Chemical Properties
Sodium isethionate is a colorless, syrupy, strongly acidic liquid that can form detergents with oleic acid. It is an organic salt and an important intermediate for pharmaceuticals, cosmetics and daily chemicals.
Uses
Isethionic acid sodium salt is an amphoteric detergent used in detergent bar soaps. It makes a dense lather in addition to the lather made by the soap. It is mild on the skin, and non-drying. It works equally well in soft or hard water. It is also an anti-static agent in shampoos.
Preparation
Sodium isethionate is synthesized by the condensation reaction of sodium bisulfite and ethylene oxide.
Application
Sodium Isethionate works as an amphoteric detergent and can also be used as an intermediate in preparing surfactants derived from fatty acid sulfoalkyl esters (acyloxy ethane sulfonate). Sodium Isethionate increases the formulation's stability, improves the detergency in hard water, and is smooth to the skin. It is used in cleaning/washing agents, disinfectants, cosmetics, surface-active agents, shampoos, and bubble baths.
Flammability and Explosibility
Non flammable
References
[1] Mohammed I. Jeraal*. “Process-Focused Synthesis, Crystallization, and Physicochemical Characterization of Sodium Lauroyl Isethionate.” ACS Sustainable Chemistry &Engineering 6 2 (2017): 2667–2675.
[2] Ianniello, R. “Ion Chromatographic Determination of Sodium Isethionate.” Journal of Liquid Chromatography &Related Technologies 11 1 (1988): 2305–2314.
[3] Henrik T. Rasmussen, Bruce P. McPherson, Nicholas Omelczenko. “Analysis of sodium isethionate in soap and lye process streams by suppressed ion chromatography.” Journal of the American Oil Chemists Society 70 7 (1993): 733–734.
