2% 2C3-diethyl-1% 2C4-naphthalonitrile (9CI) is an important raw material for organic synthesis. It has a wide range of uses in the field of fine chemicals.
In dye synthesis, 2% 2C3-diethyl-1% 2C4-naphthalonitrile (9CI) can be used as a key intermediate. Through a series of chemical reactions, it can be converted into delicate dye molecules. Due to its own structural characteristics, the dyes synthesized by it are often bright and stable, and are very useful in the textile printing and dyeing industry. They can make the fabric color bright and lasting, and will not fade after many washes.
In the field of medicinal chemistry, it also plays an important role. Many drug research and development use it as a starting material, and its structure is modified and modified by organic synthesis. With its unique chemical activity, compounds with specific pharmacological activities can be constructed, laying the foundation for the development of new drugs, which are expected to exert therapeutic effects on specific disease targets and promote the progress of medical science.
In addition, in the field of materials science, 2% 2C3-diethyl-1% 2C4-naphthalonitrile (9CI) can be used to prepare functional materials. After proper processing and polymerization, polymer materials with special optical and electrical properties can be generated, which have potential application value in optoelectronic devices such as organic Light Emitting Diodes (OLEDs), solar cells, etc., or can improve device performance and efficiency.

2% 2C3-diethyl-1% 2C4-naphthalenedimethylnitrile (9CI) is a kind of organic compound. Its physical properties are particularly important and are related to its many uses and characteristics.
First of all, its appearance is usually white to light yellow crystalline powder. This form is convenient for storage, transportation and subsequent processing applications. Its texture is fine, the particles are uniform, and it is conducive to dispersion and mixing in specific processes.
When it comes to melting point, 2% 2C3-diethyl-1% 2C4-naphthalenedimethylnitrile (9CI) has a certain melting point value. This melting point is the critical temperature at which the substance changes from solid state to liquid state, which has a great impact on its processing technology. If it needs to be modified or participated in the reaction by means of melting, it is crucial to know the melting point, which can be used to control the heating temperature and ensure that the substance is in a suitable physical state.
Solubility is also a key property. It has a certain solubility in organic solvents, such as some aromatic hydrocarbons and halogenated hydrocarbon solvents. This property allows it to participate in the reaction of many solution phases, or to prepare specific solution systems as solutes. However, in water, its solubility is minimal. This difference is due to the molecular structure and polarity of the compound, which make it more prone to interact with non-polar or weakly polar organic solvents.
Furthermore, its stability cannot be ignored. Under the condition of normal temperature and pressure without special chemical environment interference, 2% 2C3-diethyl-1% 2C4-naphthalenedimethylnitrile (9CI) can maintain a relatively stable chemical structure. However, when exposed to high temperature, strong oxidizing agent or specific catalyst, its structure may change, causing chemical reactions to occur. This stability determines the choice of storage conditions and use scenarios. Store in a cool, dry and well-ventilated place to avoid contact with substances that may initiate reactions.

2% 2C3-diethyl-1% 2C4-naphthalonitrile (9CI), the chemical properties of this compound are relatively stable. The reason is that from the analysis of its molecular structure, the compound is composed of a naphthalene ring as the core structure, and the naphthalene ring itself has high aromatic stability. Two cyano groups (-CN) are connected to the 1 and 4 positions of the naphthalene ring, and the cyano group is an electron-withdrawing group, which can form a conjugated system with the naphthalene ring to further stabilize the molecule. At the same time, the diethyl groups at the 2 and 3 positions also affect the molecular structure. The electron-inducing effect of the ethyl group makes the molecular electron cloud distribution more uniform, reducing molecular activity and enhancing stability.
Furthermore, from the perspective of reactivity, such compounds need to overcome high energy barriers if they want to react. For example, in nucleophilic substitution reactions, cyanocarbon is connected to nitrogen atoms by triple bonds, and the electron cloud density is low, making it difficult for nucleophiles to attack; and the delocalized system formed by the naphthalene ring π electron cloud also poses a certain obstacle to the attack of foreign reagents. In redox reactions, its stable conjugate structure makes electron transfer less likely, requiring specific strong oxidizing agents or reducing agents, and the reaction is possible under harsh conditions.
In summary, 2% 2C3-diethyl-1% 2C4-naphthalonitrile (9CI) exhibits good chemical stability due to its unique molecular structure, and is not prone to chemical reactions under normal conditions.

The synthesis method of 2% 2C3-diethyl-1% 2C4-naphthalic anhydride (9CI) is not directly described in Tiangong Kaiwu, but it can be deduced according to the methods of ancient chemical industry and similar synthesis ideas.
Ancient chemical industry relied heavily on natural materials and simple equipment, and was carried out by fire refining, water quenching, grinding, and impregnation. To make this product, you can first take natural materials containing naphthalene, such as the components of naphthalene in coal tar, and purify them by distillation and fractionation. In ancient times, distillation was made by retort, burning a fire, vaporizing the material, and condensing it into a liquid to obtain relatively pure naphthalene.
After obtaining naphthalene, if you want to introduce ethyl and carboxyl to form anhydride, you can use the ideas of halogenation, alkylation, and oxidation. Although there are no fine organic reagents in ancient times, natural ones can be used instead. For example, halogenation reactions, or brine (containing halides), can be used to interact with naphthalene at appropriate temperatures, light or catalysts. Ancient catalysts, or some ore powders, plant ash, etc., although their effectiveness is not as good as today's special catalysts, they can also initiate reactions.
Alkylation steps, or can use halogenated ethane (try to make your own) to react with naphthalene in an alkaline environment and at appropriate temperatures, so that ethyl is attached to the naphthalene ring. Alkaline environments can be created by using plant lime water, lime water, etc.
As for oxidation to carboxylic groups and dehydration to anhydride, or the use of oxygen in the air, at high temperature and with catalysts (such as metal oxides, ancient or iron red, etc.), naphthalene derivatives are first oxidized to carboxylic acids, and then heated to dehydrate to anhydride.
Although the synthesis of this compound is not detailed in "Tiangong Kaiwu", the ancient chemical wisdom and basic operation can be the cornerstone of exploring its synthesis path. According to natural materials and simple means, the principle of organic reaction can be followed, or the method of its synthesis can be obtained.

In today's world, business conditions are changeable, and prices in the city are difficult to remain constant. However, as far as I know, the price of 2,3-diethyl-1,4-naphthalenedione (9CI) in the market varies depending on the quality, source, and supply and demand.
If the quality is excellent, the source is authentic, and there are many people in the market, but there are few people in supply, the price will be very high. Or ranging from hundreds of gold to thousands of gold per unit. However, if the quality is normal, and the sources are mixed, and the supply in the market exceeds the demand, the price should be more affordable, or only a few tens of gold per unit.
Looking at the business conditions in the past, the price of such chemical things often varies with the world. When business is prosperous and manufacturing needs more, the price will be raised; if the luck is not good, and the need for manufacturing is less, the price will be depressed. And the market conditions vary from place to place, and the price will also vary. In Dayi, the capital of Tongdu, due to the convergence of merchants, the logistics is convenient, or the price may be excellent; while in remote places, due to the difficulty of transshipment, the price may be high.
To be sure, the price of 2,3-diethyl-1,4-naphthalenedione (9CI) fluctuates between tens of gold and thousands of gold per unit. However, if you want to know the exact number, you need to carefully observe the current market conditions and consult the industry.