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 Dortmund Data Bank
Thermophysical Data for Process Design
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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
4966 Potassium sulfate 7778-80-5 K2O4S Overview Details
6325 Ammonium sulfate 7783-20-2 H8N2O4S Overview Details
32098 Dipotassium hydrogensulfate
dihydrogenphosphate		 H3K2O8PS Overview Details
1003168 Tetrapotassium hexaammonium penta(hydrogen
sulfate dihydrogen phosphate)		 K4(NH4)6H15(SO4)5(PO4)5 Overview Details
1003169 Diammonium hydrogen sulfate dihydrogen
phosphate		 (NH4)2H3(SO4)(PO4) Overview Details
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Mixture Data

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Vapor-Liquid Equilibria (VLE)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water 13 4 n.a. n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Heat Capacities of Mixtures, Excess Heat Capacities (CPE)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water 4 16 n.a. n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

(A)zeotropic Data (AZD)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water 9 n.a. n.a. n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Solid-Liquid Equilibria (SLE)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water 7 3 2 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Vapor-Liquid Equilibria of Electrolyte Systems (ELE)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water n.a. 71 20 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Densities and Volumes of Mixtures, Excess Volumes (VE)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water 15 83 40 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Salt Solubilities (ESLE)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water n.a. 254 184 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Critical Data of Mixtures (CRI)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water n.a. n.a. 1 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Mixture Viscosities (VIS)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water 14 80 23 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Mixture Surface Tensions (MSFT)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water n.a. 1 10 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Mixture Speeds of Sound (MSOS)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water n.a. 9 9 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Mixture Thermal Conductivities (MTCN)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water n.a. 12 8 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Mixture P-v-T Data (MPVT)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water n.a. 47 1 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Electrical Conductivities (ECND)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water n.a. 17 15 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Diffusion Coefficients (DIF)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water n.a. 1 1 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Further Thermodynamic Properties (X)
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water 1 18 15 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Total
DDB# Name 2421 4966 6325 32098 1003168 1003169 Diammonium hydrogen sulfate dihydrogen phosphate
174 Water 63 616 329 n.a. n.a. n.a.
2421 Phosphorus pentoxide n.a. n.a. n.a. n.a. n.a.
4966 Potassium sulfate n.a. n.a. n.a. n.a.
6325 Ammonium sulfate n.a. n.a. n.a.
32098 Dipotassium hydrogensulfate dihydrogenphosphate n.a. n.a.
1003168 Tetrapotassium hexaammonium penta(hydrogen sulfate dihydrogen phosphate) n.a.

Dortmund Data Bank Version: February 2024
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