Why do we often use 70% ethanol instead of absolute ethanol for antisepsis and disinfection??

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Leonid V Vladimirov

"The antiseptic effect of an aqueous solution of alcohol is increasing with increasing concentration over 60%, BUT falls sharply in concentrated ethanol solution. That's why you should not treat hands with pure alcohol - this will not give the necessary disinfecting effect"

http://dezr.ru/rubriki-izdaniya/ispolzovanie-dezinfitsiruyushchikh-sredstv/47-spirty-i-ikh-ispolzovanie-v-gigiene-ruk-meditsinskogo-personala

Alemu Tekewe Mogus

Dear Leonid,

Many thanks for your answer and for sharing the information. I appreciate it!