Abstract
AbstractThe solution characteristics of the system linear alkylbenzene sulfonate (LAS)/Ca++/builder were studied using a dynamic surface tension technique. The results showed that the rate of CA++/LAS interaction is slower than the CA++ binding rate of zeolite A. Consequently, zeolite A is effective in preventing precipitation of LAS by calcium ions. The data obtained from the study of Ca++ binding detergent builders on solubilization of Ca(LAS)2 showed that zeolite A was effective but the rate of solubilization was much slower than that for STPP. Incorporation of a small amount of phosphate with zeolite A in a detergent significantly increases the rate of solubilizing of Ca(LAS)2.
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