Many people like to wear some cleaning, especially silver. But there will be some problems with silver. For example, silver ornaments will turn black. What's the matter? Is it a physical problem? Come and have a look!
What's the reason for wearing silver to turn black
It is mainly the reaction between silver and sulfur that will cause the jewelry to turn black. The most important is the chemical reaction.
1. The reason why silver jewelry turns black is that silver reacts with sulfur in the air to form black silver sulfide. Therefore, silver jewelry can not be contacted with perfume, perfume powder, balsam, sulfur soap, sweat and sour town bleachers.
2. Each person's endocrine and physical conditions are different. Some people's sweat contains more acid, some people are less, and some people's body fluids contain more sulfur. These are substances that cause the silver surface to turn black. Therefore, each person wearing the silver will have different results. Some people will wear the silver for half a year to be bright as new.
3. The chemical properties of silver are relatively active. When encountering hydrogen sulfide gas or sulfur ion in the air, it is easy to form a kind of very difficult to dissolve silver salt. This chemical change can occur in very small amount. When encountering several trillion or even one tenth of hydrogen sulfide gas or sulfur ion in the air, silver will have a chemical reaction, forming a compound of sulfur and silver.
What's the constitution of wearing silver to turn black
It doesn't have much to do with the body. It's mainly silver that comes into contact with other substances, and the color changes.
1. The poisons referred to by the ancients mainly refer to the highly toxic arsenic, namely arsenic trioxide. Due to the backward production technology in ancient times, there were a small amount of sulfur and sulfide in the arsenic. The sulfur contained in the silver can react with silver to form a layer of black silver sulfide Ag2S on the surface of the silver needle. In modern times, the technology of producing arsenic is much more advanced than in ancient times. It is very pure and no longer involved in sulfur and sulfide. The chemical properties of silver metal are very stable and will not react with arsenic under normal conditions. Therefore, silver needle can not be used to identify poisons, not to mention as a tool for testing poisons.
2. In our daily environment, if the air quality is not good, there will also be some acid gas, hydrogen sulfide, nitric oxide and other compounds, which will also cause the silver jewelry to turn black. In addition, even under normal circumstances, silver jewelry wear for about half a year, the surface will also be oxidized, and the color will become dim and lose luster. Therefore, you can't judge your body condition according to whether you wear the silver ornament or not.
What to do if silver jewelry turns black
1. Scrub with toothpaste and toothbrush.
2. Apply lipstick to the cloth, wipe the silver ornament, and then rinse with water.
3. It is absolutely effective to apply the liquid on the silver ornament and wipe the silver ornament with a cloth before the liquid is dry.
4. The tea was soaked overnight.
5. Wipe with a silver cloth.
6. Use a silver wash for one to two minutes.
7. The silver ornament is coated with the modification liquid, and the silver ornament is wiped with a cloth before the modification liquid is dry.
8. Take out the silver ornaments and put them into cold water to wash them with a soft brush (such as toothbrush) covered with toothpaste or washing milk or salad.
9. Dry it with a hair dryer and wipe it with suede to make it as bright as new.