5-chloro-4-nitrothiophene-2-sulfonyl chloride

Mercury, commonly known as mercury, is the only metal that exists in a liquid state at room temperature and pressure. It has many unique physical properties.
Looking at its color, mercury is silver-white and bright, just like the moon condensing in one place, shining brightly. Its liquid form is extremely special, and its fluidity is very good, just like smart water, but it is heavier than water.
When it comes to density, mercury has a high density, about thirteen times that of water. This property makes mercury in water immediately sink to the bottom, like a heavy stone falling into an abyss.
Furthermore, the boiling point of mercury is relatively low, about 356.73 ° C. With a little heat, mercury will quickly turn into a gaseous state and disperse in the air.
Its freezing point is -38.83 ° C. In cold environments, mercury will condense into a solid state, but its solid state is also different from the solid texture of common metals, making it more fragile and fragile.
The surface tension of mercury is quite large, and when it drops on a plane, it will form a nearly perfect spherical shape, just like round silver beads, rolling with each other without fusing.
Mercury also has good electrical conductivity and is used in many electrical devices.
However, mercury is also toxic, and its vapors and compounds can cause serious damage to the human body. Therefore, when using and handling mercury, extreme caution should not be taken lightly.

Mercury is strong and toxic in nature, but it has its uses in ancient medical and alchemy.
In terms of medical medicine, mercury compounds such as light powder and medicine promotion have the effect of attacking poison and killing insects and reducing sores. Ancient physicians often used mercury-containing agents externally in case of scabies, syphilis, and sores. Light powder can erode sores and remove rot, help new muscle growth; improve medicine to extract pus and poison, and promote wound healing. However, mercury poison is very strong, and it should be taken internally with caution. If it is not used properly, it will be a disaster.
As far as alchemy is concerned, mercury is an essential medicine for alchemy. The ancients believed that mercury, after being refined many times, can be combined with other things, and can become a miraculous elixir. If you take it, you can prolong your life, and even become an immortal. For example, Wei Boyang's "Book of Changes" and Ge Hong's "Baopuzi Inner Part" all contain the method of alchemy, and mercury is often the key thing. However, most of the alchemy drugs contain mercury poison, and instead of taking it, you will not achieve longevity, but will be poisoned, and even die. The emperors of the Tang Dynasty, many of them died after taking the pill poisoning.
In addition, there are traces of mercury in the ancient craftsmanship. For example, in the art of gilting gold, mercury and gold are made into gold amalgam, which is applied to the surface of the utensil, heated to evaporate the mercury, and gold is attached to the utensil to increase its beauty and prevent corrosion In ancient times, mirrors were made, or mercury amalgam was plated with silver to make the mirror surface smooth and shiny.
However, the harm of mercury poisoning cannot be ignored. Although ancient times used it, they gradually realized its poison. Today, science is prosperous, and the deeper the understanding of the toxicity of mercury, it must be used in accordance with strict regulations to prevent the poison from spreading and endangering life.

The method of making sea water, tetralopyrrole, and dichlorohydride is very complex, let me explain it.
The method of making sea water, in ancient times, there was a second way to boil it. In this way, if the sea is flat, dig up the fields. When the sea tide rises, seawater is introduced into the fields. It is exposed to the scorching sun, and the seawater is steamed, and the amount of water is lost. When it is collected at the bottom of the field, the sea is obtained. This is the law of nature. It requires natural land, and it has been a long time. The method of boiling is to put seawater in the container of the kettle and boil it with fire. The seawater boils, and the water is steamed, and it is retained in the kettle. This method is fast, but the fuel is more.
Until the synthesis of tetrapyrrole, pyrrole is often used as a raw material. First, the catalytic effect of the catalyst is used to make the pyrrole reverse. Under a specific degree and force, the addition of the pyrrole to the pyrrole is achieved, and the tetrapyrrole is obtained. This reaction requires precise control of the reaction, whether it is prone to side reactions, and the cause is not low. There is also a method of multi-step anti-synthesis of nitrogenous compounds such as alkenes. First, the nitrogenous compound is generated by nucleus addition and the like, and then the original step is completed, or tetrapyrrole.
The method of synthesizing dichlorohydantoin is commonly used. Hydantoin is placed in a reaction kettle and chlorine is introduced. In the presence of a certain degree of resistance and catalysis, chlorine replaces hydantoin atoms at specific locations in hydantoin molecules to form dichlorohydantoin. In the reverse process, it is necessary to closely measure the amount of chlorine and the reverse degree to ensure the benefit of the reaction and the degree of the reaction. There are also other compounds containing chlorine that replace chlorine and synthesize dichlorohydantoin by different reverse routes, but it needs to be weighed according to factors such as the availability of raw materials and cost.

Mercury is highly toxic. When storing and transporting it, be careful to keep it safe.
Mercury is volatile and its vapor is highly toxic. Therefore, when storing mercury, the first weight should be sealed. It must be stored in a special container and tightly sealed to prevent mercury gas from escaping. As mentioned in "Tiangong Kaiwu", all kinds of utensils should be guaranteed to be seamless and leak-free, solid and reliable. And the place where mercury is stored should be cool and dry, protected from heat and light. Due to heat, the volatilization of mercury will increase, and light may also promote chemical reactions, which will damage its quality and increase danger.
When handling mercury, handle it with care. Mercury is soft and flowing. If the collision and vibration are too severe, it is easy to cause the container to be damaged and the mercury liquid to flow out. Once it flows out, it is extremely difficult to collect it completely, and the mercury that is scattered in various places continues to evaporate, which is very harmful.
If there is an accidental leakage of mercury during storage or transportation, do not panic. Quickly evacuate personnel from the scene, open windows for ventilation, and reduce the concentration of mercury vapor. When collecting mercury, it can be covered with sulfur powder. Mercury and sulfur can be synthesized into mercury sulfide, which is greatly reduced in toxicity and easy to clean up.
Furthermore, those involved in mercury storage and transportation must be familiar with its characteristics and hazards, and know emergency measures. When operating, use protective equipment, such as masks, gloves, protective clothing, etc., to prevent mercury from coming into contact with the human body and invading the body through skin or breathing.
The storage and transportation of mercury is related to human life and the environment. It must not be taken lightly. It must follow rigorous laws and scientific methods to ensure that everything goes smoothly and is harmless.

Alas! In this context, nitrogen, amines, and other substances are the shadow of human health in the environment, which is a matter of concern to the world.
First of all, the most important element is also the color and odor. In the environment, if it escapes in the atmosphere, it is easy to rise to high altitudes because of its resistance. However, its own chemical activity, if it is large in the environment, in case of open fire or high temperature, it will explode, endangering the surrounding environment and life. In addition, it relies more on fossil fuels, which releases carbon dioxide and other gases, adding to global warming.
As for nitrogen, its proportion in the environment is very high. However, the amount of nitrogen compounds, such as nitrogen oxides, is produced by the combustion process. These substances can cause acid rain, fall on the ground, and cause growth in soil, vegetation, and water. They also cause the formation of photochemical emissions, causing air pollution, human respiratory system.
Amine, especially amino cyanide, this compound. If it enters the environment, it can pollute the soil and water. In the soil, it may affect the microbial life and plant life. If it is exposed to human skin, respiration, or food, it can cause poisoning, damage organs such as liver, and is also suspected of carcinogenesis.
If it is damaged, it may still be involved in fossil fuels, and carbon capture technology is required. If the technology is not perfect, there will still be carbon emissions. Its production process or the use of chemical substances may also leak and pollute the environment. In the long term, if a large amount of energy is used, its impact on the environment will not be ignored, and people's health may also be unknown.
Of course, this situation and the impact of people's health need to be carefully considered, and we must take the method of science and make good use of it to avoid its harm.