In simple words, it’s a thermophysical property datafile for process simulation software.
The IK-CAPE PPDX Format defines a neutral and manufacturer spanning file format for the exchange of thermophysical property data and model parameter. PPDX is an acronym for Physical Property Data Exchange. The format should enable one to exchange thermophysical property data, model parameters, and even calculation routes freely and unhampered between various software products in the field of Computer Aided Process Engineering (CAPE). The IK-CAPE PPDX format file can be imported or exported from DETHERM, Aspen Plus, DDB, etc. The IK-CAPE (*.ikc) file is an ASCII text file, so it can be read in a text editor.