What are the main uses of 1-bromo-2-iodobenzene?

In "Tiangong Kaiwu", the main uses of borax (boron) and arsenic (arsenic) are as follows:

Borax, which is mild in nature. In the field of metallurgy, it is often used as a flux. When casting, it can reduce the melting point of metal, make the metal more easy to melt and flow, which is conducive to casting various utensils, can help remove impurities in the liquid metal, improve the purity and quality of the metal, and make the cast utensils more refined and durable. In alchemy and other alchemy activities, borax is also occasionally used. Although the ancient people did not understand its chemical properties as thoroughly as today, its unique physical and chemical properties made it play a special role in some refining processes, or assist in the formation of medicinal pills, or participate in part of the reaction regulation.

Arsenic, highly toxic. However, in the field of ancient medicine, after being strictly processed, a small amount of arsenic could be used as medicine to treat certain sores, malaria and other diseases with poison. Of course, the dosage and method of use were strictly stipulated, and the slightest carelessness would endanger life. In agriculture, the ancients knew its toxicity and would skillfully use arsenic to mix seeds to resist pest damage, reduce crop damage and protect crop growth. However, arsenic is highly toxic, and extreme caution should be taken during use to avoid serious harm to humans, animals and the environment.

What are the physical properties of 1-bromo-2-iodobenzene

Mercury is one of the metals. It is liquid at room temperature and pressure, and has unique physical properties. Its color is silver-white, with a metallic luster, like flowing silver, shining brightly. It is soft and malleable, but compared with other metals, its ductility is slightly inferior.

The density of mercury is quite high, about thirteen times that of water. This characteristic makes it sink significantly in liquids. If mercury is poured into water, it quickly sinks to the bottom of the water and aggregates into silver droplets, with a bead-like shape and round and agile.

Mercury has an extremely low melting point of -38.87 ° C, so it is liquid at room temperature, which is unique among metals. The boiling point is also not very high, about 356.6 ° C. When mercury is heated, it heats up to the boiling point and turns into mercury vapor, which rises up.

Mercury has good electrical and thermal conductivity. Although it is not as good as copper and silver and other metals, it is also suitable for metals. This property makes mercury used in some electrical and thermal devices.

Mercury is volatile and slowly converts into mercury vapor and escapes into the air at room temperature. Mercury vapor is colorless, odorless, and toxic. Inhalation can cause poisoning in the human body, damage the nervous system, kidneys and other organs, and is very harmful.

Furthermore, mercury can form an alloy with a variety of metals, which is called amalgam. Amalgam is used in metallurgy, dentistry and other fields. For example, in ancient times, precious metals such as gold and silver were extracted by amalgam method, which took advantage of the dissolution characteristics of mercury to gold and silver. After heating, the mercury volatilized and retained gold and silver.

Mercury is relatively stable in chemical properties, and it is not easy to combine with oxygen at room temperature. However, when heated, it can react with oxygen to form mercury oxide. Mercury can also chemically react with many acids, bases and salts, showing rich chemical changes.

What are the synthesis methods of 1-bromo-2-iodobenzene?

The method of mercurial fusion has been explored in ancient times. The following is explained in classical Chinese according to the "Heavenly Works".

One way to combine mercury is to put it in a crucible first, and calcined it with a fierce fire. When the molten liquid is mixed, it will be like a river, shining brightly. Here, slowly put in mercury. Mercury is like water, and the flow is shaped. Mercury enters the liquid, like water, and then it is quickly mixed to make the two blend. This mixing is difficult, and the mercury should not be divided. When it is fully mixed, it can be turned off, and when it is cold, it will be an amalgam of mercury.

Another method is to first fill the mercury in a dense container, which is resistant to high temperature and has a hole that can be opened. The container containing the mercury is placed on the charcoal, and the heat is added at low heat. The mercury is then heated, evaporated, and raised in the container. Take another crucible, set it in the container, and add it over high heat to make it melt. In this case, the mercury vapor is introduced into the crucible of the rich. The mercury vapor encounters a liquid, and condenses in it, as if it were dew and condensed. Add a moment, so that the two can be fused properly, and then it cools, and it also forms an amalgam.

Furthermore, there are those who first study the mercury powder. The powder is like a crystal, and the mercury powder is like crystal sand. Mix the two powders evenly and place them on the crucible. First, slow-bake over a warm fire to make the powders initially combine. And then, in the heat, the calcined water, in the crucible, the mercury will penetrate each other and melt into one. When the heat is enough, stop the fire and cool down, the resulting alloy, the ground, has both the characteristics of mercury.

This method is used in the ancient world of mercury, each with its own delicate properties, and has its own value in metallurgy.

What are the precautions for storing and transporting 1-bromo-2-iodobenzene?

In the process of storage and storage of mercury, it is very important to pay attention to all matters.

Mercury is a liquid gold, easy to burn, and its steaming is toxic. Before storage, it must be sealed to prevent mercury from evaporating and escaping. The containers used should be made of high-quality materials and have the characteristics of corrosion resistance. The containers of glass or gold materials should be preferably used, and the containers should be checked regularly for any signs of leakage. The place of storage should be dry, and the source of fire, heat and direct light should be used to prevent the acceleration of mercury due to the increase in temperature. The mercury should be properly packaged according to the method of reducing the risk of dangerous products. Usually in thick-walled glass bottles, wrapped in shock-proof and anti-collision materials, and placed in a fixed box, and clear warnings such as "poison" and "careful disposal" should be clearly displayed. In the process, it is necessary for the charger to be familiar with the urgent treatment of mercury leakage. In the event of a leak, it can be quickly and properly recovered.


































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Therefore, the storage and storage of mercury should be strictly observed and should not be negligent, so as not to endanger personal safety.

What are the effects of 1-bromo-2-iodobenzene on the environment and human health?

Mercury is a highly toxic substance. It has a great impact on the environment and human health.

Looking at the environment, if mercury is released in nature and enters rivers, lakes and seas, it will be a huge water hazard. Aquatic animals and plants absorb it, and mercury accumulates in their bodies but does not disperse. For example, in the genus of fish and turtles, if people eat it, mercury will enter the human body, causing endless harm. And mercury can migrate long distances in the atmosphere, causing widespread pollution, and it is difficult to escape mountains, forests and fields.

As for human health, mercury is also harmful. If people inhale mercury vapor, or eat mercury-containing food, mercury enters the internal organs and meridians. In mild cases, dizziness, fatigue, insomnia, dreaminess, forgetfulness, anxiety and other symptoms are present, which is a sign of disturbance of the nervous system. In severe cases, tremors in the limbs, unstable walking, poor speech, and even mental confusion and mental disorders. Mercury also damages the kidneys, causing abnormal kidney function, urine protein production, and even kidney failure. If pregnant women are exposed to mercury, mercury can be transmitted to the fetus through the placenta, causing fetal development deformities, intellectual insufficiency, and lifelong harm.

Furthermore, mercury is also harmful to the oral cavity and digestive system. Gums are red, swollen, bleeding, ulcerated, and bad breath; gastrointestinal dysfunction, nausea, vomiting, abdominal pain, and diarrhea are common. < Br >
It is because mercury is harmful to the environment and human health, and it must be carefully prevented to avoid it from being a disaster to the world.