What is the chemical structure of 3-Hydroxy-4- (1-Hydroxy-2-Naphthylazo) -1-Naphthalenesulfonic Acid, Sodium Salt?
The sodium salt of 3-hydroxy-4- (1-hydroxy-2-naphthyl azo) -1-naphthalenesulfonic acid, whose chemical structure consists of naphthalene ring, hydroxy group, sulfonic acid group and azo group.
There are two naphthalene ring structures in this compound, one of which is connected to the hydroxyl group at 1 position, and the second position is connected to the fourth position of the other naphthalene ring through the azo group (-N = N-). There is a hydroxyl group at the 3rd position of the naphthalenesulfonic acid connected to the azo group, and the hydrogen on the sulfonic acid group is replaced by sodium to form a sodium salt. The naphthalene ring, as a fused aromatic hydrocarbon structure, provides the basic skeleton and conjugate system for the whole molecule, which affects its physical and chemical properties such as stability, electron cloud distribution, etc. Hydroxy group (-OH) has certain hydrophilicity and reactivity, and can participate in hydrogen bond formation and some chemical reactions, such as esterification, oxidation, etc. Azo group (-N = N-), as a chromophore, often gives the compound a color, which is widely used in dyes and other fields. Its double bond structure also has certain chemical activity. The sulfonic acid group (-SO 🥰 H) enhances the solubility of the compound in water after forming a sodium salt. The structure of -SO 🥰 Na 🥰 helps the substance to disperse and dissolve in polar solvents, which is beneficial to its role in aqueous systems in industrial production and practical applications.
What are the physical properties of 3-Hydroxy-4- (1-Hydroxy-2-Naphthylazo) -1-Naphthalenesulfonic Acid, Sodium Salt?
The sodium salt of 3-hydroxy-4- (1-hydroxy-2-naphthyl azo) -1-naphthalenesulfonic acid, its physical properties are as follows:
This sodium salt is usually in powder form, and the color is mostly bright, or yellow or orange, depending on the preparation process and purity. In terms of solubility, it is soluble in water, which makes it well dispersed in aqueous solution systems, making it easy to participate in reactions or function in various aqueous environments.
From the melting point point point of view, due to the existence of many interactions in the molecular structure, such as hydrogen bonds, dipole-dipole interactions, etc., its melting point is relatively high. These intermolecular forces stabilize the lattice structure and require high energy to destroy it, thus making it thermally stable.
Its density is similar to that of general organic sodium salts. Due to the fact that the molecule contains multiple aromatic rings and sulfonic acid groups, the relative molecular weight is relatively large, making it higher in unit volume.
This sodium salt is quite stable at room temperature and pressure. The naphthalene ring and azo group in the molecular structure give it a certain conjugate system, which enhances the stability. However, if the ambient temperature is too high, the light is too strong, or it is in extreme conditions such as strong acid and alkali, its structure may be damaged, causing color changes or chemical properties to change. Furthermore, it has a certain surface activity, because the sulfonic acid group is hydrophilic, while the naphthalene ring is partially hydrophobic. This amphiphilic structure allows it to change the surface properties at the interface and can be used for specific surface treatments or as an additive to certain systems.
What is the use of 3-Hydroxy-4- (1-Hydroxy-2-Naphthylazo) -1-Naphthalenesulfonic Acid, Sodium Salt?
The sodium salt of 3-hydroxy-4- (1-hydroxy-2-naphthyl-azo) -1-naphthalenesulfonic acid, which has a wide range of uses. In the field of dyeing and weaving, it is often used as a dye. Looking at the dyeing and weaving arts of the past, dyes and even important things can add various colors to fabrics. Due to its unique chemical structure, this sodium salt can interact with fabric fibers to make dyeing firm and bright.
It is also used in the leather manufacturing industry. When leather is dyed, this sodium salt can give leather a rich color, and at the same time give leather certain light and water resistance properties, improving leather quality and aesthetics.
Furthermore, in the field of analytical chemistry, this sodium salt may be used as an analytical reagent. Ancient analytical chemistry often relied on various reagents to identify and determine the composition of substances. Its azo structure and sulfonic acid groups may react with specific metal ions, etc., which can help analyze the composition and content of substances through phenomena such as color changes.
In biochemical research, because of its structural characteristics, it may be used to mark biomolecules. Although the ancients were not involved in such microscopic biochemical research, today this sodium salt is used as a tool to track the behavior and distribution of biomolecules, helping researchers to understand the complex biochemical processes in organisms.
What are the preparation methods of 3-Hydroxy-4- (1-Hydroxy-2-Naphthylazo) -1-Naphthalenesulfonic Acid, Sodium Salt?
The preparation method of the sodium salt of 3-hydroxy-4- (1-hydroxy-2-naphthyl-azo) -1-naphthalenesulfonic acid is as follows:
First take an appropriate amount of 1-hydroxy-2-naphthalamine, dissolve it in an appropriate amount of dilute acid, stir well, and prepare a solution. Then, under the condition of low temperature and continuous stirring, slowly add sodium nitrite solution dropwise for diazotization reaction. This process requires strict control of the reaction temperature to prevent side reactions from occurring and causing the product to be impure.
Wait for the end of the diazotization reaction to obtain a diazonium salt solution. Next, the sodium salt of 3-hydroxy-1-naphthalenesulfonic acid is dissolved in an appropriate amount of water to prepare another solution. Under gentle stirring and specific pH conditions, the above diazonium salt solution is slowly dropped into the sodium salt solution of 3-hydroxy-1-naphthalenesulfonic acid for coupling reaction. During the coupling reaction, pay close attention to the color change of the solution, and monitor the reaction process to ensure that the reaction is fully carried out.
After the reaction is completed, add an appropriate amount of table salt to the reaction system to promote the product to be salted out. After the product is fully analyzed, the precipitation is separated by filtration means. Subsequently, the precipitation is washed with an appropriate amount of cold water to remove impurities. Finally, the washed product can be dried to obtain the sodium salt of 3-hydroxy-4- (1-hydroxy-2-naphthyl azo) -1-naphthalenesulfonic acid. During the whole preparation process, precise control of reaction conditions, such as temperature, pH value, ratio of reactants and reaction time, etc., can ensure that the product has high purity and good quality.
3-Hydroxy-4- (1-Hydroxy-2-Naphthylazo) -1-Naphthalenesulfonic Acid, Sodium Salt What are the precautions in storage and transportation?
The sodium salt of 3-hydroxy-4- (1-hydroxy-2-naphthyl-azo) -1-naphthalenesulfonic acid, which is a chemical substance. When storing and transporting, many matters need to be paid attention to.
First, the need for storage. Must find a cool, dry and well-ventilated place. Because of the moisture, it is easy to cause moisture, which in turn affects its chemical properties and purity; if the temperature is too high, it may also cause chemical reactions and damage its quality. And it should be kept away from fires and heat sources. Because the substance may have certain flammability, it may be dangerous to encounter open flames, hot topics or.
Second, the weight of packaging. Be sure to ensure that the packaging is complete and sealed. The intact packaging can block the intrusion of outside air, moisture and impurities, and ensure its quality is stable. If the packaging is damaged, not only the substance is easily contaminated, but also it may cause harm to the surrounding environment.
Third, be careful in transportation. During transportation, it needs to be handled lightly, and it must not be loaded and unloaded brutally. Because it may be fragile, if it is subject to severe collision, vibration, or the packaging is broken, the substance leaks. At the same time, it should be stored and transported separately from oxidants, acids, alkalis, etc., to prevent chemical reactions.
Fourth, clearly marked. Where it is stored and transported, clear signs should be posted, indicating the name of the substance, characteristics, hazards and emergency treatment methods and other information. In this way, in the event of an accident, relevant personnel can quickly know the situation and take correct measures.
In short, the storage and transportation of sodium salts of 3-hydroxy-4- (1-hydroxy-2-naphthyl azo) -1-naphthalenesulfonic acid should be treated with caution and follow relevant regulations and requirements to ensure personnel safety and material quality.