DETHERM: Thermophysical Properties Database System
The Detherm system provides access to one of the world's largest
collections of thermophysical property data for both pure compounds and
For instance, in the field of vapour-liquid-equilibrium data, it
contains more than 95% of data published worldwide.
The Chemical Database Service supports user access to the system by
both the Detherm standard client/server and web browser interfaces.
Scope of the Database
|Identification of Substance
|Multicomponent System Properties
|Property Relation Information
||Data Type Information|
The Detherm database and associated software is maintained by
(Society for Chemical Engineering and Biotechnology) based in Frankfurt.
Data is compiled in cooperation with the FIZ CHEMIE in Berlin and
the DDBST GmbH, Oldenburg.
Detherm is in reality a collection of discrete property-orientated data files.
Each package is compiled and maintained by external experts.
This guarantees quality control and rigour in checking the quality of
More information on the various components data files is provided in a
Properties and Data Abstracted
Phase Equilibrium Data
(e.g. Vapour-Liquid Equilibria, Liquid-Liquid Equilibria,
Solid-Liquid Equilibria, Activity Coefficients
at Infinite Dilution, Gas Solubilities, Vapour Pressures)
(e.g. Viscosities, Thermal
Conductivities, Diffusion Coefficients)
(e.g. Excess Enthalpies, Excess
(e.g. Densities, Compressibility, Critical Data)
| Caloric Properties
(e.g. Specific Heat Capacity, Enthalpy, Entropy)
(e.g. Conductivities, Transference Numbers)
(e.g. Surface Tension)
Identification of Substance
(Systematical Name, Synonym, Formula, CAS-No.)
(Author, Journal, Volume, Year, Page, Coden, Abstract)
Sources of Information
Accessing the Data
Registered CDS users can access the database either using the
client/service or web browser interfaces.
The client is currently PC specific.
To download simply follow the links from the "Download" item on
the top Pulldown Menu on all CDS web pages.
You can access the web browser interface by first logging on then using the menu on the top pulldown menu on all CDS web pages.
Both Detherm interfaces are intuitive to use, and new users can
readily search for and download the all required data with minimal
The graphical display facilities allow display of aggregated data from
all the available data sources.
A good way to get an overview of the system is to see items from our
collection showing examples of Detherm in use.
These illustrate both the client/server and web browser access modes.
The illustrate how to login, search for properties, display results
and plot retrieved data points.
A poster giving brief of the Detherm service provided
by the CDS in the form of a
is available to download from this site.
Feel free to print and display this publically.
Go to the DECHEMA site for additional
technical details on the Detherm system.