need help w/distilled water coins

[Moe (fl)]

I am posting this here to see if I get some answers.

I have a encrusted silver coin and encrusted copper coin in distilled water. I was told that distilled water is a weak form of acid. I also read that distilled water can dissolve metal over time.

My questions:

-Is there a risk in leaving these encrusted coins submerged in distilled water for long periods of time (i.e. months)? I change the water every week and always find salts and pieces of encrustation coming off. Does this mean that the cleaning process is working?

Thank you for any responses.

Moe

[Cubfan64]

distilled water contains no acid. it will not harm coins no matter how long you soak them. distilled water has no minerals, chemicals or anything in it. it is only water.....tap water on the other hand .

Distilled water is actually slightly acidic in practice - the reason being that as soon as it's been distilled, it slowly begins absorbing carbon dioxide from the atmosphere. Within a day or two, the pH can drop to as low as 5.5-6.

I would say you have nothing to worry about though - especially if you are changing the water on a daily basis.

[Trez]

"Distilled water is nonconductive but is still corrosive; water is said to be the universal solvent"


Keep your silver and copper items seperate from each other when using distilled water...

You'll be fine...for what your doing.
Use rain-water for electrolysis...

Trez