Foaminess of aqueous solutions of sodium acetate, sodium propionate, and sodium butyrate, and of dilute silica suspensions

Abstract

The foaminess of aqueous solutions of sodium acetate, sodium n-propionate, and sodium n-butyrate, and of an 0.025% suspension of 30 mμ silica particles was studied by the pneumatic method. Both the maximum foam height and the maximum collapse time of solutions of each salt were associated with the same concentration of solute, and the addition of silica did not shift this concentration appreciably, but did extend the concentration range of good foam height and stability.