What is the chemical reaction of the silver chain turning black

AG is oxidized to AG2O (black).

It may also be oxidized to Ag2S (black) by substances containing S-containing substances

Silver is oxidized to silver oxide. 4ag+o2=2ag2o

Here's how to deal with a blackened silver chain:

1. If the necklace turns black, you can use silver washing water to clean it, first soak the necklace in water for a few seconds, and then take it out and rinse it under clean water.

2. The blackened silver chain can be cleaned with Coke, first pour the Coke into the container, then put the silver chain into the Coke to soak, take out the silver chain after 3 or 4 hours, wash the Coke with water, and dry it with a cotton cloth.

3. Soak the necklace in soapy water for about ten minutes, and then wipe it repeatedly on the surface of the necklace with a soft cloth, wipe off the dark parts of the surface after oxidation, and finally rinse it with water.

The reason why the silver chain is blackened

1. Oxidation reaction.

First of all, the chemical properties of silver determine that the chemical properties of silver are not as stable as ** or platinum, and silver necklaces with no special treatment on the surface are very easy to lose their original luster due to oxidation or strong light exposure. In TV dramas, it is often seen that silver needles are used to test poison, which is poisonous, and the silver needles turn black. In fact, silver has undergone an oxidation reaction.

When silver comes into contact with oxygen, sulfur and other substances, it will oxidize and form oxides, which will lose its original luster and eventually turn black.

2. The purity of silver is related.

The purer the silver necklace, the faster the oxidation rate of the necklace, for example, the oxidation rate of 925 silver will be much slower than that of 999 silver.

Silver chains will change color. Like turning red and black. Is it really silver?

Hello dear, silver chains will change color. Like turning red and black. It's real silver.

Some silver jewelry will be red after wearing it for a period of time, not because of whether its silver content is sufficient, but because the silver is oxidized, the protective coating on the surface of the silver jewelry has been gone, and the silver is directly exposed to the air, and there will naturally be the possibility of blackening, yellowing and reddening. Solution: If you have just found that you can use a silver cloth to restore the brightness of the discoloration period, you can also use toothpaste or lipstick to temporarily solve it, so that the silver can be restored to its original brightness, but the time can not be kept for a long time.

Silverware itself is easily oxidized and has no necessary relationship with the physical condition, but it will be affected by the surrounding environment, so it is necessary to pay attention to avoid contact with cosmetics, perfumes, acids, alkalis, and vulcanized items as much as possible.

Because the chemical composition of silver is unstable, it will react with substances in the air, resulting in small black dots that spread into a single piece. It is a very natural and common phenomenon, and silver jewelry should not be allowed to come into contact with sweat, perfume, etc. too much. And don't go swimming with silver jewelry, wipe the idle silver jewelry with a cotton cloth and seal it.

Because the chemical composition of the silver mask is unstable, it will react with substances in the air, resulting in some small black dots, which will spread into a single piece. It is a very natural and common phenomenon, and silver jewelry should not be allowed to come into contact with sweat, perfume, etc. too much. And do not go swimming with silver ornaments, wipe off idle silver ornaments with a cotton cloth and seal them for preservation.

1. First of all, if you find that your silver necklace has turned black and oxidized, here I will teach you a few tricks, and the operation is also very simple, so that your silver necklace can restore its luster.

2. Here is the most commonly used method: first of all, you can use toothpaste to clean, this method is also more commonly used, only squeeze a little toothpaste, apply it on the silver necklace, and then rub the silver necklace a few times, clean it with water, and then use a clean cloth to dry it or use a hair dryer to dry it. However, this method will be more difficult to clean the dead corners, and it will not be so clean.

3. If you still feel uneasy, you can also use that kind of silver cloth. The silver cloth can be seen from the literal meaning of the special wipe silver jewelry, this cloth is also relatively soft. Only the use of this soft fabric will not damage the surface of the silver necklace, and this cloth also contains elements such as decontamination powder, so the use of this cloth can be a good way to remove the oxidation and blackening of the surface of the silver necklace.

But here I want to remind everyone that the silver cloth must not be cleaned with water, if you clean it, it will remove the dirt powder inside, if it is removed, it will have no effect. After wiping the silver necklace, although it will turn black, it doesn't matter, you can use it directly, and you can throw it away after you can't use it.

4. In fact, toothpaste and silver cloth are just a simple solution to the fundamental problem of oxidation and blackening of silver necklaces. If you want your silver necklace to be restored to the same condition as it was when you first bought it, you can only use this method, which is to re-polish and polish it! Only after re-polishing it can you completely remove the oxidized and blackened parts of your silver necklace; If you don't think it's good enough, you can also consider plating a protective layer on the necklace for a better effect, and it can also play a very good role in protecting your silver chain.