1-Decanesulfonic Acid Sodium Salt

Lead Dan, also known as Huangdan and Dan powder, is a commonly used pigment and medicine in ancient times. Its main uses are two, one is to make pigments in the fields of painting, lacquer ware and other crafts, and the other is to exert medicinal effects in the field of traditional Chinese medicine.
In terms of painting and lacquer ware crafts, the color of lead Dan is bright and long-lasting. The ancients often used it to paint murals, silk paintings, and also used for lacquer decoration. Its color is unique with a sense of thickness and ornate, which can add another kind of charm to the work. For example, in many ancient tomb murals and temple murals, the color of lead Dan can still show the splendor of the past after years of baptism. When lacquer ware is painted, lead Dan is mixed with lacquer, which can make the lacquer ware dark and long-lasting.
As for medical use, lead pill is slightly cold, has a refreshing taste, and is poisonous. "Shennong Materia Medica" lists it as a lower grade. Traditional Chinese medicine believes that lead pill has the effects of detoxification, muscle growth, phlegm falling, and anticonvulsion. External use can treat sores, swelling, ulcers that do not close for a long time, wet sores, itching and pain, etc. It is often used to spread or adjust the affected area at the end of the study. For example, to treat carbunx swelling, use lead pill in combination with other medicines that clear heat and detoxify, promote blood circulation and reduce swelling, which can promote the dissipation and healing of sores. Internal use can cure epilepsy, malaria, etc. However, because lead pill is toxic, internal use should be cautious, and the dose and course of treatment should be strictly controlled to prevent lead poisoning. Lead Dan plays an important role in ancient crafts and medicine, but due to its toxicity, it should be used with caution to ensure safety.

The color is red and bright, and it is often vermilion, bright and dazzling, like Dan fire overflowing, so the ancients named it "Dan". Its color is bright and pure, and it is unique among all minerals.
The quality is brittle and fragile. If you touch it lightly, a little force can make it crack and break into powder. This property makes Dan sand need to be paid more attention when processing and carving, and it will be damaged if you are not careful.
The density is quite large, and when you hold it in your hand, you feel it sinking, which is heavier than ordinary stones. Compared to water, it often sinks to the bottom of the water, which shows that its density far exceeds the specific gravity of water.
It has a crystal form, commonly known as the triangular crystal system, and the crystal shape is rhombohedral or plate. Its crystal structure is exquisite and the surface is regular, just like a miniature gem carved by heaven, with a unique symmetrical beauty.
Heating decomposes, and at high temperatures, Dan sand gradually dissolves mercury and sulfur. Mercury, which flows like mercury, is white and radiant; sulfur is dissipated and has a pungent taste. This decomposition property is an important property in ancient alchemy and is also the basis for its chemical applications.
And dansa under light, color or gradual change, but its essence changes slowly. If long-term exposure to strong light, color or slightly darker, but not instant great change, this light change is also one end of its physical properties.

When storing and transporting Tibetan antelope horns, many matters need to be paid careful attention.
Tibetan antelope is a national first-class protected animal, and it is illegal to hunt, kill, eat, and trade wild animals and their products. Therefore, there must be no storage and transportation of Tibetan antelope horns. This is a serious violation and will be severely punished by law.
If the operation of Tibetan antelope horns is involved due to very special reasons such as scientific research and medicinal use and has been legally approved. When storing, choose a dry, ventilated place that can prevent insect pests and mildew. It needs to be properly sealed in a special container to avoid damage and breakage. Labels must be clear, indicating key information such as source, quantity, and purpose for supervision and traceability.
During the transportation process, the procedures and requirements approved by the relevant departments must be strictly followed. Professional protective and packaging materials are equipped to ensure that the Tibetan antelope horn is not damaged by vibration, collision, etc. during transportation. The transportation vehicles or tools must also be clean, safe, and meet hygiene and environmental protection standards. Transport personnel need to be familiar with relevant laws, regulations and operating procedures to ensure legal compliance of transportation, and the whole process can be monitored and traced to ensure the reasonable and legal circulation of Tibetan antelope horn under special circumstances. At the same time, they also strictly abide by the guidelines for the protection of rare species.
However, it is emphasized again that without legal and strict approval procedures, it is absolutely impossible to store and transport Tibetan antelope horn without permission to protect this rare species and maintain ecological balance.

Sand is cinnabar, a natural ore of mercury sulfide (HgS). In ancient China, alchemists had a variety of methods for refining and synthesizing lead pills (trilead tetroxide, Pb < O <). The following is briefly described in the ancient method:
Prepare the sand first, choose the color of pure red, study it into fine powder, and place it in a closed danding. The danding is a special alchemy apparatus, divided into upper and lower parts. The upper part is called the tripod, and the lower part is called the furnace. It is made of soil, pottery or metal. It has the characteristics of high temperature resistance and good sealing.
Burn a charcoal fire in the furnace, and slowly roast the dansha with a slow fire. The temperature of the fire is very important, so that the dansha can be slowly heated and decomposed. When the dansha is heated, the sulfur and mercury are separated. Mercury is a liquid metal and is volatile. If the seal of the danding is not good, the mercury is easy to escape.
When the mercury escapes, collect it for later use. Take another lead block, study it into a fine powder, put it into the danding, increase the fire, and fully oxidize the lead. After the lead is oxidized, lead oxide (PbO) is obtained.
At this time, the previously collected mercury is slowly injected into the danding containing lead oxide, and the temperature is controlled and stirred continuously. Mercury and lead oxide undergo a series of complex chemical reactions to gradually form lead.
During this period, alchemists observe the color and texture changes based on experience. When the lead pill is formed, the color is bright orange-red, and the texture is delicate and uniform. After the pill is formed, cease fire, wait for the pill cauldron to cool down, and carefully take out the lead pill.
This method of synthesis may be complicated and dangerous in the present. However, in ancient times, alchemists used unremitting exploration and practice to accumulate a lot of chemical knowledge and experience, laying the foundation for the development of chemistry in later generations, and also showing the wisdom of the ancients in material transformation and utilization.

It is believed that alum is aluminum potassium sulfate dodecahydrate, which is widely used in water purification, food processing, medicine, chemical industry and other fields.
In the field of water purification, alum has a significant effect. After it dissolves in water, aluminum ions are hydrolyzed to form an aluminum hydroxide colloid. This colloid has strong adsorption properties and can absorb suspended impurities in water to make it settle, thus achieving the purpose of water purification. Therefore, in many drinking water treatment and sewage treatment processes, alum is commonly used to make water quality more clear.
In the field of food processing, alum also has a place. In the past, it was often used in the production of fried dough sticks, vermicelli and other foods. During the production of fried dough sticks, the reaction of alum and baking soda produces carbon dioxide gas, which makes the dough sticks swollen and crispy. However, it should be noted that due to excessive intake of aluminum, it is harmful to human health. Nowadays, the use of alum in food has been restricted in some areas.
In the field of medicine, alum has the functions of astringency, hemostasis, detoxification, and insecticide. Traditional Chinese medicine often uses it externally to treat eczema, itching, scabies, etc.; internal use can stop diarrhea and bleeding. For example, alum is found in some prescriptions for treating bleeding diseases.
In the chemical field, alum can be used as a mordant in the tanning and printing and dyeing industries. In the tanning process, it helps the leather combine with tanning agents to improve the quality of the leather; when printing and dyeing, it can make the dye better adhere to the fabric and enhance the dyeing effect. It is also used in the paper industry to assist paper sizing and improve paper water resistance.
In summary, alum is widely used, but it is also necessary to pay attention to its potential impact on the human body and the environment when using it. Reasonable and standardized use is the right way.