[enraged_camel]

>>The commenter is explaining that potassium permanganate is harmless and usually used as a water purifier anyway.

Harmless at what level? Because even the most harmless chemical substance will become harmful at high enough doses.

[theophrastus]

wikipedia: LD50 (median [lethal] dose) 1090 mg/kg (oral, rat)[1] (a gram per kilogram is fairly non-toxic. NaCl (table salt) LD50 is ~3gram/kg)

[1] https://en.wikipedia.org/wiki/Potassium_permanganate

[hwillis]

The "pink" amount appears to be in the range of 1-3mg/L. So the LD50 for an 80kg man would be ~30,000 liters orally. That would certainly be lethal. The rule of thumb for this stuff is also "If it's pink, it's safe to drink"[1], as in pink is the minimum concentration to ensure safety. The only reason to avoid higher concentrations is that it will stain heavily.

1: http://bluecollarprepping.blogspot.com/2014/08/potassium-per...

[wwer]

Yup. I heard this di-Hydrogen Oxide can be fatal in very high ingestion cases.

[Coincoin]

I don't know why you are down voted. Your comment is the very first thing that went through my mind when I read the article.

Next time, you might want to use Di-hydrogen monoxide, it's a much scarier name. Everybody knows monoxide is dangerous on anything.