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What is the Chinese name of this compound?
What is the Chinese name of this compound? In "Tiangong Kaiwu", this thing is called "lead Dan".
Lead Dan is also known as Huangdan, Dan powder, Zhu powder, and lead flower. "Tiangong Kaiwu" contains: "To make lead Dan, use one catty of lead, ten taels of sulfur in soil, and one tael of saltpeter. Melt lead into juice, point it under vinegar, and when boiling, place a piece of sulfur; a little bit, add a little bit of nitrate, and then point vinegar when boiling, and then add sulfur and nitrate according to the previous. The lead is made through vinegar, sulfur, and nitrate, and will naturally become Dan when it is exhausted." The book elaborates on the production method of lead Dan. Lead, sulfur, and saltpeter undergo a series of reactions to obtain lead Dan.
The color of lead Dan is as red as Zhu Dan, hence the name. It is slightly cold in nature, has a refreshing taste, and is poisonous. It can be used medicinally to detoxify and produce muscles, drop phlegm and calm shock. In ancient times, it was also commonly used in alchemy, hoping for longevity. However, its toxicity should not be underestimated, and it should be used with caution.
Lead pills are used in painting pigments, glass, ceramics and other industries. In painting, the color of lead pills is bright and dazzling, which is loved by painters. However, with the passage of time, lead pills are easy to oxidize and change color, causing the color of paintings to change.
The lead pills described in "Tiangong Kaiwu" play an important role in ancient chemistry, craftsmanship and other fields. Later generations can see the wisdom and skills of the ancients from it
What are the physical properties of this compound?
This compound is a rare wonder in the world and has many unique physical properties. Its color is crystal clear, just like the morning dew that first coagulates in the morning. Under the sunlight, it shines brightly, reflecting colorful brilliance, which is beautiful and amazing.
Its quality is warm and moist, and it is as delicate and smooth as suet jade to the touch, but it is not as cold and hard as jade. It adds a bit of mildness and seems to be able to blend with human skin. The density of this object is quite amazing. It is heavier than ordinary gold and stone. It is placed in the palm of the hand and has a lot of weight. However, looking at its shape, it is not as bulky as gold and stone, but it has a light state, which is amazing.
Furthermore, the hardness of this compound is extraordinary, and the sword and sword are added, making it difficult to leave the slightest trace. It is like a strong barrier that is naturally formed, and it is not afraid of external forces. And its ductility is also good, it can be stretched and extended like a golden thread, but it does not break, and it is full of toughness.
It is particularly peculiar, this thing is extremely sensitive to temperature. In case of cold, the surface of the body is frosty, but the frost is not cold and piercing, but has a hint of coolness, which is refreshing; in case of heat, it emits a soft halo, and the color of the halo changes with the temperature, or it is as red as fire, or as blue as a pool, which changes thousands of times, which is wonderful.
And this object can absorb light energy under light, and then slowly release it, like a night pearl, emitting a soft light in the dark night, illuminating a part of the world. It is a rare treasure in the world. Its unique physical properties can be said to be a collection of the wonders of heaven and earth, and the magic of nature.
What are the chemical properties of this compound?
This compound is a wonderful creation between heaven and earth, with many unique chemical properties.
It is lively and can react quickly with a variety of substances in a specific environment, just like the smart sparrow, which instantly fuses with the surroundings. When encountering strong acids and alkalis, it is like a warrior facing a fierce enemy, showing a different response. When encountering strong acids, or like a gentle stream, it quietly blends with it, and an exquisite replacement reaction occurs. The elements are recombined and arranged to generate a new thing; when encountering strong alkalis, it is like a fire and ice collide, and the reaction is violent. Gas escapes, accompanied by the release of heat, such as a volcanic eruption, which is shocking and enthusiastic.
Furthermore, under light, this compound is like being guided by a god, and its internal structure undergoes wonderful changes. It is like a sleeping elf being awakened by sunlight, and the electrons in the molecule gain energy and jump to a higher energy level, triggering a series of photochemical reactions. The color or shape may change, and the original simple appearance becomes colorful, just like a phoenix nirvana, reborn.
Its stability is also unique. At room temperature and pressure, it is like a calm old man, quiet and stable, and can maintain its own structure and properties for a long time. However, once the external conditions change, such as a sudden rise in temperature or a huge change in pressure, its stability will be like thin ice when warm, instantly disintegrating, and begin to decompose or polymerize. When decomposing, it is like a building collapsing into many small molecular substances; when polymerizing, it is like everyone joining hands to form a more massive and complex structure, displaying wonderful chemical properties. Between these changes, the wonders of the chemical world are revealed.
What are the common application fields of this compound?
This compound is often used in the field of application, and has important uses in engineering, engineering, engineering, and daily life.
In engineering, it is often used to synthesize multi-material raw materials. For example, in plastic engineering, it can be used to create plastics with various properties. For example, those with high durability and corrosion resistance can be used in the production of building materials, mechanical parts, etc. In the field of plastics, the materials synthesized from this compound can have good adhesion and wear resistance. They are widely used on surfaces such as gold and wood to prevent damage.
In terms of engineering, some of these compounds are based on research, which can effectively prevent diseases, protect the health of crops, and improve the quality of crops. In the same way, it is also useful in the fabrication of industrial films. The films have good protection and protection properties, which is beneficial to the control of crop production environment.
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What are the methods for synthesizing this compound?
To make this compound, there are many methods, each with its own advantages and disadvantages, and it is necessary to choose according to the actual situation.
One is the thermal polymerization method. Take the relevant monomer, place it in a suitable reactor, and heat it up to a specific temperature to enable the monomer molecules to be energized and initiate a polymerization reaction. In this process, the chemical bonds between molecules are rearranged and connected, and gradually polymerize into the desired compound. Fine temperature control is required. If the temperature is too high or the reaction is too fast, the product is prone to impurities; if the temperature is too low, the reaction will be slow and take a long time. And the reaction time also needs to be accurately controlled. If it is too short, the degree of polymerization will not be reached, and if it is too long or side reactions will occur.
< b Adding a specific catalyst to the reaction system can reduce the activation energy of the reaction and accelerate the polymerization of the monomer. The activity and selectivity of this catalyst are crucial. High activity can promote the reaction efficiently, and good selectivity can guide the formation of the target product and reduce impurities. However, the cost of the catalyst may be high, and subsequent separation may be difficult. In addition, the amount of catalyst needs to be accurate. Too much or too little will affect the reaction process and product quality.
The third is solution polymerization. The monomer is dissolved in an appropriate solvent to establish a homogeneous reaction environment, and the reaction is easier to control. The solvent can stabilize the temperature of the reaction system and has an impact on the solubility of the product, which is conducive to the extension and growth of the molecular chain. However, the solvent needs to be selected carefully, and its boiling point, solubility and inertness to the reaction are all At the same time, the separation and recovery of the solvent after the reaction cannot be ignored, which is related to cost and environmental protection.
There is also an emulsion polymerization method. Water is used as a continuous phase, and an emulsifier is added to disperse the monomer into an emulsion for polymerization. This method has good heat dissipation, can avoid local overheating, and has a small particle size and high stability of the product. However, the emulsifier remains or affects the performance of the product, and the process is relatively complicated, which requires strict requirements on the type and dosage of emulsifier.