Salts of alkyl esters of<i>a</i>‐sulfopalmitic and<i>a</i>‐sulfostearic acids

Abstract

Abstract Lithium, ammonium, sodium, potassium, magnesium, and calcium salts of methyl, ethyl, propyl, isopropyl, butyl, isobutyl and secondary butyl esters of a ‐sulfopalmitic and a ‐sulfostearic acids were prepared for a study of structureproperty relations. The esters are easily biodegradable, have good foaming, detergent and lime soap dispersing properties and resist acid and alkaline hydrolysis. The a ‐sulfopalmitates are more soluble. Differences in the cation and the alcohol influence melting point, aqueous solubility, solubility in organic solvents, surface and interfacial tension, critical micelle concentration and emulsifying properties.