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What is the chemical structure of Sodium 4- { (E) - [4- (Phenylamino) Phenyl] Diazenyl} Benzenesulfonate?
This is a compound named "4- { (E) - [4- (phenylamino) phenyl] diazenyl} sodium benzenesulfonate". Its chemical structure is analyzed as follows:
1. ** Sodium benzenesulfonate base **: There is a sodium benzenesulfonate part in the overall structure, and the benzene ring is a six-membered carbon ring with conjugation stability. The sodium sulfonate group (-SO 🥰 Na) is connected to the benzene ring, in which the sulfur atom is connected to two oxygen atoms by a double bond, and then forms an ionic bond with another oxygen atom and a sodium atom by a single bond. This group gives the compound a certain water solubility.
2. ** Diazenyl Linking **: Linking (E) - [4- (phenylamino) phenyl] diazenyl on the benzene ring. Diazenyl (-N = N-) is a nitrogen-containing double bond structure, and there is cis-trans isomerism. Here, the E configuration means that the two larger groups are on the opposite side of the double bond.
3. ** Phenylamino phenyl moiety **: The other side of the diazenyl group is connected to 4- (phenylamino) phenyl group, and the 4th position on a phenyl ring is connected to the phenylamino group (-NH-phenyl), that is, the nitrogen atom is connected to the phenyl ring, and then connected to the other phenyl ring. This structure increases the molecular conjugation system and affects its physical and chemical properties, such as color, electron cloud distribution, etc.
In summary, the "4- { (E) - [4- (phenylamino) phenyl] diazenyl} sodium benzenesulfonate" structure contains sodium benzenesulfonate, diazenyl group and 4- (phenylamino) phenyl group. Each part interacts to determine the characteristics of the compound.
What are the main uses of Sodium 4- { (E) - [4- (Phenylamino) Phenyl] Diazenyl} Benzenesulfonate?
Sodium + 4 - { (E) - [4- (Phenylamino) Phenyl] Diazenyl} Benzenesulfonate, the Chinese name is often p (4-aniline-phenylazo) sodium benzenesulfonate, which is widely used.
First, in the dye industry, it is often used as an intermediate for synthesizing dyes. The synthesis of dyes is extremely complex, and many intermediates need to react with each other to build a specific structure, giving the dye its unique color and properties. The special structure of this compound can be introduced into dye molecules through a series of chemical reactions to help it generate bright-colored and high-fastness dyes. It is widely used in textiles, printing and dyeing industries to dye fabrics with lasting and brilliant colors.
Second, in the field of analytical chemistry, it can be used as an acid-base indicator. Because of its structure changes in different acid-base environments, resulting in color changes, with this property, analysts can keenly detect acid-base changes in solutions, accurately determine the titration endpoint, and play a key indicator role in chemical analysis experiments and industrial production quality control to ensure the accuracy and reliability of analytical results.
Third, in biochemical research, it can be used as a biological stain. Because it can be combined with specific substances in organisms and develop color, researchers can use it to mark and observe biological tissues, cells or biomacromolecules, and help to deeply explore the microstructure and physiological processes in organisms, providing important observation methods and research tools for biochemical research.
How is Sodium 4- { (E) - [4- (Phenylamino) Phenyl] Diazenyl} Benzenesulfonate produced?
To prepare sodium (4- { (E) - [4- (phenylamino) phenyl] diazenyl}) benzenesulfonate, the method is as follows:
The first raw materials need to be prepared, benzene, aniline, p-aminobenzenesulfonic acid and alkalis, etc., are all important.
Take aniline first, and react it with sodium nitrite in an acidic environment in an appropriate way to obtain diazonium salts. In this process, temperature control is very important, and low temperature is appropriate to prevent the decomposition of diazonium salts and cause the reaction to be inaccurate.
Next, dissolve the p-aminobenzenesulfonic acid in the alkali solution to form its sodium salt solution. In this step, it is necessary to pay attention to the amount of alkali, so that the p-aminobenzene sulfonic acid is completely converted into sodium salt, so as to facilitate the subsequent reaction.
Then, the diazonium salt prepared above is slowly added to the p-aminobenzene sulfonic acid sodium salt solution, and stirred at the same time. This reaction is a coupling reaction. When reacting, its phenomenon should be observed, and the color change of the solution should be observed to stop the reaction process.
And the pH, temperature and other factors of the reaction environment have a great influence on the reaction and need to be carefully regulated. After the reaction is completed, the impurities are removed by separation and purification methods, such as filtration, crystallization, washing, etc., to obtain pure sodium (4- { (E) - [4- (phenylamino) phenyl] diazenyl}) benzenesulfonate.
In this way, according to the above steps and precautions, the desired product can be prepared.
What are the physical and chemical properties of Sodium 4- { (E) - [4- (Phenylamino) Phenyl] Diazenyl} Benzenesulfonate?
Sodium + 4- { (E) - [4- (phenylamino) phenyl] diazo} benzenesulfonate, which has many physical and chemical properties. Its color state is often powdery, mostly orange yellow or similar color, which is a sign of appearance.
When it comes to solubility, it is soluble in water. It is ionic and soluble by virtue of the affinity of sulfonic acid groups with water molecules. However, in most organic solvents, such as common ethanol, ether, etc., the solubility is poor, because the molecular polarity does not match the organic solvent.
In terms of stability, in conventional environments, if there is no extreme change in temperature and humidity, it can survive relatively stably. However, in case of high temperature, or over 200 ° C, the diazonium group in the molecule is uneasy, or causes decomposition, and releases nitrogen, etc., with changes in color and odor. In case of strong oxidants, the diazonium group and benzene ring may be oxidized, and the structure is broken.
In terms of acidity and alkalinity, because of its benzene sulfonate, it is weakly acidic. Hydrolysis in water causes the pH of the solution to drop slightly and is slightly acidic.
Spectral characteristics are also considerable. In the ultraviolet-visible spectrum, the absorption peaks of benzene ring and diazonium group conjugated system are mostly in the range of 250-450 nanometers, which can be qualitatively and quantitatively analyzed. In the infrared spectrum, the stretching vibration of carbon-hydrogen bond and carbon-carbon bond of benzene ring, as well as the characteristic vibration of sulfonic acid group and diazo group, all have corresponding absorption peaks, which help to confirm the structure.
Sodium 4- { (E) - [4- (Phenylamino) Phenyl] Diazenyl} Benzenesulfonate What are the precautions during use?
Sodium + 4 - { (E) - [4- (Phenylamino) Phenyl]} Diazenyl Benzenesulfonate is a chemical substance. When using, many precautions must be kept in mind.
First, this substance may have specific chemical activity and reactivity. When using it, be sure to carefully observe its chemical properties, such as reaction to acid and alkali, tendency to redox, etc. If mixed with unsuitable chemicals, it may cause violent reactions and cause dangerous reactions, such as explosions and fires. Therefore, before using it, be familiar with its chemical properties and avoid incompatible substances.
Second, it is related to safety protection. This substance may be harmful to the human body. If it is exposed to the skin, inhaled or taken by mistake, it can damage health. Therefore, when operating, appropriate protective equipment must be worn, such as gloves, goggles, gas masks, etc., to prevent contact and inhalation. If you accidentally come into contact, you should follow the corresponding first aid procedures. For example, rinse the contact area with a lot of water, and seek medical treatment if necessary.
In addition, storage is also critical. It should be placed in a dry, cool and well-ventilated place, away from fire sources, heat sources and oxidants. Improper storage conditions, or material deterioration, affect its performance, and even cause safety accidents.
Repeat, during use, the cleanliness and adaptation of the experimental equipment should not be ignored. Unclean utensils or impurities may affect the reaction results; unsuitable utensils may not meet the experimental needs, resulting in experimental failure or danger.
In short, when using Sodium + 4- { (E) - [4- (Phenylamino) Phenyl]} Diazenyl Benzenesulfonate, we must be cautious and strictly abide by safety regulations and operating procedures to achieve safe and effective purposes.