Studies on the Detergency Evaluation (IV). The Efect of Carboxy-Methyl Cellulose

摘要

(1) The detergent efficacy of C.M. C. 100% represents as low value as that of distilled water. Accordingly, it will be concluded that C. M.C. itself has no detergent power. (2) Mixture of cleanser and C. M. C., when its mixed proportion is pertinent, indicates higher detergent efficacy than clear,ser 100% and the most effective mixtureproportion of cleanser and C.M.C. is 60% to 40%. It is supposed that the solution thus mixed accelerates the emulsification of greasy substance, C. M.C. promotes the emaulsifing of oily dirt and rises the effect of cleansing.(3) Of three kind of cleansers, i. e. Lauryl Sulfate, Na-Oleate and Na-Dodecyl Benzene Sulfonate, Na-Oleate is the most efficient in detergent power, and Na-Dodecyl Benzene Sulfonate is the least efficient.(4) In any kind of cleanser. 0.3% density solution indicates more efficient detergent bower than 0.1% density solution.