isoequilibrium relationship

A relationship analogous to the isokinetic relationship but applied to equilibrium data. The equation defining the isoequilibrium temperature $β$ is:

$Δ r H − β Δ r S = constant$

where $Δ H$ and $Δ S$ are enthalpy and entropy of reaction, respectively.

Source:

PAC, 1994, 66, 1077 (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1128