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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
144	Pyridine	110-86-1	C₅H₅N	Overview	Details
174	Water	7732-18-5	H₂O	Overview	Details
31522	Methyltriphenylphosphonium bromide	1779-49-3	C₁₉H₁₈BrP	Overview	Details

Search for mixtures containing this mixture as subsystem

Mixture Data

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**Vapor-Liquid Equilibria (VLE)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	66	1
91	Heptane		11	2	n.a.
144	Pyridine			30	n.a.
174	Water				n.a.

**Heats of Mixing (HE)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	3	1	18	n.a.
91	Heptane		10	19	n.a.
144	Pyridine			19	n.a.
174	Water				n.a.

**Gas Solubilities (GLE)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	1	n.a.
91	Heptane		n.a.	5	n.a.
144	Pyridine			1	n.a.
174	Water				n.a.

**Activity Coefficients at Infinite Dilution (Pure Solvents) (ACT)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	60	n.a.	19	n.a.
91	Heptane		3	63	n.a.
144	Pyridine			21	n.a.
174	Water				n.a.

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	14	n.a.	n.a.	n.a.
91	Heptane		1	46	n.a.
144	Pyridine			n.a.	n.a.
174	Water				n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	47	1
91	Heptane		1	n.a.	n.a.
144	Pyridine			1	n.a.
174	Water				n.a.

**(A)zeotropic Data (AZD)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	1	1	43	n.a.
91	Heptane		13	20	n.a.
144	Pyridine			32	n.a.
174	Water				n.a.

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	30	5
91	Heptane		2	n.a.	n.a.
144	Pyridine			5	n.a.
174	Water				n.a.

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	243	6
91	Heptane		5	42	n.a.
144	Pyridine			54	n.a.
174	Water				n.a.

**Critical Data of Mixtures (CRI)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	1	n.a.	n.a.	n.a.
91	Heptane		n.a.	12	n.a.
144	Pyridine			n.a.	n.a.
174	Water				n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	163	4
91	Heptane		n.a.	1	n.a.
144	Pyridine			11	n.a.
174	Water				n.a.

**Mixture Surface Tensions (MSFT)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	30	2
91	Heptane		n.a.	14	n.a.
144	Pyridine			11	n.a.
174	Water				n.a.

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	48	n.a.
91	Heptane		n.a.	n.a.	n.a.
144	Pyridine			6	n.a.
174	Water				n.a.

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	80	n.a.
91	Heptane		n.a.	n.a.	n.a.
144	Pyridine			1	n.a.
174	Water				n.a.

**Mixture Dielectric Constants (MDEC)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	42	n.a.
91	Heptane		1	n.a.	n.a.
144	Pyridine			5	n.a.
174	Water				n.a.

**Mixture P-v-T Data (MPVT)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	25	n.a.
91	Heptane		n.a.	23	n.a.
144	Pyridine			n.a.	n.a.
174	Water				n.a.

**Mixture Flash Points (MFLP)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	n.a.	n.a.
91	Heptane		n.a.	n.a.	n.a.
144	Pyridine			1	n.a.
174	Water				n.a.

**Electrical Conductivities (ECND)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	9	4
91	Heptane		n.a.	n.a.	n.a.
144	Pyridine			n.a.	n.a.
174	Water				n.a.

**Diffusion Coefficients (DIF)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	n.a.	n.a.	3	n.a.
91	Heptane		n.a.	n.a.	n.a.
144	Pyridine			4	n.a.
174	Water				n.a.

**Further Thermodynamic Properties (X)**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	1	2	40	1
91	Heptane		n.a.	12	n.a.
144	Pyridine			15	n.a.
174	Water				n.a.

**Total**
DDB#	Name	91	144	174	31522	Methyltriphenylphosphonium bromide
8	1,2-Ethanediol	80	4	907	24
91	Heptane		47	259	n.a.
144	Pyridine			217	n.a.
174	Water				n.a.

Dortmund Data Bank Version: February 2024

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