So, somehow, silver was getting deposited on the coin surface, then reacting with sulfur compounds in the environment to form silver sulfide, and then degrading to silver sulfate
, tarnishing the coin.
Immersion silver reacts with sulfur-bearing atmospheres to form nonconductive silver sulfate
, which then reacts with any exposed copper on the board to form nonconductive copper sulfate, which also causes board failure.
2]S), which can further oxidize to silver sulfate
But there are a number of other factors that can cause anosmia including silver sulfate
, doxyeyeline (an antibiotic), and a lack of zinc.