scaling equation

https://doi.org/10.1351/goldbook.15356
Dimensionless equation representing mutual solubilities in a number of chemically related liquid systems. Each mutual solubility is subtracted from the solubility at the critical solution point, and the temperature is divided by the critical solution temperature.
Source:
PAC, 2008, 80, 233. (Glossary of terms related to solubility (IUPAC Recommendations 2008)) on page 263 [Terms] [Paper]