2,5-PYRAZINE-DIACID

2% 2C5 -adipic acid, that is, 2,5 -dicarboxyladipic acid, its main uses are as follows:
This material is widely used in the industrial field. The first to bear the brunt is in the preparation of polyester resins. By condensation reaction with polyols, polyester resins with excellent performance can be prepared. This polyester resin is widely used in the field of coatings. With its good film formation, corrosion resistance and wear resistance, it can be used as a high-quality coating for surface coating of metals, wood and other materials to achieve protection and decoration. In terms of adhesives, due to its strong bonding force, it can be used for bonding of various materials, such as paper, leather, fabric, etc., to help different materials firmly combine.
Furthermore, it also plays an important role in the production of synthetic fibers. 2,5-Diadipic acid and dibasic amine can be polymerized to obtain polyamide fibers, which are common nylon fibers. These fibers have high strength and good wear resistance. They are widely used in the textile industry and can be made into various types of clothing, such as sportswear, outdoor equipment, etc. Their excellent properties are favored by consumers. They are also used in industrial fields, such as tire cords, ropes, etc., to provide solid material support for industrial production.
In addition, 2,5-Diadipic acid also performs well in plastic modification. Introducing it into some plastic systems can effectively improve the flexibility, processing performance and heat resistance of plastics. If an appropriate amount of 2,5-paraadipic acid derivatives is added to polyvinyl chloride (PVC) plastics, the flexibility of PVC can be improved, making it more suitable for the manufacture of soft plastic products, such as plastic films, plastic pipes, etc., expanding the application scope of plastics.
From the above, 2,5-paraadipic acid plays an indispensable role in many fields of industry and is of great significance to promoting the development of related industries.

2% 2C5 -adipic acid is an organic compound. Its physical properties are as follows:
First, looking at its shape, under room temperature and pressure, 2% 2C5 -adipic acid is in the shape of a white crystalline powder, with a fine texture, like the first snow in winter, pure and free of impurities.
Second, observe its melting point, which is about 167.5 ° C. When the temperature gradually rises to this point, the original solid state of 2% 2C5 -adipic acid, like ice and snow in the warm sun, slowly melts into a liquid state, showing the wonderful transformation of the state of matter.
Third, test its solubility, slightly soluble in water, and slightly increased in hot water. However, it can be better dissolved in organic solvents such as ethanol and ether. Just like fish get water, in a suitable solvent environment, it is evenly dispersed. This solubility characteristic is related to the polarity of the carboxyl group and the non-polarity of the hydrocarbon group in the molecular structure. The hydrophilicity of the carboxyl group and the hydrophobicity of the hydrocarbon group interact with each other to create such solubility characteristics.
Fourth, measure its density, which is about 1.360g/cm ³. This density shows that under the same volume, 2% 2C5-adipic acid is heavier than water. When placed in water, it will slowly sink, just like a stone entering water, following the law of material density.
Fifth, smell its smell, 2% 2C5-adipic acid is almost odorless, and in the air, there is no irritating smell. When using, there is no need to worry about the impact of pungent smell on the human body.
These are the physical properties of 2% 2C5 -adipic acid. In-depth understanding of it is of great significance for applications in many fields such as chemical industry and materials.

2% 2C5 - adipic acid, its chemical properties are as follows:
This substance is white crystalline and quite stable at room temperature. It is acidic and can react with bases for neutralization. It is mixed with sodium hydroxide, that is, raw sodium adipate and water. This is a typical acid-base neutralization. The reaction formula is: HOOC (CH 2) COOH + 2NaOH → NaOOC (CH 2) COONa + 2H 2 O.
2% 2C5 - adipic acid also has esterification properties. If it coexists with alcohols, under suitable catalyst and reaction conditions, it can form esters. For example, when reacted with ethanol, diethyl adipate and water can be formed. This reaction requires concentrated sulfuric acid as a catalyst and is heated to promote it. The reaction formula is: HOOC (CH ³) COOH + 2C ³ H OH $\ underset {\ triangle} {\ overset {concentrated sulfuric acid }{=\!=\!=}}$ C ³ H OOC (CH ³) COOC ³ H + 2H ³ O.
In addition, 2% 2C5 -adipic acid may undergo reactions such as dehydration when heated. If the conditions are appropriate, a molecule of water can be removed from the molecule to form an acid anhydride; if it is intermolecular dehydration, it can form a polyanhydride. This dehydration reaction is sensitive to factors such as reaction temperature, time and catalyst, and needs to be precisely controlled. < Br >
Due to its above chemical properties, 2% 2C5-adipic acid is widely used in the chemical industry, and can be used for the preparation of polyester, polyurethane and other materials. It is also an important raw material for the synthesis of various fine chemicals.

2% 2C5-glutaric acid is commonly used in chemical industry, and there are various methods for its preparation. The following is the first step:
Oxidation method. Cyclopentane is used as the starting material, and with the help of a catalyst, it is oxidized by air or oxygen. This is a common way. The chemical reaction is roughly as follows: Cyclopentane and oxygen are first reduced to a mixture of cyclopentanol and cyclopentanone under a specific catalyst, temperature and pressure, and then further oxidized to obtain 2% 2C5-glutaric acid. In this process, the catalysts involved are quite critical, and the commonly used ones such as cobalt salts and manganese salts can promote the efficient progress of the reaction. Temperature and pressure also need to be precisely controlled. If the temperature is too low, the reaction will be slow; if the temperature is too high, side reactions will occur frequently, causing the purity of the product to be disturbed. The same is true for pressure, and the right pressure can ensure a smooth reaction.
In addition, there is also a method of using glutaraldehyde as a raw material to obtain 2% 2C5-glutaric acid through oxidation. Glutaraldehyde undergoes an oxidation reaction under the action of a suitable oxidizing agent. This oxidizing agent can choose hydrogen peroxide, etc. During the reaction, the choice of solvent and the length of the reaction time all affect the formation of the product. If a suitable solvent is selected, the reactants can be fully contacted and the reaction rate can be improved. Controlling the appropriate reaction time can not only ensure the complete reaction, but also avoid excessive reaction.
There are also those who use furfural as the starting material. Furfural is first converted into an intermediate product through a series of reactions, and then oxidized to obtain 2% 2C5-glutaric acid. This path involves many reaction steps, and the reaction conditions of each step need to be carefully controlled to ensure the smooth reaction of each step in order to obtain the target product.
There are various methods for preparing 2% 2C5-glutaric acid. In actual production, the choice should be weighed according to the availability of raw materials, cost, product purity and many other factors to make production efficient and economical.

2% 2C5 - For adipic acid, it is difficult to determine the price range in the market. This is because the price often varies with various conditions, such as supply and demand conditions, the price of raw materials, political guidance, and market competition.
In the past market conditions, the price of 2% 2C5 - adipic acid fluctuates due to the movement of supply and demand. If demand is abundant and supply is limited, the price will rise; if supply exceeds demand, the price will be depressed. And the price of raw materials is also the main reason. If the price of raw materials is high, the cost of 2% 2C5 - adipic acid will increase, and the price will also increase; if the price of raw materials falls, the cost of production will decrease, and the price may fall.
In addition, the government also affects its price. If the government encourages or restricts production, it can change the supply and demand of the city, and cause the price to change. Furthermore, the competition in the city is intense, and various merchants compete for the market, or adjust their prices.
Basically speaking, the price of 2% 2C5-adipic acid, in the current market, is in the range of tens of yuan to hundreds of yuan per kilogram, but this is only an approximation, not an exact value. The actual price depends on the market conditions at the time, the amount purchased and the various transaction conditions. If you want to know the exact price, you should check the real-time market news carefully, or consult people and merchants in the industry.