TCAQ: TCS Aqueous Solution Database Revision History
Current Database Version | |
---|---|
Database name (acronym): |
TCS Aqueous Solution Database (TCAQ) |
Database owner: |
Thermo‑Calc Software AB |
Database version: |
3.1 |
First release: |
TCAQ1 was originally released in 1996 |
Changes in the Most Recent Database Release

Software release version: 2020b (June 2020)
Minor bug fix for the confusing notation "HF" for both the element and the aqueous species.
Previous Releases

Software release version: 2016b (November 2016)
The TCAQ3 aqueous database has been updated so that all charged species (except H+1 and OH-1) are renamed with an extra prefix "A_". For example, FE+3 becomes A_FE+3, CO3-2 becomes A_CO3-2, and FEOH+2 becomes A_FEOH+2, and so forth. This change is to enable compatibility with otherdatabases where phases are described by ionic CEF (e.g. the spinel phase in the TCFE or TCNI databases).
It is necessary to keep the names H+1 and OH-1 for the POLY_3 module so that the LIST_EQUILIBRIUM command gives the correct pH value. Keeping these names is also required for POURBAIX Module calculations.