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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
174	Water	7732-18-5	H₂O	Overview	Details
2421	Phosphorus pentoxide	1314-56-3	O₅P₂	Overview	Details
4128	Potassium hydroxide	1310-58-3	HKO	Overview	Details
6356	Potassium dihydrogen phosphate	7778-77-0	H₂KO₄P	Overview	Details
1003223	Potassium dihydrogen phosphate orthophosphoric acid		KH₅(PO₄)₂	Overview	Details

Search for mixtures containing this mixture as subsystem

Mixture Data

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**Vapor-Liquid Equilibria (VLE)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	13	3	n.a.	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Liquid-Liquid Equilibria (Miscibility Gaps) (LLE)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	n.a.	2	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Heat Capacities of Mixtures, Excess Heat Capacities (CPE)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	4	56	5	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**(A)zeotropic Data (AZD)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	9	n.a.	n.a.	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Solid-Liquid Equilibria (SLE)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	7	3	1	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Vapor-Liquid Equilibria of Electrolyte Systems (ELE)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	43	23	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Densities and Volumes of Mixtures, Excess Volumes (VE)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	15	119	19	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Salt Solubilities (ESLE)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	13	43	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Mixture Viscosities (VIS)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	14	33	12	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Mixture Surface Tensions (MSFT)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	8	5	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Mixture Speeds of Sound (MSOS)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	9	8	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Mixture Thermal Conductivities (MTCN)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	9	1	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Mixture Dielectric Constants (MDEC)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	20	n.a.	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Mixture P-v-T Data (MPVT)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	1	n.a.	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Electrical Conductivities (ECND)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	32	9	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Diffusion Coefficients (DIF)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	n.a.	3	n.a.	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Further Thermodynamic Properties (X)**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	1	23	4	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

**Total**
DDB#	Name	2421	4128	6356	1003223	Potassium dihydrogen phosphate orthophosphoric acid
174	Water	63	375	132	n.a.
2421	Phosphorus pentoxide		n.a.	n.a.	n.a.
4128	Potassium hydroxide			n.a.	n.a.
6356	Potassium dihydrogen phosphate				n.a.

Dortmund Data Bank Version: February 2024

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