DISINFECTING LIQUID FOR EXTERNAL USE

PURPOSE:To obtain a disinfecting liquid for external use containing an alkylbenzyldimethylammonium and a water-soluble negatively charged polymer as essential ingredients, excellent in humectant properties for preventing hands from roughening. CONSTITUTION:This disinfecting liquid for external use comprises (A) an alkylbenzyldimethylammonium or its salt (preferably, benzalkonium chloride or benzethonium chloride) and (B) a water-soluble negatively charge polymer and/or its salt (preferably, hyaluronic acid or its salt) as essential ingredients, and (C) 30-65wt./vol.% an aqueous solution of ethanol as a preferable solvent. The concentrations of the ingredients are preferably 0.05-0.5 (wt./vol.)% ingredient (A), 0.001-0.3 (wt./vol.)% ingredient (B) and 30-60 (wt./vol.)% ingredient (C). The disinfecting liquid for external use comprises, e.g. 40-60 (wt./vol.)% aqueous solution of ethanol containing 0.1-0.3 (wt./vol.)% benzalkonium chloride or benzethonium chloride, 0.002-0.05 (wt./vol.)% sodium hyaluronate or sodium hyaluronate and succinylated carboxymethylchitosan.