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E-z-est Cleaner - Is It Meant For Clad Coins?

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Bedrock of the Community
United States
16156 Posts
 Posted 10/23/2019  3:29 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list Get a Link to this Reply

Quote:
A quick search on MS 70 shows bottles that proclaim it does not contain acid, so indeed, it is likely to be safer on clad.

That is true it isn't acidic, is is basic, and a base can be just as corrosive as an acid.
Gary Schmidt
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United States
2881 Posts
 Posted 10/23/2019  8:03 pm  Show Profile   Bookmark this reply Add tdziemia to your friends list Get a Link to this Reply
New Member
United States
14 Posts
 Posted 11/14/2019  6:22 pm  Show Profile   Bookmark this reply Add MartinezCoin to your friends list Get a Link to this Reply
Best to rinse your coins off by pouring water over them not by dipping them in bowls. Also E-Z-Est is specifically for silver not for clad coinage.
Valued Member
United States
388 Posts
 Posted 11/16/2019  12:49 am  Show Profile   Bookmark this reply Add johnny676767 to your friends list Get a Link to this Reply
Honest question here- why are you dipping?
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Australia
13240 Posts
 Posted 11/16/2019  06:54 am  Show Profile   Bookmark this reply Add Sap to your friends list Get a Link to this Reply
E-z-est a.k.a. JeweLuster is, as noted above, specifically designed for removing tarnish from silver coins. It contains sulfuric acid and thiourea. "Tarnish" is silver sulfide, and silver sulfide readily reacts in such a solution, forming a silver-thiourea complex which is water-soluble, so the tarnish simply dissolves away. Hydrogen sulfide gas is also formed as a by-product, which is why silver-coin-dippers will often notice a "rotten egg smell" as they work. Silver metal is relatively resistant to such acids, so the bare metal of a silver coin is almost* unaffected by it.

* - the use of tarnish-removing chemicals on silver coins can be proven in a court of law, if and when people are inclined to do so.

However, dilute sulfuric acid will readily dissolve copper and nickel metal, as well as alloys thereof. The presence of thiourea is irrelevant in such a circumstance, it is only the sulfuric acid that will react. Dilute sulfuric acid attacks and dissolves the metal directly, though of course it will also attack and dissolve any corrosion products on the coin's surface. The end result will be an acid-etched coin, which will look duller and less attractive than a coin that was never tarnished-and-dipped. The acid will also create microscopic pits and bumps in the coin's surface, increasing the surface area of the coin. This has the result of "activating" the surface, so that it will tarnish much faster in the future.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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United States
176 Posts
 Posted 11/16/2019  09:40 am  Show Profile   Check CarlOmaha's eBay Listings Bookmark this reply Add CarlOmaha to your friends list Get a Link to this Reply
Johnny676767,

I am dipping clad coins for my albums.

For example, I cannot find a nice 1975 Mint Set that does not have "yellow" Ikes or Kennedys. The same with other coins from sets. I prefer a more attractive coin (even if it is "cleaned") for my collection.
Bedrock of the Community
United States
18975 Posts
 Posted 11/16/2019  09:51 am  Show Profile   Bookmark this reply Add just carl to your friends list Get a Link to this Reply
It is a shame that so many don't realize that when a coin is cleaned, it is not only dirt that comes off, but a bit of metal too.
just carl
Valued Member
United States
176 Posts
 Posted 11/16/2019  10:08 am  Show Profile   Check CarlOmaha's eBay Listings Bookmark this reply Add CarlOmaha to your friends list Get a Link to this Reply
Thank you, Sap, for that great lesson!!
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