PCP - Pure Component Properties

Thermal Conductivity of Water

Following the great success of the Dortmund Data Bank (DDB) for mixture data (phase equilibria, excess properties, ...) and the models developed on the basis of these data (UNIFAC, mod. UNIFAC, PSRK, VTPR, LIQUAC, ...), the development of a pure component database (DDB-PCP) was a further step to supply the industry with the required experimental data, reliable predictive methods, reliable correlation parameters and modern software for the correlation and estimation of thermophysical data.

In cooperation with research groups in different countries and financed by the German and Austrian federal ministries for research and technology all worldwide published data are collected and stored in a factual database. In contrast to other collections, also East European and Asian literature is carefully evaluated, especially with respect to deposited documents.

The data bank was built up between 1992 and 2001 at

  • University of Oldenburg, Industrial Chemistry
  • DDBST GmbH, Oldenburg
  • Institute of Chemical Technology,Prague
  • Estonian Academy of Sciences
  • FIZ CHEMIE Berlin
  • Technical University of Minsk
  • Technical University of Graz

Since 2001 DDBST maintains the data bank, only the Estonian group is still entering some additional data, mainly from sources published in Russian. 

The current statistics of February 1st, 2017, shows all the available properties together with the number of components for which data are available, the number of references from which data have been obtained, and the number of sets:

#PropertyCompoundsReferencesSets
1 Dynamic Viscosity 4074 5253 26812
2 Vapor Pressure 19023 12689 58865
3 Critical Data 1261 1177 4486
4 Triple Point 493 387 771
5 Kinematic Viscosity 1302 435 2595
6 Density 13612 14255 78120
7 Melting Point 19168 8428 40859
8 Molar Heat Capacity (cP) 4254 3410 15732
9 Virial Coefficients 282 376 948
10 Heat of Vaporization 3591 1507 7018
11 Heat of Fusion 4001 2253 6836
12 Thermal Conductivity 1126 1396 12367
13 Boiling Point 24 6 30
14 Surface Tension 2910 1356 7510
15 Mass Heat Capacity 3 3 6
16 Entropy 1682 1140 2985
17 Std. Heat of Combustion 3448 1028 4789
18 Std. Heat of Formation 4664 1914 7953
19 Enthalpy (H-H0) 691 502 1074
20 Enthalpy (H-H298) 346 223 471
21 Gibbs Energy of Form./T 84 36 93
22 Gibbs Energy of Form. 93 61 105
23 G-function (G-G0)/T 1105 565 1794
24 Enthalpy (H-H298)/T 4 4 10
25 Enthalpy (H-H0)/T 167 102 284
27 Transition Temperature 2291 1199 5165
28 Heat of Transition 981 689 2410
29 Molar Heat Capacity (cV) 136 139 1438
30 Mass Heat Capacity (cV) 11 11 30
31 Ideal Gas Heat Capacity 1311 735 2308
33 Dielectric Constant 1427 1377 7818
34 Speed of Sound 1202 2226 12623
36 Diffusion Coefficient 99 39 162
37 Flash Point 637 125 1061
38 Molar Saturation Heat Capacity 60 21 153
39 Heat of Sublimation 873 414 1402
40 Entropy of Vaporization 96 45 106
41 Entropy of Fusion 841 290 952
43 Entropy of Transition 269 146 514
44 Entropy of Formation 101 64 113
45 Mass Saturation Heat Capacity 1 1 15
47 Gibbs Energy (G-G0) 5 3 10
48 Gibbs Energy (G-G298) 1 1 2
49 Enthalpy 60 27 130
50 Entropy (S-S0) 144 94 369
51 Entropy (S-S298) 26 24 40
52 Thermal Expansion Coefficient 105 27 459
53 Compressibility (isothermal) 64 17 169
54 Compressibility (isentropic) 136 68 379
55 Gibbs Energy of Sublimation 3 1 3
56 Entropy of Sublimation 29 10 29
57 G-function (G-G298)/T 2 1 2
58 Compressibility Factor (isothermal) 15 11 69
60 Joule-Thomson Coefficient (isenthalpic dT/dP) 14 13 112
61 Dipole Moment 111 21 115
62 Molar Polarization 46 9 49
63 Standard Heat of Vaporization 425 132 455
64 Standard Heat of Melting 56 15 58
65 Standard Heat of Sublimation 170 72 195
67 Freezing Point (Supercooled Liquid to Crystal/Solid only) 47 7 50
68 Decomposition Temperature 262 71 263
  Total 40294 37542 299902