.	n.a.	n.a.
91	Heptane		65	n.a.	n.a.	n.a.
128	Octane			n.a.	n.a.	n.a.
237	Propane				4	40
1051	Methane					42

**Critical Data of Mixtures (CRI)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	2	3	4	11	3
91	Heptane		2	3	10	6
128	Octane			3	1	2
237	Propane				8	6
1051	Methane					6

**Mixture Viscosities (VIS)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	10	17	n.a.	5	1
91	Heptane		58	15	11	8
128	Octane			1	3	1
237	Propane				93	13
1051	Methane					43

**Mixture Surface Tensions (MSFT)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	1	7	9	1	n.a.
91	Heptane		n.a.	1	3	n.a.
128	Octane			n.a.	5	n.a.
237	Propane				5	n.a.
1051	Methane					9

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	9	4	n.a.	n.a.	n.a.
91	Heptane		6	n.a.	8	n.a.
128	Octane			n.a.	5	n.a.
237	Propane				21	n.a.
1051	Methane					11

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	49	4	n.a.	n.a.	n.a.
91	Heptane		1	n.a.	n.a.	n.a.
128	Octane			n.a.	n.a.	n.a.
237	Propane				12	n.a.
1051	Methane					1

**Mixture Dielectric Constants (MDEC)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	1	n.a.	n.a.	n.a.	n.a.
91	Heptane		n.a.	n.a.	n.a.	n.a.
128	Octane			n.a.	n.a.	n.a.
237	Propane				3	1
1051	Methane					6

**Mixture P-v-T Data (MPVT)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	3	33	9	30	n.a.
91	Heptane		8	6	82	10
128	Octane			13	10	6
237	Propane				160	88
1051	Methane					81

**Mixture Flash Points (MFLP)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	n.a.	2	n.a.	n.a.	n.a.
91	Heptane		3	n.a.	n.a.	n.a.
128	Octane			n.a.	n.a.	n.a.
237	Propane				n.a.	n.a.
1051	Methane					n.a.

**Diffusion Coefficients (DIF)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	6	n.a.	n.a.	11	8
91	Heptane		3	n.a.	5	n.a.
128	Octane			n.a.	11	8
237	Propane				15	1
1051	Methane					1

**Further Thermodynamic Properties (X)**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	1	2	2	5	2
91	Heptane		2	19	26	2
128	Octane			1	6	1
237	Propane				77	5
1051	Methane					65

**Total**
DDB#	Name	91	128	237	1051	1054	Ethane
89	Hexane	186	154	106	242	42
91	Heptane		195	76	303	79
128	Octane			63	108	44
237	Propane				600	302
1051	Methane					505

Dortmund Data Bank Version: February 2024

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