Abstract
SummaryA new titrimetric method for the measurement of lime‐soap dispersion is described. This method differs from previously reported ones in that it is a practical method,i.e., it measures lime‐soap dispersion for formulations over a range of water hardness. It is specifically designed for the study of toilet‐bar formulations but may be applied to any soap‐dispersant formulation. This method also makes manifest the coagulant (as opposed to dispersant) properties of anionic agents at high use concentrations, which may explain why dispersants reported satisfactory by previous tests have been found unsatisfactory in practice. The test is also capable of demonstrating the effect of composition of the formulation and the structure of the dispersant on the lime‐soap dispersion.
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