The main uses of 1,3-diene-4-cyanonaphthalene are quite wide. In the context of "Tiangong Kaiwu", this material is often used by all workers.
First, in the dyeing and weaving industry, 1,3-diene-4-cyanonaphthalene can be used as a raw material for dyes. Ancient dyers, in order to obtain a bright and long-lasting color, often sought all kinds of natural and synthetic materials. This substance can produce brilliant colors after ingenious combination and blending. It is applied to silk and hemp, making the fabric bright and lasting, and satisfying the needs of the world for the beauty of clothing.
Second, in the field of medicine, it also has its uses. Ancient physicians studied pharmacology and explored the properties of various things. 1,3-diene-4-cyanonaphthalene has been processed and refined, and may have certain medicinal effects. Although the method at that time was different from today, its potential for conditioning the body and healing diseases has also been observed by physicians, and it may be used to relieve certain diseases and relieve pain for patients.
Third, in the manufacture of exquisite utensils, 1,3-diene-4-cyanonaphthalene may enhance the properties of materials. If the maker wants to make the utensil durable and fine in texture, adding it can change the toughness and hardness of the material, etc., making the utensil more suitable for use, whether it is a daily tool or a delicate handicraft.
In short, 1,3-diene-4-cyanonaphthalene has shown its unique uses in many aspects such as dyeing, weaving, medicine, utensil manufacturing, etc., and has made great contributions to the development of life and craftsmanship at that time.

The synthesis method of 1% 2C3-diene-4-cyanobenzene is not directly related to "Tiangong Kaiwu", but it can be deduced with reference to the wisdom of ancient chemical processes.
Ancient alchemy, metallurgy and other processes involve the transformation of substances, or can be used for reference. To synthesize this substance, the selection of raw materials is quite critical. In ancient times, although there is no fine purification method today, it can be found from natural materials. Cyanobenzene is related, or can be obtained from cyanide-containing plants through complex extraction and transformation, such as bitter almonds and other cyanoside-containing plants, through hydrolysis, oxidation and other steps, or can obtain intermediates containing cyanide groups.
And the diene part can be considered as natural substances such as oils and resins. The oil is saponified, cracked, etc., or unsaturated hydrocarbons are generated, and then double bonds are introduced through clever reactions to construct diene structures.
The reaction process in ancient times often depends on heat and time control. In this synthesis, when setting a suitable reaction environment, or in ceramic or copper vessels. Temperature control can be adjusted according to the size of the charcoal fire and the density of ventilation. The reaction time is measured by hours, and the material changes are closely observed and adjusted in a timely manner.
Separation and purification, ancient also have methods. Or use distillation to separate the target product by taking advantage of the difference in the boiling point of each substance. Or use the method of recrystallization, select a suitable solvent, and make the product crystallize and precipitate in it to achieve the purpose of purification. Although the ancient conditions were simple, with the wisdom and diligence of the ancients, with time, it may be possible to explore a feasible synthesis path, adding a touch of brilliance to the history of chemical technology.

1% 2C3-diene-4-alkynyleheptane, this is an organic compound with unique physical properties.
It is a liquid at room temperature and pressure. Due to the unsaturated carbon-carbon double and triple bonds in the molecule, the intermolecular forces are affected, and the melting boiling point has its own characteristics. Generally speaking, high levels of unsaturation will cause the intermolecular forces to weaken, and the melting boiling point is relatively low for saturated hydrocarbons with the same number of carbon atoms. For example, compared with heptane, heptane is a saturated alkane with a relatively high melting boiling point, while 1% 2C3-diene-4-alkynyleheptane has a lower melting boiling point.
The compound is less dense than water and will float on the water surface. This is related to its molecular structure and composition, and the type of atoms and the spatial arrangement determine its density characteristics.
In terms of solubility, it is insoluble in water, because it is an organic matter, and water is a polar molecule. According to the principle of "similar miscibility", it is difficult to dissolve if the polarity difference is large. However, it is easily soluble in organic solvents, such as common ether, carbon tetrachloride, etc. Organic solvents are mostly non-polar or weakly polar, and are similar in structure and polarity to 1% 2C3-diene-4-alkyleheptane, so they are miscible. In addition, 1% 2C3-diene-4-alkynyleheptane has high chemical activity due to its multiple unsaturated bonds, and can undergo various chemical reactions such as addition and polymerization under suitable conditions, which also affects its physical property stability to a certain extent. During different chemical reactions, the physical state and other properties may change accordingly.

The chemical properties of 1% 2C3-diene-4-cyanobenzene are quite stable. In this substance, the structure of carbon-carbon double bonds and cyanobenzene groups affects each other's checks and balances, making it have unique chemical stability.
Although the carbon-carbon double bond has certain activity, due to the electron-absorbing effect of the cyanyl group, the electron cloud distribution changes, so that the electron cloud density of the double bond decreases, and the activity also decreases. In this way, under common general conditions, the double bond is not easy to undergo addition reactions as easily as ordinary olefins.
As a strong electron-absorbing group, the cyanyl group is conjugated with the benzene ring to further enhance the stability of the molecule. The benzene ring itself is structurally stable, with a large π bond. After the cyano group is conjugated with it, the electron delocalization range expands and the energy of the system decreases, thereby significantly improving the chemical stability of the whole molecule.
From the perspective of reactivity, in order to make 1% 2C3-diene-4-cyanobenzene react, more severe conditions or specific catalysts are often required to assist the reaction. This stability makes the substance less prone to chemical reactions and deterioration in storage and general use environments, and can maintain its chemical structure and properties for a long time. Therefore, in general, the chemical properties of 1% 2C3-diene-4-cyanobenzene are relatively stable.

For 1% 2C3-diene-4-chloronaphthalene, in the market, the price range is difficult to determine. The level of the cover price often depends on various reasons.
First, it depends on its quality. If the quality is excellent and pure, and there are few impurities, the price will be high; if the quality is poor and many defects, and there are many impurities, the price will be low.
Second, it is related to supply and demand. If there are many people in the market who want it, but there are few people who supply it, the price will tend to rise; if there are few people who want it, and the supply exceeds the demand, the price will be downward.
Third, the difficulty of control is also involved. If the production process is complicated, the required materials are rare, labor-intensive and time-consuming, the price will be high; if the production is easy, the materials are widely available, the labor is time-saving and the effort is small, the price will be flat.
Fourth, the profit of the business, the distance of the land, the amount of tax, etc., are also variables of the price. If the business wants a lot of profit, the price will increase; if the land is far away, the transportation cost will be expensive, and the price will also be high; if the tax is heavy, the cost will increase, and the price will rise.
To sum up, the price of 1% 2C3-diene-4-chloronaphthalene in the market is about tens of gold to hundreds of gold. However, this is only a rough estimate. To obtain a definite price, it is necessary to examine the situation of the time and city in detail, and consult the industry and businesspeople to obtain a more accurate number.