Sterling silver
Sterling silver. February 2011 Chemically, silver is not very reactive—it does not react with or water at ordinary temperatures, so does not easily form a silver oxide. However, it is attacked by common components of : slowly appears as a black tarnish during exposure to airborne compounds of sulfur byproducts of the burning of fossil fuels and some industrial processes , and reacts to form silver oxide. As the purity of the silver decreases, the problem of or increases because other metals in the alloy, usually copper, may react with oxygen in the air.
The black Ag 2S is among the most salts in , a property that is exploited for separating silver from other. Sodium chloride NaCl or common table salt is known to corrode silver-copper alloy, typically seen in silver salt shakers where corrosion appears around the holes in the top. Several products have been developed for the purpose of polishing silver that serve to remove from the metal without damaging or warping it.
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Gallery of Sterling silver
