Abstract
Abstract The solubilities of lysophosphatidylethanolamine in some organic solvents have been determined. Surface tension measurements of aqueous sols showed it to have pronounced surface-active properties. There was a surface ageing effect which was followed by a rise in the surface tension. Possible explanations for these effects are given. The effects of concentration, pH, mono- and divalent salts on the surface activity have been investigated. The critical micelle concentration was in the range 0·001 to 0·002 per cent w/v. The isoelectric point was at pH 3·25. The stability of sols of the phosphatide in the presence of mono- and divalent salts has also been examined.
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