The Phase Equilibria Data Dialog is activated by clicking the left mouse button on the Phase Equilibria Section's data table control or by selecting the Edit Data command from the section's data table control commands menu. (See Data Commands Menu documentation for details.)

The Data dialog provides controls for displaying data, assigning source information, editing data values, sorting data, and regressing values.

1	Table Control: displays the current list of phase equilibria data. Each row contains temperature, pressure, and composition values. Clicking the left mouse button on a table row selects that table row. Clicking and holding the left mouse button down and then dragging the mouse will select several table rows. Double-clicking the left mouse button on a row selects the row and edits the contents of that row.
2	Edit Button: activates the Phase Equilibrium Datum dialog enabling you to enter the datum's state varaibles and source information. See the Phase Equilibria Datum Dialog documentation for details.
3	Commands Button: pressing the dialog's Commands button or clicking the right mouse button on the table control displays the commands menu. This menu provides standard commands for copying, pasting, and clearing phase equilibria data. See the documentation on Common Menu Commands for details.
4	Set Source: activates the Assign References and Comments dialog enabling you to assign a reference an comments to all selected datum rows. See documentation on the Assign References and Comments Dialog for additional details.)
5	Set Tie Line Button: prompts for a Tie Lines Prefix and Starting Value and then assigns a tie line to each selected datum value. See below for documentation.
6	Sort Button: the dialog's Sort button will be enabled if two or more rows are selected. Pressing the Sort button activates the Sort Attribute dialog. This dialog enables you to sort parameters in ascending or descending order by the selected attribute.
7	Regress Button: activates the Values Regression Dialog enabling you to fit a varieity of equations to the current data values. See the Regress Values Dialog documentation for details.
8	Add Rows Button: pressing the Add Rows button will add rows to the bottom of the table control.

In Cranium and Synapse, complementary equilibrium properties, e.g., the bubble point and the dew point, are entered as two separate properties. To associate one data value with its equilibrium value, you can assign the same tie line to both values.

Tie lines are automatically displayed on triangular graphs.

A value for a datum's tie line can be entered in the Phase Equlibria Datum dialog or by selecting one or more datum values and pressing the dialog's Set Tie Line button activates the Tie Line Dialog.

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