Long-term use of silver jewelry has little friction on the surface, and this phenomenon of blackening is more serious after being placed. The material of many silver ornaments is often silver-copper alloy, and this kind of silver ornaments should pay more attention to anticorrosion.
How to clean the silver bracelet when it turns yellow?
1, professional silver cloth
It's a special professional cloth, and then there will be silver powder on it, so it can be cleaned.
2. Silver washing water
For silver washing water, immersion method (except for the old process) or wiping method (except for platinum plating process and inlay process) can be used. Put the silver ornaments in silver washing water for about three minutes (if the oxidation is particularly serious, they can be stored for a long time), take them out and rub them repeatedly, rinse them with plenty of water, put them into alkaline sleep (such as washing powder water), and finally rinse them with water.
3. Silver ornaments on the outer flame of alcohol lamp can effectively remove oxidation.
In order to prevent the silver jewelry from yellowing, always keep it clean and dry, try not to let the silver jewelry come into contact with sulfur-containing chemical gases, and don't clean the silver jewelry with sulfur soap. Silver jewelry should be stored in a sealed and dry place when not in use.
Extended data
Restore luster
The following methods can also be used to restore the original luster of silver ornaments.
1. polishing method: this method is better for the head injury of plain silver, such as flowerless bracelets and collars. When polishing, you can use silk or toothbrush dipped in a small amount of toothpaste to polish it repeatedly at the place to be polished until the surface of the jewelry is as clean as new, and then wash it with water after polishing. However, this method is not very effective for ordinary carved or carved silver ornaments.
2, put some pieces of broken aluminum under the silver jewelry, and then put it in soda solution and heat it together to remove the black. Because soda is very alkaline and heated, this method cannot be used for silver jewelry with jewelry.
3. After cleaning with 1% hot fat room solution, soak the silver jewelry with sodium thiosulfate solution (photographic fixing solution, also known as Haibo), and then wipe it with toothbrush or fiber cloth.
4. If the black on the jewelry is heavy, it can also be washed with concentrated hydrochloric acid. After washing, it should be washed with clear water immediately. Jewelry inlaid with pearls, malachite and turquoise must not be washed with hydrochloric acid, otherwise it will damage the jewelry.
References:
Baidu Encyclopedia: Silver Jewelry