thiophene-3-carbonitrile

What are the main uses of lead erbium-3-methyl ether? "Tiangong Kaiwu" has a cloud: methyl ether has a wide range of uses.
First, in the field of medicine, methyl ether can be used as a raw material for drug synthesis. Looking at the ancient medical processing, the formation of many formulas requires fine chemicals to assist. Methyl ether can be cleverly combined with other substances due to its specific chemical properties, making it an indispensable material for pharmaceuticals. The drugs it participates in the synthesis may cure diseases and add a powerful tool for doctors to cure diseases and save people.
Second, in the field of daily chemistry, methyl ether also has its uses. Although there are no complicated daily chemicals like today in ancient times, it can be used as a solvent in simple ointments and lotions. It can evenly disperse fragrances, pharmaceutical ingredients, etc., and improve product quality. And methyl ether is volatile, which can quickly emit aroma and increase the fragrance of daily use.
Third, methyl ether also has potential in fuel. Ancient fuels were mostly firewood, coal, etc. However, if methyl ether is properly prepared and utilized, it can also be an energy source. Its combustion is relatively clean, which can reduce smoke and odor. Although the technology at that time was not perfect and could not be applied on a large scale, its potential has begun to emerge.
Fourth, in chemical synthesis, methyl ether can be used as a basic raw material to prepare other compounds. In the initial stage of fine chemicals, methyl ether can be chemically reacted to derive many new substances, laying the foundation for the development of the chemical industry. This is of great significance in the evolution of technology and the abundance of products.

The armor of lead alloy, its physical rationality is special. The color of armor is white and slightly blue-gray, and its light is soft, not as dazzling as gold, but it has a deep and elegant appearance.
Its surface is soft, and it can be left with an object. However, this softness is not fragile, and it has a certain degree of softness. It can withstand a certain degree of folding without cracking. Under external force, it can produce a certain plastic shape.
The melting of armor is low, and it is easy to melt. Usually at a low degree of phase, it can be melted into a liquid. This characteristic makes it especially convenient in manufacturing. Craftsmen can easily melt it and inject it into various molds to create various molds.
Its density is also special, and it is neither expensive nor heavy for a certain period of time. This density characteristic makes the nail product in hand or use, which can give people a proper sense of weight, so that it will not be lost due to the weight, nor will it cause inconvenience due to the weight.
In addition, the quality of the nail is good. If it is used by hand, it can quickly perceive the weight. Under the action of the source, the nail can quickly reduce the amount of weight, which makes it useful in some high-efficiency combinations. And its performance is not as outstanding as that of good quality, but it can also be used in applications where the quality of the foot is not high. In other words, physical rationality makes it useful in many different fields of work.

Lead and mercury are the beauty of hardware, the finest of heaven and earth. Among them, the nature of lead is particularly unique.
Lead is black and heavy, its shape is like a canine tooth, and it is like the meandering of an earthworm. Its nature is heavy and downward, with the ability to converge, and it contains the quality of warmth. Among the five elements, lead belongs to water, and those of water are moisturized, so lead also has the property of downward sedimentation.
The chemical properties of lead are quite wonderful. It can fuse with many metals, such as gold and silver, and can be combined with it. When lead combines with other things, it can often change its own form and properties.
When exposed to fire, lead is easily melted into a liquid, like the flow of mercury, shining brightly. However, its melting point is not as low as that of mercury, and it needs to be calcined in a hot fire before it can melt. When the fire is extinguished and cooled, the lead returns to its solid state, hard and shiny.
Lead can also react with acids. When exposed to strong acids, the surface of lead will gradually erode, as if clouds and mists wrap around it, creating bubbles. This is the reason why lead reacts with acids and releases gas.
As for lead and alkali substances, although the reaction is not very violent, it can still interact with each other, causing the surface of lead to change, or to form a film, or to appear slightly corroded.
The path of lead and mercury is mysterious and profound. The chemical properties of lead play a crucial role in alchemy and the change of gold and stone. Those who need to understand in detail and clearly observe the principle of its change can achieve success in the process of gold and stone refining.

"Tiangong Kaiwu" is a scientific and technological masterpiece written by Song Yingxing in the Ming Dynasty, and it is recorded in detail in many processes and technologies. Regarding the synthesis method of mercury agent-3-methylmercury, the book may be as follows:
Mercury, sexual flow, always exists in Dan sand. To obtain methylmercury, first prepare Dan sand and use it as a base. For Dan sand, the color of Zhu Chi is the raw ore of mercury. Take the Dan sand and crush it and place it in a special pottery kettle. The kettle needs to be firm to prevent deflation.
Under the kettle, burn a charcoal fire, and the fire needs to be even and slow. When the charcoal fire starts, the flame is soft and warm, so that the Dan sand is gradually exposed to its heat. With the temperature rising, the mercury in the Dan sand gradually precipitates. This phenomenon of mercury analysis shows that there are silver droplets congealing on the wall of the kettle, which is mercury.
However, to form methylmercury, only mercury is not enough. It is still necessary to find an auxiliary medicine. This medicine may be lead powder. Lead powder is dry and can be combined with mercury. When the mercury is obtained, mix it with an appropriate amount of lead powder. When mixing, be careful. Stir it slowly with bamboo chopsticks or a wooden pestle to make the two even.
After stirring, re-enter the mixture into the kettle. The kettle is covered with a cover, leaving small holes in it to ventilate the flue gas. Re-ignite the charcoal fire, this time the fire is slightly fierce. Under the force of fire, mercury interacts with lead powder. After time, observe its changes. The color of the things in the kettle turns slightly yellow, and the texture is slightly hard, and the first appearance of methylmercury is also.
Take the kettle and remove it from the fire, and wait for it to be slightly cold. At this time, open the kettle to get methylmercury. The properties of methylmercury are slightly more stable than mercury, but it needs to be stored properly. Hold it in a porcelain bottle, seal its mouth, and place it in a cool and dry place to prevent it from interacting with other things.
This is only based on the process thinking of "Tiangong Kaiwu". The method of methylmercury synthesis is inferred. In fact, there are many differences in ancient alchemy, or there are more subtle methods that are not fully known.

Although there is no direct record of "the price range of dogwood-3-methyl ether in the market" in "Tiangong Kaiwu", it can be inferred from the products and market-related concepts involved in the book.
The book details the production, use and circulation of many products. At that time, the price of the products was determined by factors such as origin, season, supply and demand. Dogwood, in ancient times, or used for medicinal purposes, seasoning, warding off evil spirits, etc., has its value in the market. If this "dogwood-3-methyl ether" is refined from dogwood, it should also follow a similar price law.
The quality of dogwood may be different depending on the origin, and the extracted "dogwood-3-methyl ether" is also different. If the yield of dogwood in a certain place is abundant and of high quality, the cost of "dogwood-3-methyl ether" on that property may be slightly lower, but if it is transported to a distant place, coupled with road loss and transportation costs, the price will increase.
The season also has an impact. If the season of picking dogwood is appropriate, and the quantity and quality are good, the cost of refining "dogwood-3-methyl ether" can be controlled, and the market price may be relatively stable; if in a disaster year, the yield of dogwood is small, and the output of "dogwood-3-methyl ether" is also small, the supply is in short supply, and the price will rise.
From the perspective of supply and demand, if the medicinal demand for "dogwood-3-methyl ether" increases greatly, and the refining method remains unchanged, the output will not rise sharply, and the price will be high; on the contrary, if the demand is small, and the previous stockpile is large, the price may drop.
However, because there is no exact literature corresponding to the price of "dogwood-3-methyl ether", it is difficult to give an accurate price range. However, it can be inferred that in ancient markets, the price will fluctuate within a certain range due to the above factors such as origin, season, supply and demand, or vary greatly with different regions, years, and market conditions.