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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
161	Toluene	108-88-3	C₇H₈	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	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	1	7
91	Heptane		52	12
161	Toluene			10

**Heats of Mixing (HE)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	3	3	1
91	Heptane		18	5
161	Toluene			11

**Gas Solubilities (GLE)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	1	n.a.
91	Heptane		n.a.	n.a.
161	Toluene			1

**Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	60	42	n.a.
91	Heptane		9	84
161	Toluene			47

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	14	14	n.a.
91	Heptane		n.a.	9
161	Toluene			n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	n.a.
91	Heptane		8	n.a.
161	Toluene			4

**(A)zeotropic Data (AZD)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	1	6	2
91	Heptane		44	5
161	Toluene			9

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	2
91	Heptane		3	n.a.
161	Toluene			1

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	1	n.a.
91	Heptane		49	3
161	Toluene			14

**Critical Data of Mixtures (CRI)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	1	n.a.	n.a.
91	Heptane		n.a.	1
161	Toluene			n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	1	4
91	Heptane		18	n.a.
161	Toluene			10

**Mixture Surface Tensions (MSFT)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	n.a.
91	Heptane		5	1
161	Toluene			n.a.

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	1	n.a.
91	Heptane		8	1
161	Toluene			1

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	n.a.
91	Heptane		5	n.a.
161	Toluene			n.a.

**Mixture P-v-T Data (MPVT)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	n.a.
91	Heptane		3	n.a.
161	Toluene			n.a.

**Diffusion Coefficients (DIF)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	n.a.	n.a.	n.a.
91	Heptane		6	n.a.
161	Toluene			n.a.

**Further Thermodynamic Properties (X)**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	1	1	1
91	Heptane		1	2
161	Toluene			n.a.

**Total**
DDB#	Name	91	161	284	N-Methyl-2-pyrrolidone
8	1,2-Ethanediol	80	71	17
91	Heptane		229	123
161	Toluene			108

Dortmund Data Bank Version: February 2024

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