Copper will rot if soaked in water for a long time, and pure copper will be toxic if boiled in water

Copper will rust and even rot if soaked in water for a long time. In chemical terms, copper is defined as a *** (*** refers to a metal that is highly resistant to corrosion and oxidation). Copper's corrosion resistance is mainly due to the formation of a thin oxide film on the surface of copper when it is exposed to air and moisture.

This is known as patina.

The oxide layer adheres firmly to the outer surface of the copper and protects the underlying copper layer from further corrosive effects.

Most of the time, this patina layer is able to provide sufficient protection for the copper pipe to last a long time. However, changes in water chemistry, water quality, and other factors can gradually cause increasing water erosion of copper pipes. This increase in aggressiveness can sometimes outweigh the corrosion resistance of copper pipes and shorten their expected service life.

Pure copper can be toxic when boiled in water. Because copper is easy to decompose harmful substances after heating, pure copper will be toxic when boiled in water. Pure copper is a rose-red metal, which is purple after forming a copper oxide film on the surface, so industrial pure copper is often called copper or electrolytic copper.

The density is 8-9g cm3, melting point 1083 °C. Pure copper has good electrical conductivity, and is widely used in the manufacture of wires, cables, brushes, etc., and is often used to manufacture magnetic instruments that must be protected from magnetic interference, such as compass aviation instruments.

Applications

Pure copper is used in a much wider range than iron, and a large amount of copper is used in the electrical industry every year. Pure copper is mainly used to make generators, bus cables, switchgears, transformers and other electrical equipment and heat exchanger pipes, solar heating devices and other thermal conduction equipment.

Copper contains oxygen, and it is easy to mix a small amount of oxygen when smelting copper, which has a great impact on the conductivity, and the copper used in the electrical industry generally must be oxygen-free copper. Pure copper is also mainly used in the production of motor short-circuit rings, electromagnetic heating inductors, and high-power electronic components, terminal blocks and the like. Pure copper is also used in furniture and decoration such as doors, windows, handrails, etc.

Long-term immersion of copper materials in water may lead to the following changes and phenomena:

1.Oxidation: The reaction of copper with oxygen in water will gradually cause copper to produce oxides.

This oxide generally appears as a patina or copper-blue of different colors and is called aconite. It forms this filial piety on the surface of the copper material and may gradually form a dense oxide layer, called patina, to protect the copper material from further corrosion. Skin and copper oxides may alter the appearance of copper, making its surface dull or mottled in color.

2.Corrosion: Long-term immersion in water may affect copper materials from galvanic corrosion.

Especially if other chemicals such as salts, acids, or alkalis are present in the water, which can accelerate the corrosion process of copper. Corrosion causes the copper material to be gradually eroded and damaged, losing its original structure and strength.

3.Water quality effects: Copper can release trace amounts of copper ions from copper materials into water.

These copper ions may affect the quality of the water. At high concentrations, copper ions are potentially toxic to human health. In addition, if the copper material is soaked in water several times, the pH value of the water may be affected, and the dissolution of copper ions will make the water more acidic.

To avoid the above problems and keep the copper material in good condition for a long time, it is recommended to keep it away from water or ensure that the copper material is properly protected before being exposed to water, such as coating, sealing or using a suitable protective agent. If the copper has oxidized or corroded in water, you can try to clean and maintain it with appropriate cleaning methods or professional copper maintenance products. <>

Copper utensils will rust when left in water for a long time, that is, patina, commonly known as patina.

Brief introduction of patina: 1. Patina, commonly known as patina, is mainly composed of basic copper carbonate and the chemical formula is Cu2(OH)2CO3.

2. It is a substance produced by the reaction of copper with oxygen, carbon dioxide and water in the air, and its color is emerald green.

cu+h2o+o2+co2=cu2(oh)2co3

4. Preparation method: Sodium carbonate can be added to the dilute copper sulfate solution, or carbon dioxide can be passed into the copper hydroxide suspension to obtain basic copper carbonate precipitation.

5. Uses: used to make paint pigments, pyrotechnics, pesticides, other copper salts and solid phosphor activators, etc., and also used for seed treatment and fungicides. It is also used as a pigment.

You don't often use the faucet, you should have your faucet brass color. When brass oxidizes, it becomes patina or patina, which is the same as iron rusting.

Copper will not rust, some are just oxidized to patina, and what do you do if you have nothing to do in the water, it is generally no problem to put it for hundreds of years, otherwise how can the ancient bronzes be preserved.

Copper will rust if left on water for a long time.

For example, we put a small amount of copper in dry air, the copper does not rust, (there is oxygen and carbon dioxide in the air) and then take a small amount of copper and put it in a test tube with only water, and the surface of the water is sealed with oil and does not come into contact with the air. It turned out that neither was rusty.

However, if a small amount of copper is soaked in water and then taken out and placed in dry air, after a period of time, the surface of the copper will produce patina, that is, rust! Therefore, it can be concluded that the environment in which copper rusts is a combination of water, oxygen and carbon dioxide in the air.

Copper can form basic copper carbonate in the air, which is often referred to as "patina".

Yes, but it will take a longer time to rust.

Copper will rust after being put in water for a long time, and copper reacts with oxygen, carbon dioxide and water in the air to produce a green patina, which is commonly known as patina, and its main component is basic copper carbonate, and the chemical formula is Cu (OH) Co.

Basic copper carbonate is malachite green, so it is also called malachite, which is a precious mineral gemstone. When heated in air, it decomposes into copper oxide, water, and carbon dioxide. It dissolves in acid and generates the corresponding copper salt. It occurs in nature in the form of malachite.

There is no reaction when it is just put into water, but it will rust after a long time, and oxidation reaction will occur with water and oxygen, so pure copper can not be used to make utensils containing water, iron can, although iron will also oxidize, but after oxidation, it will form a protective film of oxide to prevent further oxidation. Copper is not good, it is too active, and it will even deform and leak out after a long time.

Copper washing water will not damage the copperware. According to Daoke Baba's information, copper washing water will not directly damage the bronze, but if it is used incorrectly, it will cause damage to the bronze. Copper wash water is usually a chemical-containing cleaner used to remove dirt and oxides from the surface of copperware.

These chemicals can cause corrosion or damage to the surface of copper objects, especially if the copper wash is too concentrated or used for too long.

The following points should be paid attention to when using copper washing water:

1. Do not soak the copper ware in copper washing water for a long time, it is best to wipe the surface lightly.

2. When using copper washing water, it should be used according to the instructions in the instruction book, and do not overuse or add other chemicals.

3. After using copper washing water, the copper utensils should be thoroughly rinsed with clean water and wiped dry with a dry cloth.

Summary. When the copper is old, a layer of green rust will form on the surface, which is formed by the reaction of copper with oxides in the air. The main component of this layer of patina is basic copper carbonate, which is not toxic to humans and is sometimes thought to have some benefits for humans.

However, it is not recommended if there is a lot of dust or other impurities on the surface of the copperware, as these impurities may contain harmful substances. In addition, if the surface of the copper is coated with substances such as chemicals or paint, it may also cause harm to the human body.

When the copper is old, a layer of green rust will form on the surface, which is formed by the reaction of copper with oxides in the air. The main component of this layer of green rust is basic copper carbonate, which is not toxic to humans and is sometimes thought to have some benefits for the human body. However, it is not recommended if there is a lot of dust or other impurities on the surface of the copperware, as these impurities may contain harmful substances.

In addition, if the surface of the bronze is coated with chemicals or paint, it can also cause harm to the human body.

Can you be poisoned if you drink copper old water.

Copper aged water is generally placed in vinegar, salt, lemon juice and other solutions, and the surface appears peeling and discoloration under long-term action, so as to obtain the effect of what people call "copper aging". Normally, people who drink copper-containing aged water will not be poisoned. However, if the copper aged water is made with unsafe chemicals or other methods, the surface of the copper may be left with harmful substances, which may cause poisoning after drinking.

In addition, if there is more patina on the surface of the copperware, it may also contain certain harmful substances, so it should be avoided drinking. Therefore, as long as the process of copper aging is safe and healthy, drinking copper aging water will not be poisoning, but attention should be paid to mastering the use methods and precautions.