4 ms·

I see this being repeated in a few places, but usually at least 70% alcohol is recommended to be effective.

• frabert 7y ago
  I have no sources for this, but I've heard that actually 70% is the optimal concentration, and that above that the alcohol is less effective. Something to do with not having enough water content to dissolve stuff, or something.
  • petre 7y ago
    It evaporates too fast. It's a problem I always have with isopropyl alcohol, you've got to move fast.
  • slavik81 7y ago
    A thread on that subject, "ELI5: How is that Alcohol 70% is better than Alcohol 90% as disinfectant?": https://www.reddit.com/r/explainlikeimfive/comments/erfec8/eli5_how_is_that_alcohol_70_is_better_than/ https://www.reddit.com/r/explainlikeimfive/comments/erfec8/e...