eli5: Why can’t you drink Demineralised Water?

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At my local hardware store they sell something called “Demineralised Water High Purity” and on the back of the packaging it says something like, “If consumed, rinse out mouth immediately with clean water.”

Why is it dangerous if it’s cleaner water?

In: Chemistry

19 Answers

Anonymous 0 Comments

When I was at university we went to a drug manufacturer. They had an industrial reverse osmosis purifier / demineraliser. We’re talking almost 100% pure, non-minearal water. They had a story that a colleague used that purified water in his car cooling loop and it ate the walls of the engine cooling loop … Imagine the damage it could do to you.

Maybe it was explained already, but minerals tend to migrate from a higher concentration medium to a lower one

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