The aim of this thesis was to examine how the addition of three ionic liquids ([MMIM]Cl,
[EMIM]Cl, [BMIM]Cl) affects the Krafft temperature (TK) of sodium dodecyl sulfate
(SDS). I determined TK by measuring the specific electrical conductivity of solutions as a
function of temperature. First, I determined the TK values for 20, 30, 40 mM SDS in a
0,01 M solution of ionic liquids. I found that the ionic liquids lowered the TK value and
that [BMIM]Cl, which has the longest alkyl chain, reduced TK the most due to the highest
hydrofobic character of the ionic liquid. I compared the results for SDS in water with
values from the literature and found that the TK value I determined was lower than the
literature value. I attributed this deviation to different experimental conditions and
potentially impure chemicals.
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