1% 2C3-bis (4-allylbenzyl) benzene, although this compound is not directly recorded in Tiangong Kaizi, it can be used according to the general principles of ancient and modern chemical applications and related process evolution.
In ancient chemical processes, organic compounds are mostly involved in material preparation, dyeing, medicine and other fields. From the perspective of the structure of this substance, its allyl and benzyl structures endow unique chemical activities.
In terms of material preparation, allyl has high reactivity and can participate in many polymerization reactions. Although ancient craftsmen did not know the modern polymerization mechanism, they crosslinked and polymerized allyl-containing compounds in practice or under natural conditions to improve material strength and durability. For example, in the ancient lacquer process, substances with similar active structures were added to the paint solution to promote its film-forming curing, making the lacquer strong and shiny. 1% 2C3-bis (4-allylbenzyl) benzene allyl may be used to improve natural resin materials to make their performance better.
In the field of dyeing, benzyl structure may affect the affinity of compounds to fabrics. In ancient dyeing, natural dyes were mostly used, but in order to increase dyeing fastness and color uniformity, additives were often required. The benzyl group of this compound may help it combine with fabric fibers, and allyl may participate in chemical reactions to fix dyes to fibers to achieve better dyeing effect.
In the field of medicine, although the molecular pharmacology of benzene ring and allyl structure was not accurately analyzed in ancient times, compounds containing benzene ring and allyl structure often have certain biological activities. The ancients used it in the processing of herbs, the refining of medicinal pills, or indirectly and containing similar structural substances. The structure of 1% 2C3-bis (4-allylbenzyl) benzene may make it have antibacterial, anti-inflammatory and other potential activities, and may have auxiliary effects in medical practice.
In summary, although "Tiangong Kaizhi" does not contain 1% 2C3-bis (4-allylbenzyl) benzene in detail, according to the ancient chemical process ideas, it may have potential application value in materials, dyeing, medicine, etc.

1% 2C3-bis (4-ethoxybenzyl) benzene, this is an organic compound. Its physical properties are quite characteristic, let me tell you one by one.
Looking at its appearance, under room temperature and pressure, it is mostly in the state of white to light yellow crystalline powder, with a fine texture, like fine snow falling at the beginning of winter. Its melting point is in a specific range, about [specific melting point value], and it slowly melts into a liquid state when heated, just like ice and snow melt when exposed to warm sun. This melting point characteristic is crucial for the identification and purification of this substance and can be used as a key indicator.
As for solubility, 1% 2C3-bis (4-ethoxybenzyl) benzene behaves differently in organic solvents. In common organic solvents, such as ethanol and chloroform, it has a certain solubility, just like fish getting water, which can be evenly dispersed to form a clear solution. However, in water, its solubility is extremely poor, just like the incompatibility of oil and water, almost insoluble. This difference in solubility can be well utilized in the separation, extraction and other operations of substances.
Its density is also one of the important physical properties. After accurate measurement, the density of this substance is about [specific density value], which determines its sinking and floating characteristics in a specific environment. When mixed with other substances, it affects the stratification and distribution of the system.
In addition, the boiling point of 1% 2C3-bis (4-ethoxybenzyl) benzene is also fixed, about [specific boiling point value]. When the temperature rises to the boiling point, the substance will change from liquid to gaseous state. This property plays a key role in the separation process such as distillation, allowing the substance to be separated from other substances with different boiling points.
The physical properties of 1% 2C3-bis (4-ethoxybenzyl) benzene have important application value in many fields such as organic synthesis and materials science, providing indispensable basic information for related research and production.

1% 2C3-bis (4-ethoxybenzyl) benzyl, the chemical properties of this compound are quite stable. Its stability is due to many structural and chemical bond properties.
From the perspective of molecular structure, the compound contains multiple benzene ring structures. The benzene ring has a highly conjugated system, which can distribute the electron cloud evenly throughout the benzene ring, thereby reducing the overall energy of the molecule and enhancing the stability. Multiple benzene rings are connected to each other, further expanding the conjugation range, which can significantly improve the molecular stability.
Furthermore, the ethoxy group in the molecule has a certain electronegativity of oxygen atoms. When connected to the benzene ring, the electron cloud density of the benzene ring can be affected by induction and conjugation effects. This electronic effect can make the electron cloud distribution on the benzene ring more reasonable and enhance the stability of the molecular structure. The steric hindrance effect of ethoxy groups cannot be ignored. It can prevent other molecules or groups from approaching and reacting to the benzene ring to a certain extent, thereby protecting the molecular structure and enhancing its chemical stability.
In addition, the chemical bond energy between the atoms in the molecule also has an important impact on its stability. Such as carbon-carbon bonds, carbon-oxygen bonds, etc., all have high bond energies and require a large amount of energy to break them. Under normal chemical reaction conditions, these chemical bonds are not easy to break, thus ensuring the relative stability of the chemical properties of the compound.
Combining the above structural and chemical bonding factors, 1% 2C3-bis (4-ethoxybenzyl) benzyl exhibits relatively stable chemical properties under common chemical environments and reaction conditions.

The synthesis method of 1% 2C3-bis (4-ethoxybenzoyl) benzene has been known for a long time. There are three methods, each with its own advantages, which are described as follows:
First, benzene and 4-ethoxybenzoyl chloride are used as raw materials and prepared by Fu-gram acylation reaction. This reaction requires Lewis acid such as anhydrous aluminum trichloride as a catalyst. Under low temperature environment, 4-ethoxybenzoyl chloride is slowly dropped into the mixture containing benzene and catalyst. After the reaction, the product can be obtained through hydrolysis, extraction, distillation and other steps. The advantage is that the raw materials are common and the operation is relatively simple; however, the disadvantages are also obvious, the reaction conditions are harsh, the catalyst dosage is large and it is difficult to recover, which is not friendly to the environment.
Second, 4-ethoxybenzoic acid and benzene are used as raw materials and synthesized through dehydration and condensation reaction. This process requires strong protonic acids such as concentrated sulfuric acid or polyphosphoric acid as dehydrating agents, heating azeotropic, so that the two condensate. After the reaction, it is purified by neutralization, washing with water, recrystallization and other steps. The advantage of this method is that the raw materials are easy to purchase and the cost is slightly lower; but the strong protonic acid has strong corrosion, high equipment requirements, and many side reactions, resulting in limited yield
Third, using 4-ethoxybenzonitrile and benzene as raw materials, 4-ethoxybenzoic acid is first hydrolyzed to obtain 4-ethoxybenzoic acid, and then condensed with benzene. The hydrolysis stage requires strong acid or strong base catalysis, and then the condensation step is similar to the dehydration and condensation of the above two methods. Although this path is slightly complicated, the raw material stability is high, the transportation and storage are convenient, and the intermediate product is easy to separate and purify, which can improve the purity of the product to a certain extent, but the overall process is long and time-consuming.
The above methods have their own advantages and disadvantages. To synthesize this compound, consider the cost of raw materials, equipment conditions, product purity and yield and other factors according to actual needs, and choose it carefully.

1% 2C3-bis (4-ethoxybenzyl) benzene, the price of this product in the market is difficult to determine. The price of this product often varies due to many factors, such as the price of raw materials, the complexity of the process, the amount of market demand and the difference in production from the place of origin.
When it comes to the price of raw materials, the acquisition cost of ethoxybenzyl-related raw materials fluctuates with market supply and demand. When raw materials are scarce, their prices will rise, causing the manufacturing cost of 1% 2C3-bis (4-ethoxybenzyl) benzene to rise, and the market price will also rise accordingly.
The complexity and simplicity of the process is also the key. If the preparation of this compound requires a multi-step complex reaction, and the reaction conditions are strict, such as precise temperature and pressure control, and high-purity reagents, the production cost will be high, which will push up the price.
The amount of market demand also affects its price. If the market demand for this product increases sharply at some time, such as for the research and development and production of specific high-end materials, the demand far exceeds the supply, and the price will rise; on the contrary, if the demand is low, the price will not be stable.
The output of the origin also has an impact. Different origins have different output and costs due to differences in resource endowments and technical levels. When the origin is concentrated and the output is large, the market competition is fierce, and the price may stabilize or even decline; if the origin is scattered and the output is limited, the price may be relatively high.
Overall, in order to know the exact market price of 1% 2C3-bis (4-ethoxybenzyl) benzene, it is necessary to gain real-time insight into the raw material market, production process, and market supply and demand in order to make a more accurate judgment.