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Mercury is fierce and intense in nature, and it is essential to the path of alchemy. Although the "Tiangong Kaiwu" does not elaborate on the specific medicinal uses of mercury, the main uses of mercury in various ancient books are about two ends.
One is involved in alchemy. Since ancient times, alchemists and warlocks have all heavy mercury characteristics. Mercury has the property of sublimation, which can transform gas and rise, and can be condensed and returned. In the cauldron furnace, it is combined with various medicines, and after the change of heat, it can become a magic pill. The Gai ancients believed that taking this pill can prolong life, or even ascend to immortality. For example, Ge Hong's "Baopuzi Interior" describes the method of alchemy, and mercury is often the key thing. In the form of lead and mercury, or supplemented with other medicines, through the power of nine revolutions, I want to refine the elixir of longevity.
The second is related to medicine. Ancient physicians also used mercury to treat diseases. Mercury can kill insects, and can treat scabies and evil sores. Its nature is fierce, and it can fight poison with poison. Such as light powder, it is a preparation of mercury, which can be used externally on the skin to remove poison and reduce sores. However, mercury has great poison, and if used carelessly, it will be very harmful. If taken internally in excess, it can cause damage to the viscera, qi and blood inversion, and all kinds of serious diseases. Therefore, physicians must be cautious when using drugs, carefully observe the condition, and consider the dose before they dare to use it.
Mercury probably had its uses in ancient alchemy and medicine. However, its toxicity is obvious, and users cannot ignore it. The pursuit of longevity in alchemy is mostly false; the use of medicine should also be prudent, and it must not be carried out by Meng Lang, which will cause disaster.

The anode mud is the sediment produced by the anode when electrolysis refines metals. The substances contained in it have unique physical properties.
The color of the anode mud is often mottled. The cover is mixed with various metals and their compounds because of the various elements it contains, so that its color is not a single solid color. It may have a gray color, interspersed with a little metallic luster, which is the highlight of the precious metal particles.
Its texture is quite delicate. Many fine particles gather with each other, but it does not feel rough to the touch. This is because during the electrolysis process, the precipitation and deposition of substances are gradually carried out at the microscopic level, so the anode mud particles formed are fine and uniform.
The density of anode mud is relatively large. Because it contains many heavy metal elements, such as gold, silver, platinum and other precious metals, as well as other metals such as lead and bismuth. The atomic weight of such metals is large, resulting in the overall density of anode mud higher than that of common soil, sand and gravel. When you weigh it in your hand, you can feel its heavy quality.
Its conductivity also has characteristics. Although it is not as good as pure metal, it contains some conductive metal components, so it has a certain conductivity compared with ordinary insulators. This characteristic is also related to the distribution and interconnection of metal particles inside it.
Furthermore, the melting point of anode mud has no fixed single value due to its complex composition. The different metals and compounds contained in it have their own melting points. After mixing with each other, the melting point range is wider. And during the heating process, some low-melting substances may melt first, and then with the increase of temperature, other components gradually change. The physical properties of
anode mud are determined by its complex composition, and these properties are of great significance in refining precious metals and studying electrolysis processes.

The chemical properties of methyl ether are quite unique. The molecular formula of methyl ether is\ (C_ {2} H_ {6} O\), and the structural formula is\ (CH_ {3} OCH_ {3}\). Under normal temperature and pressure, it is a colorless and flammable gas, and has the special smell of ethers.
In terms of its chemical properties, the first one is its relative stability. The carbon-oxygen-carbon bond structure of methyl ether is relatively stable. Under normal conditions, it is not easy to react under the action of common reagents such as water, dilute acid, and dilute base. This stability is due to the combination of oxygen atoms and two methyl groups in its molecular structure, which makes the molecular system reach a relatively stable state.
However, methyl ether is not completely inert. Under certain conditions, methyl ether can exhibit active chemical activity. For example, in an environment with high temperature and the presence of a catalyst, methyl ether can undergo cracking reactions. The\ (C-O\) bond of methyl ether can be broken to form products such as methanol, carbon monoxide, hydrogen, etc. The principle of this reaction is that the synergistic action of high temperature and catalyst breaks the original relatively stable chemical bond in the methyl ether molecule, causing it to undergo chemical bond rearrangement and cracking.
Furthermore, methyl ether is outstanding in combustion reactions. Because it is rich in carbon and hydrogen, and the ratio of carbon to hydrogen is suitable, methyl ether is easily burned in the air, generating carbon dioxide and water, and releasing a large amount of heat energy. The intensity of this combustion reaction makes it a potential clean energy. The chemical equation of combustion is:\ (2CH_ {3} OCH_ {3} + 3O_ {2}\ stackrel {ignited }{=\!=\!=} {2} + 3H_ {2} O\).
In addition, methyl ether can participate in some substitution reactions. Under specific reaction conditions and reagents, the methyl group in the methyl ether molecule can be replaced by other atoms or atomic groups. The occurrence of this substitution reaction depends on many factors such as the temperature and pressure of the reaction system, the type of reagents used, and the characteristics of the catalyst. The chemical properties of
methyl ether are both stable and active under specific conditions, which makes it have broad application prospects and research value in many aspects such as chemical production and energy field.

Mercury is a highly toxic substance, and dansa is an important source of mercury. If you want to get mercury, you must have a method.
The ancient method of mercury refining often begins with dansa. According to "Tiangong Kaiwu", the color of dansa is red, and the nature is pure yang. The dansa is placed in a closed kettle and roasted under a charcoal fire. When the dansa is heated, it decomposes mercury, which turns into steam, and condenses on the wall of the kettle when cold. The text says: "Whenever mercury is raised to vermilion again, it is called silver vermilion (that is, mercury sulfide). The method uses one catty of newly raised mercury, fourteen taels of sulphur, grinds the sulphur into a powder, spreads it inside, heats it up, turns it into a piece, and takes it out for re-research. For every catty of mercury, you get fourteen taels of Zhu, and three taels This is the method of refining silver vermilion, in which mercury is also formed.
There are also those who use cinnabar to smelt mercury. Cinnabar is another name for Dansha. Dig the cinnabar, wash away impurities, and put it in a special furnace tripod. The furnace tripod has two upper and lower vessels, the lower chamber is a chamber for holding sand, and there are condensation devices on it. Calcined cinnabar with fierce fire, the mercury escapes from the sand, rises to the upper vessel, and gradually gathers into drops. As the book says: "Where cinnabar, mercury, and silver vermilion are originally the same thing, so those with different names are divided into coarse and old and tender." Cinnabar has been calcined and can be turned into mercury, which is an ancient method.
There is also an earth method for smelting mercury, which is in a simple kiln, piled up with Ignite the charcoal, and under high temperature, the sand decomposes. Mercury vapor rises with the hot gas and is collected by a condensation device, and mercury can also be obtained. However, although these local methods can obtain mercury, the process is simple, mercury evaporates and dissipates a lot, and it is harmful to the environment and the person who refines it.
The method of mercury refining by the ancients, although it has its wisdom, is limited to the technology of the time, and it is very harmful to the environment and health. Today's mercury refining technology is new, and it has been replaced by environmentally friendly and efficient methods. However, the ancient techniques are also known to our generation as the source of chemistry, which cannot be ignored.

Mercury is a highly toxic substance, and many matters need to be treated with caution during storage and transportation.
When storing, choose the first heavy container. It is advisable to use thick and airtight metal containers, such as iron or copper cans, because it is not easy to chemically react with mercury, which can effectively prevent its leakage and volatilization. Do not use fragile glass containers to prevent accidental damage and leakage of mercury. Containers must be tightly sealed, because mercury is volatile, even small gaps may allow it to escape and pollute the surrounding environment.
Furthermore, the storage place should be cool, dry and well ventilated. Mercury evaporates more vigorously in high temperature environments, so it should be protected from direct sunlight and heat sources. Humid places can easily cause containers to rust, which in turn affects the storage of mercury. Good ventilation can reduce indoor mercury vapor concentration and reduce the risk of poisoning.
When transporting mercury, safety protection must be comprehensive. Before transportation, mercury must be properly sealed in special containers, and shock-proof and anti-collision measures must be taken. Transportation vehicles should also be equipped with necessary emergency equipment and protective equipment to prepare for emergencies. Transportation personnel need to be professionally trained to be familiar with the characteristics of mercury and emergency treatment methods.
Transportation route planning is also critical. Densed areas and environmentally sensitive areas should be avoided to reduce the harm to the public and the environment in the event of accidental leakage. During transportation, closely monitor the status of mercury, regularly check whether the container is in good condition, and deal with any abnormalities immediately.
In short, the storage and transportation of mercury should not be sloppy at all. Every step is related to the safety of personnel and the environment. It must be operated in strict accordance with regulations and must not be slack.