I've done but don't remember any more.
2007-01-04 17:35:50 · 6 answers · asked by riz 1 in Science & Mathematics ➔ Chemistry
Um, well it depends on what the coin is made of. If it is a valuable coin, I wouldn't put anything on it since you might damage the coin. Otherwise, just try polishing it with a nice cloth, or if you want a more involved approach, you could go to an auto parts store, purchase some very fine sandpaper (get the finest you can find, maybe around 800 grit), and try shining it by scraping.
2007-01-04 17:47:32 · answer #1 · answered by veldel37 2 · 0⤊ 0⤋
A commercial product i've used is sold under the name Tarn-X. The active ingredient is thiourea. The MSDS for the product may be found at
http://householdproducts.nlm.nih.gov/cgi-bin/household/brands?tbl=brands&id=10006001
It's actually pretty mild, but surprisingly effective at removing tarnish from copper and nickel-based coins. I'd be careful trying to clean any siver coins. you may remove some of the base material.
2007-01-05 16:14:21 · answer #2 · answered by mad-dog101 2 · 0⤊ 0⤋
Ammonium hydroxide....also a common jewelry cleaner.
2007-01-05 06:25:09 · answer #3 · answered by Stonerscientist 2 · 0⤊ 0⤋
if it is made of metal other than gold ,silver u can clean it with dil hcl other wise use ammonium hydroxide
2007-01-06 10:39:46 · answer #4 · answered by santhosh 1 · 0⤊ 0⤋
use vinegar and baking soda or lime juice together.or u could just use some soda drink like Pepsi or coke.
2007-01-05 01:46:11 · answer #5 · answered by jake's fan 1 · 0⤊ 0⤋
actually i believe it would be a mixture of sodiumcarbonate ,, ammonium carbonate and vinegar(acetic acid)
2007-01-08 14:12:30 · answer #6 · answered by Anonymous · 0⤊ 0⤋