Determination of Krafft point and CMC of hexadecylpyridinium salts in electrolyte solutions

Effect of Hofmeister anions on micellization and micellar growth of the surfactant cetylpyridinium chloride

“…The Krafft temperature, where the hydrated solid surfactant is completely dissolved in water, was determined from the point where a noticeable abrupt change in the slope is found [33]. The temperature we found, 10.9°C (Table S1, supporting information), agrees well with reported data [34][35][36].…”

Surface Properties of Alkylpyridinium Chlorides and the Applicability of the Pendant Drop Technique

“…Because of the great variety of applications there are plenty of data on hexadecylpyridinium chloride. Our value for the system without salt (which is obtained from additional measurements with recrystallized surfactant) is identical to the results of all other investigations (6,7,10,11,23 (24). This is slightly larger than the value determined in the present work.…”

“…Quite a lot has been published on short-chain surfactants by Goralczyk (4,5); there is also some information on salts with chain lengths of 12 and 16 carbon atoms, but very little information is available on salts with chain lengths of 14 and 18 carbon atoms (6 -9). Even less is known about salts with counterions other than chloride and bromide (10,11).…”

System peaks in micellar electrophoresis: I. Utilization of system peaks for determination of critical micelle concentration

“…A number of methods have been reported for the determination of CMC [5] such as surface tension [6][7][8], conductivity [5,9], light scattering [10], spectrophotometry (dye solubilization procedures) [7], potentiometry [10], and CZE [11][12][13]. The value of CMC is generally determined from the change of the slope in the plot of the physical property of solution as a function of surfactant concentration [14,15] (see Fig.…”