What's going on when silver jewelry turns black overnight

summary

It is certain that silver jewelry will turn black overnight in our life. It is a normal natural phenomenon for silver jewelry to turn black. Some people will be surprised or indifferent. Because sulfur and oxides in the air and other natural media have a certain corrosive effect on silver, so after a period of time, some tiny spots will appear on silver jewelry and continue to spread, eventually turning black. I'll tell you what happened when silver jewelry became black overnight.

What's going on when silver jewelry turns black overnight

First: wipe with alcohol or sodium carbonate, the effect is very good. Mix 1 part of tartaric acid, 1 part of alum and 10 parts of salt, heat to boiling point, immerse jewelry in it; take it out after 10 minutes, wash it with water, and then dry it.

Second: wipe with cotton dipped in white vinegar, black silver sulfide will be dissolved in ester acid, or soak with overnight tea. Silver ornaments shine again.

Third: wash the surface of ornaments with detergent first, then wash with sodium thiosulfate solution (prepared by adding 20g sodium thiosulfate into 100g water), and then wash with clean water.

matters needing attention

Use toothpaste (as far as possible to choose a green transparent paste, this toothpaste granule is fine, avoid scratching the silver surface), wipe the toothpaste directly on the silver ornament, wipe it, then add a little bit of water, rub the foam, if there is a place to use the toothbrush to brush, avoid foam entering the seam.