Hello. Where can I find the equilibrium constants (unit of molarity^-1) of common surfactants like SDS, CTAB, Triton X-100 in water (specifically!) at room temperature?
You cannot.The constants change according to the adsorbent, temperature, pH, model or whether it will rain that day or maybe even your economic situation. There is a proverb in Turkish that says 'the match is won on the field'. So you have to try and see.
The equilibrium constants depend on the equilibrium process (chemical reaction). Equilibrium processes: chemical reaction, micellization, adsorption. To determine it, the concentrations of substances involved in the equilibrium are necessary. Look up the chemical equilibrium section in the Temins Dictionary for Students
Data Yu. A. Mirgorod, R.V. Grebennikova. Glossary on Physical Chemistry