Mercury disulfide, or mercury sulfide (HgS), has a wide range of main uses. In ancient times, alchemists attached great importance to it. In traditional alchemy, mercury sulfide is often regarded as an important raw material. Because mercury has magical properties in the ancient understanding, and sulfur combines with it to form mercury sulfide, alchemists believe that through a specific refining process, they may be able to obtain miraculous medicinal pills, such as the pursuit of immortality. "Tiangong Kaiwu" mentions that "where cinnabar, mercury, and silver vermilion are originally the same thing, so those with different names are divided into coarse, old and tender." Among them, cinnabar is the main mineral form of mercury sulfide. Mercury can be extracted by refining cinnabar, and silver vermilion is obtained by refining mercury and sulfur.
In the field of medicine, mercury sulfide has also played a role. In traditional Chinese medicine, cinnabar is occasionally used as a medicine. It has the effects of calming the mind, calming the nerves and detoxifying. It can be used to treat palpitations, insomnia, dreaminess, mania, children's convulsions, vision dizziness, mouth sores, laryngeal paralysis, sores, swelling and toxicity. However, because mercury is a heavy metal with certain toxicity, the pros and cons should be carefully weighed when using it today.
In addition, mercury sulfide is also used in pigments. Its color is bright, especially the pigments made of cinnabar. The red color is pure and long-lasting. It is often used as a red pigment in ancient painting, lacquer ware, ceramics and other decorative processes. Like many ancient paintings, it can still retain a bright red color after years, or due to the use of mercury sulfide In ceramic production, mercury sulfide is used as a coloring agent to produce brilliant red porcelain.

Mercury disulfide (HgS) is also known as cinnabar in ancient times. Its physical properties are unique, and can be seen in detail in the discussion of minerals in "Tiangong Kaiwu".
The color of cinnabar is dazzling red, distinct and heavy. This color was highly prized in ancient times and was often used by royalty and nobles. It is used to dye fabrics and paint danqing. Its texture is delicate and smooth to the touch, but its shape is often lumpy or powdery. The lumpy ones are solid and the texture is delicate, which seems to contain natural charm; the powder ones are delicate and uniform, like dust and smoke.
The density of cinnabar is quite large, which is heavier than ordinary things. When you hold it, you can feel its heavy quality. This is due to the large atomic weight of mercury, which causes the overall density of mercury sulfide to be high. Furthermore, the hardness of cinnabar is relatively low, and it is scratched with hard objects, which is easy to leave traces, not as strong as gold and stone.
Cinnabar has a high melting point and needs to be calcined with fire to melt. Under high temperature, its structure gradually changes, and mercury and sulfur elements may escape separately. Although it is difficult to melt, it can react with various chemical agents in a specific chemical environment and show different chemical properties.
Cinnabar has good stability under light, and its color and structure are not easy to change suddenly. Therefore, it can be retained for a long time, and the color does not decrease. It is the preferred material for ancient pigments. In calligraphy, painting, lacquer ware and other processes, it still retains its brilliance after years of baptism.

Dimercaptopropanol is a good antidote. Its chemical properties are unique and worthy of in-depth study.
This substance has strong reducing properties due to the fact that its molecules contain dimercapto groups. The mercapto group has high activity and is easy to combine with a variety of metal ions. In case of heavy metals such as mercury, arsenic, and lead, the mercapto group of dimercaptopropanol can be closely linked to it, thus forming a stable complex. After the formation of this complex, its properties change greatly, its toxicity decreases sharply, and it is easier to excrete from the body with urine, so it can effectively relieve the toxicity of heavy metals.
Furthermore, the chemical stability of dimercaptopropanol also has its characteristics. Under certain conditions, its structure can be relatively stable, but when it encounters strong acids, strong bases or strong oxidants, it is easy to react. When encountering strong acids, sulfhydryl groups or protons change their chemical activity; when encountering strong bases, there may be rearrangements of molecular structures; when encountering strong oxidants, sulfhydryl groups are easily oxidized, or form disulfide bonds and other structures, which affect their detoxification efficacy.
In addition, the solubility of dimercaptopropanol is also an important chemical property. It has a certain solubility in water and most organic solvents, which makes it well distributed and transported in the body, which is conducive to detoxification. Soluble in water, easy to make water for injection, can quickly enter the blood circulation and go to the toxic site; also soluble in some organic solvents, providing convenience in preparation and drug development.
In summary, dimercaptopropanol has its unique chemical properties due to its strong reduction of sulfhydryl groups, chemical stability and suitable solubility under specific conditions, and plays a key role in the field of detoxification.

First, the essence of the method can be observed, so as to make a good tool.
First, the quality of the material is the most important. It is necessary to obtain the good material of the goblin, such as the quality of hardware, and its properties are suitable for extension before it can be built. If the material is not good, there is a good method, and it can also be made into a good product.
Second, the method of smelting. The fixed material is placed in the middle, and it is smelted with a high degree of heat. The fire is fierce and the material is easy to melt, and the fire is weak and uniform. According to the characteristics of the material, it is necessary to control the heat, make it melt, remove it, and improve its essence.
Third, the technology of forming. Waiting for the material to be molten into a liquid, put it into the mold. The shape of the mold needs to be made of two or one male, and the fine mold should be made. The injection of the mold should also be uniform, so that there is no leakage.
Fourth, the work of repair. When the mold is cold formed, it should be repaired with tools such as grinding and grinding. Make the tip of the mold sharp and sharp, the handle smooth and smooth and hand; the shape of the male is raw and clear. Seek that each mold is fine and microscopic, without flaws.
Fifth, the method of quenching. The utensils that have been repaired should be quenched with a specific solution to increase their hardness and durability. The process of quenching, the immersion of the utensils in the solution, and the ratio of the solution all need to be studied according to the ancient method, and it should not be easy to use.
The sixth, the best. When it is completed, the utensils still need to be properly used. Avoid the place where it is damp, so as to prevent it from being rotten; and do not make it subject to strong shocks, so as to prevent it from being damaged. In this way, the two-year-old utensils can be preserved without losing their beauty.

It is important to pay attention to the things that need to be hidden.
It is the first place to hide. It is necessary to create a dry place to prevent it from being damp and generated. If it is placed in a dirty place, it is easy to be invaded, resulting in the damage of the product, and the value of the product will also drop. And it needs to be a source of ignition, made of a lot of gold, which is not flammable, and the height may also cause its shape to change its original mold.
Furthermore, the container of the hidden should not be ignored. It is appropriate to use wooden cases, bags or special collection boxes. Wooden boxes need to be well-placed and well-crafted; bags should be selected and not easily broken. The special collection box can better isolate the air and air, and ensure the quality of the product.
When it is too late, first seek solidification. It should be properly wrapped, and it can be put away. It should be separated by soft things, such as cloth and cotton, to prevent collision and friction.
And on the way, pay close attention to the weather. In case of heavy rain and tidal weather, add moisture-proof measures; if it is cool, it is necessary to avoid high-temperature baking.

People should also be careful. Do not move the product roughly to prevent it from being scattered. The handover of the product will be cleaned and checked, and the quality of the product will be guaranteed. In addition, the two-year-old and one-year-old collections are all about their complete value, which cannot be ignored.