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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
8	1,2-Ethanediol	107-21-1	C₂H₆O₂	Overview	Details
91	Heptane	142-82-5	C₇H₁₆	Overview	Details
176	p-Xylene	106-42-3	C₈H₁₀	Overview	Details
284	N-Methyl-2-pyrrolidone	872-50-4	C₅H₉NO	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	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	7
91	Heptane		11	12
176	p-Xylene			4

**Heats of Mixing (HE)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	3	n.a.	1
91	Heptane		2	5
176	p-Xylene			5

**Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	60	11	n.a.
91	Heptane		6	84
176	p-Xylene			4

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	14	5	n.a.
91	Heptane		n.a.	9
176	p-Xylene			n.a.

**(A)zeotropic Data (AZD)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	1	5	2
91	Heptane		9	5
176	p-Xylene			4

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	2
91	Heptane		n.a.	n.a.
176	p-Xylene			1

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	n.a.
91	Heptane		8	3
176	p-Xylene			20

**Critical Data of Mixtures (CRI)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	1	n.a.	n.a.
91	Heptane		n.a.	1
176	p-Xylene			n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	4
91	Heptane		6	n.a.
176	p-Xylene			6

**Mixture Surface Tensions (MSFT)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	n.a.
91	Heptane		n.a.	1
176	p-Xylene			n.a.

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	n.a.
91	Heptane		n.a.	1
176	p-Xylene			4

**Further Thermodynamic Properties (X)**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	1	1	1
91	Heptane		n.a.	2
176	p-Xylene			n.a.

**Total**
DDB#	Name	91	176	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	80	22	17
91	Heptane		42	123
176	p-Xylene			48

Dortmund Data Bank Version: February 2024

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