Influence of the Hofmeister anions on self-organization of 1-decyl-3-methylimidazolium chloride in aqueous solutions

► Micelle formation of an IL with K+ salts was investigated with conductivity and calorimetry. ► Effect of concentration, nature of the anion and temperature on micelle formation were studied. ► CMC and degree of micelle ionization were influenced by salts in the order of Cl− < Br− < NO3- < I−.