User-Defined Property
This section is an extension of the above Section Append Database to develop and add user-defined-property database to the original database. Pandat™ allows user to define any property of a phase in a format similar to that of the Gibbs energy describing a disordered solution phase. Let U be the user-defined property and it is expressed as:
(1)
where 
is the molar fraction of component i and 
is the property of the pure component i, 
is the kth order interaction parameter between components i and j.
User can also define special properties associated with the properties of phases in the original database. Any phase property available from Pandat Table can be used for user-defined property, such as G, H, mu, and ThF. However, the star symbol in a property, like mu(*), cannot be used. User may refer to Chapter Property for more properties in detail.