What is the chemical structure of Disodium 5-Acetylamino-4-Hydroxy-3- (Phenylazo) Naphthalene-2,7-Disulphonate?
I look at what you said about "Disodium + 5 - Acetylamino - 4 - Hydroxy - 3 - (Phenylazo) Naphthalene - 2,7 - Disulphonate", which is the English name of an organic compound. To understand its chemical structure, it is necessary to analyze the meaning of its name.
"Disodium" indicates that this compound contains disodium atoms, and the cap exists in the form of ions. "5 - Acetylamino", which shows that there is an acetamide group at the 5th position of the naphthalene ring, which is a group formed by the connection of acetyl and amino groups. "4 - Hydroxy", which means that there are hydroxyl groups at the 4th position, hydroxyl groups, and groups connected to hydroxyl atoms. " 3 - (Phenylazo) ", which means that the 3-position is connected with a benzene azo group. This is the structure in which the benzene ring is connected to the azo group. The azo group is two nitrogen atoms connected by a double bond." Naphthalene - 2,7 - Disulphonate ", both the 2nd and 7th positions of the epitaphthalene ring have sulfonic acid groups. The sulfonic acid groups have the structural characteristics of sulfonic acids and exist in the form of salts (salts with sodium).
Overall, its chemical structure should be based on the naphthalene ring as the core structure. The 2nd and 7th positions of the naphthalene ring are connected with sulfonate anions and form salts with sodium; the 3rd position is connected with benzenazo group, and the benzene ring in this benzenazo group is connected with azo group; the 4th position is connected with hydroxyl group, and the 5th position is connected with acetamide group. In this way, the chemical structure of this compound can be roughly understood.
What are the main uses of Disodium 5-Acetylamino-4-Hydroxy-3- (Phenylazo) Naphthalene-2,7-Disulphonate?
Disodium + 5-acetylamino-4-hydroxy-3 - (phenylazo) naphthalene-2,7-disulfonate, this is the name of the chemical substance, which is often called Acid Red 337 in the world. Its uses are quite extensive, and each has its own subtlety, as detailed below:
- ** Dye Use **: This substance shines brightly in the textile industry as a dye. In the process of fiber dyeing, with its unique chemical structure and properties, it can be tightly combined with various fibers, such as wool, silk, nylon, etc. The dyed fabrics are bright and moving, just like spring flowers, and have excellent light resistance and washable fastness. In the printing and dyeing process, it can use the printing process to outline exquisite patterns on the surface of fabrics, just like skillfully painted scrolls, which are widely used in clothing, home textiles and other fields to add brilliant colors to people's lives.
- ** Biological dyeing **: In the field of biomedicine, it also has unique contributions. In the laboratory, it can act as a biological stain for dyeing cells and tissues. Through a specific dyeing process, different structures of cells can be presented in sharp contrast, as if lighting up the microscopic world, helping researchers to clearly understand the shape, structure and distribution of cells under the microscope, providing key basis for biological research, medical diagnosis and other aspects, as if opening an important door to explore the mysteries of life.
- ** Other Applications **: In some special fields, it can also play a unique role. For example, in some analysis and detection processes, it can be used as an indicator, using its sensitive color change characteristics to keenly indicate the progress or end point of a specific chemical reaction, like a "signal light" for chemical reactions, providing clear guidelines for experimental operations to ensure the accuracy and reliability of the experiment.
What are the physical properties of Disodium 5-Acetylamino-4-Hydroxy-3- (Phenylazo) Naphthalene-2,7-Disulphonate?
5-Acetamido-4-hydroxy-3- (phenylazo) naphthalene-2,7-disulfonate is one of the organic compounds. Its physical properties, allow me to tell you one by one.
Looking at its appearance, it is often in the form of powder, color or bright state. Because of the phenylazo structure, the azo group often gives the compound a bright color. As for solubility, it is mostly soluble in water because its molecules contain a disulfonate group, which is hydrophilic and can interact with water molecules to form a stable solution.
When it comes to melting point, due to the complex molecular structure and the diverse interactions between atoms, its melting point is quite high. There are many chemical bonds and functional groups in the molecule, such as acetamide, hydroxyl, azo and sulfonate groups. These groups are maintained by covalent bonds, hydrogen bonds and van der Waals forces, and require high energy to destroy their lattice structure and melt them.
Its density also varies depending on the molecular composition and packing method. Molecules contain relatively large structural units such as naphthalene rings, and sulfonate groups increase the mass and space occupation of the molecule, so the density is relatively large.
In addition, this substance may have certain stability, but under specific conditions, such as strong acid, strong base or high temperature environment, its structure may change. Due to the sensitivity of functional groups such as acetamide, hydroxyl and azo groups to acid and base and temperature, reactions such as hydrolysis and azo group fracture can occur, resulting in changes in their physical properties.
In short, the physical properties of disodium 5-acetamido-4-hydroxy-3 - (phenylazo) naphthalene-2,7-disulfonate are determined by their unique molecular structure, and under different conditions, they will exhibit diverse characteristics.
What are the preparation methods of Disodium 5-Acetylamino-4-Hydroxy-3- (Phenylazo) Naphthalene-2,7-Disulphonate?
The method of preparing disodium 5-acetamido-4-hydroxy-3- (phenylazo) naphthalene-2,7-disulfonate has also been explored in the past. The first method is to take naphthalene as the starting material, and through sulfonation, the naphthalene is obtained with the help of a suitable temperature and sulfonating agent. Then, the naphthalene sulfonic acid derivative is nitrified, and the nitro group is precisely introduced. Subsequently, the nitro group is returned to the amino group with an appropriate reducing agent, which is the key activity check point of the subsequent reaction.
Furthermore, the amino-containing naphthalene derivative interacts with the acetyl anhydride to make the amino acetylation to obtain the acetamide-containing naphthalene compound. The aniline is diazotized by the diazotization reagent to obtain the diazo salt. The coupling reaction between the diazo salt and the acetamide-containing naphthalene compound is carried out, and the azo structure is ingeniously constructed. So far, the key 3- (phenylazo) -5-acetamidonaphthalene derivative is completed.
In the next step, the derivative is sulfonated again, and the sulfonate group is introduced at a specific position precisely to obtain disodium 5-acetamido-4-hydroxy-3- (phenylazo) naphthalene-2,7-disulfonate. During operation, various reaction conditions, such as temperature, reagent dosage, reaction time, etc., need to be carefully regulated to obtain high-purity products.
Another method, or starting with naphthol, can also achieve the purpose of preparation through a similar series of reactions such as sulfonation and coupling. During this time, the monitoring of the reaction process and the purification of intermediates are all indispensable links in the preparation of good methods, which are related to the quality of the products.
Disodium 5-Acetylamino-4-Hydroxy-3- (Phenylazo) Naphthalene-2,7-Disulphonate What are the precautions during use?
This is a disodium 5-acetamido-4-hydroxy-3- (phenylazo) naphthalene-2,7-disulfonate. During use, there are many precautions to be paid attention to.
One of them is related to its chemical properties. This substance contains an azo structure, or has certain chemical activity and instability. When used, it should be prevented from contacting with strong oxidants, strong acids and bases, etc., because it may cause violent chemical reactions, resulting in dangerous conditions, such as fire, explosion, etc. And its structure contains sulfonate groups, or has corrosive effects on some metal materials. When choosing storage containers and using equipment, avoid metal materials that are easily corroded.
Second, pay attention to safety protection. When using, be sure to take appropriate protective measures. When operating, wear protective clothing, protective gloves and goggles to avoid direct contact between the substance and the skin and eyes, because it may irritate the skin and eyes, causing discomfort and even damage. If inadvertently exposed, rinse with plenty of water immediately and seek medical attention as appropriate. At the same time, the operation should be carried out in a well-ventilated environment. Because the substance may evaporate harmful gases under certain conditions, good ventilation can reduce the concentration of harmful substances in the air and protect the health of the operator.
Third, about storage conditions. Store in a dry, cool and ventilated place, away from fire and heat sources. Humid environment may cause it to absorb moisture and deteriorate, high temperature may accelerate its decomposition, affecting the performance of use. When storing, it should also be placed separately from other chemicals, especially contraindicated substances, to prevent accidental reactions.
Fourth, the use of specifications. Before use, the operator should fully understand its characteristics, uses and safety precautions, and strictly follow the operating procedures. The amount of usage also needs to be accurately controlled to avoid excessive use of resources or cause other problems. After use, properly dispose of the remaining substances and waste, do not dump them at will, and dispose of them in accordance with relevant environmental regulations to prevent environmental pollution.
