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"The presence of water is a crucial factor in destroying or inhibiting the growth of pathogenic microorganisms with isopropyl alcohol. Water acts as a catalyst
by mthoodlum 6y ago
"The presence of water is a crucial factor in destroying or inhibiting the growth of pathogenic microorganisms with isopropyl alcohol. Water acts as a catalyst and plays a key role in denaturing the proteins of vegetative cell membranes. 70% IPA solutions penetrate the cell wall more completely which permeates the entire cell, coagulates all proteins, and therefore the microorganism dies. Extra water content slows evaporation, therefore increasing surface contact time and enhancing effectiveness. Isopropyl alcohol concentrations over 91% coagulate proteins instantly. Consequently, a protective layer is created which protects other proteins from further coagulation."
Many viruses have a hydrophilic outer membrane and the water helps the alcohol to penetrate the virus.
- nodesocket 6y agoThank you, I immediately hit back when I saw how long that article was.
- PostOnce 6y agoThe second sub-heading asks the question, and answers it in the first paragraph, so you can gain the answer without reading the entire article; if it grips you, then you can keep reading.
- penguin_booze 6y agoI relate with you. I wish articles also published a TLDR version. Personally, I've trouble focusing if the content is less engaging, or am there just to know the gist. I suspect I've ADD-like traits - when I see an article beginning like "it was a warm sunny day in...", I say, "OK, maybe later". I however do appreciate long read articles have their place. So far I've noticed only Business Insider does this on their articles.
- debian3 6y ago« It was a warm sunny day in... » and i saw your comment on ADD, i was thinking it’s not really how or it works. It’s that you can’t focus on what your are reading. You start thinking about something else while reading and you don’t even notice it. « ...the end. » damn it. Let’s read it again « It was a warm sunny day in... » and I’m telling you it’s the worst thing ever because you can’t control it, no matter how hard you tell yourself I need to focus on it. It’s not a conscious decision to procrastinate. « ... the end. » Shit, again? At least that’s how it is for me.