QUANTITATIVE-EVALUATION OF THE EFFECT OF ALKYL CHAIN-LENGTH, ADDED ALCOHOLS AND OR ELECTROLYTE ON KRAFFT POINT OF LINEAR 1-PHENYLALKANE SODIUM SULFONATES

Linear 1-phenylalkane sodium sulphonates were prepared and their Kraff t points were measured in presence of some added alcohols and/or elect rolyte. Several equation models were investigated to evaluate the effe ct of alkyl chain length (hydrocarbon tail), added alcohols and/or ele ctrolyte on their Krafft points. The Krafft point was found to correla te linearity with the number of carbon atoms in the alkyl chain, the a dded electrolyte weight%, and the square root of the added alcohol wei ght%. High values of R2 and F-ratio were obtained giving an indication that these equation models could be employed as predictive ones.