I ran into an interesting thing recently. I was looking for a
cleaner to clean our tile. There was a product called “Kaboom
shower, tub and tile cleaner.” The warning label mentioned “Do not
let formula stay on metal-may discolor.” An inquisitive mind asks
what would it do to sterling silver? I sprayed some of the stuff on
some scrap silver and let it sit overnight. In the morning I had a
very black coat of oxidization on the silver.
According to the label the formula contains organic salts,
surfactants and fragrance. Contains no phosphorus.
The label warns to not mix with bleach, mildew stain remover or any
other household chemicals as hazardous gases may be released. It is
an irritant to skin and eyes. But then all oxidization agents are
much more of an irritant to eyes and skin.
Kaboom as an oxidization agent for sterling silver might be worth