Simulis is ProSim's (website) thermodynamics software package. Cranium and Synapse can generate Simulis input files. These input files can contain both physical property data and parameters for physical property models. Once a file is generated, commands within Simulis can be used to load the contained physical property values into a process simulation.

The following window displays an example Simulis input file. Cranium and Synapse will also generate a ".xlog" log file that details the sources and procedures used to generate the exported physical property values.

1. Open a Knowledge Base using either Cranium or Synapse.
2. Click on the File menu and select the Export Values command.
3. The application will activate the KB Export Dialog.
4. Select 'ProSim Simulis Format' from the Output File Format list and press the Export button. The Create a Simulis XML Properties file dialog is activated.

   1	Browse button for entering the name of the export file.
   2	List of chemicals for selection.
   3	Commands for: Detail: shows details, e.g., structure and properties, about the selected chemical. Find: Use the Find Chemical dialog to find a chemical by its name, synonym, chemical formula, etc.
   4	Export button

5. Press the Browse button to select the file into which the exported values will be written.
6. Select a chemical from the central list. Use the Detail and Find buttons to facilitate your selection.
7. Finally press the dialog's Export button. Cranium or Synapse will compile and estimate the required physical properties, regress these properties into models if needed and write these values and parameters into the named Simulis export file.

The following input files were generated by exporting physical property values for cyclohexanol, ethyl acetate and ethanol.

Example File	Description
Cyclohexanol.xml	A Simulis XML input file containing physical property values and technique parameters for cyclohexanol.
EthylAcetate.xml	A Simulis XML input file containing physical property values and technique parameters for ethyl acetate.
Ethanol.xml	A Simulis XML input file containing physical property values and technique parameters for ethanol.
Ethanol.xlog	The log file created by the application documenting the data sources and estimation techniques used to generate the exported values for ethanol.

Topic	Description
Estimating Chemical Properties	a short video demonstrating how to estimate the physical properties of pure chemical using either Synapse or Cranium.
Estimating Mixture Properties	a short video demonstrating how to estimate the physical properties of mixtures using either Synapse or Cranium.
Getting Started using Cranium	provides a quick tour of Cranium's capabilities including physical property estimation and a discussion of structure editing.
Getting Started using Synapse	provides a quick tour of Synapse's capabilities including examples of chemical product design.