Sodium 4-[[4-[2-Methyl-4-(P-Tolylsulfonyloxy)Phenyl]Azophenyl]Amino]-3-Nitro-Benzenesulfonate

The name of this chemical substance is in the style of the ancient prose of "Tiangong Kaiwu", and can be interpreted as: sodium-4- [4 - [2 - methyl-4- (p-toluenesulfonyloxy) phenyl] azophenyl] amino] -3 - nitro-benzene sulfonate.
Today's detailed analysis, "sodium" is the first, which is the indication that the compound contains sodium. " 4 - [[4 - [2 - methyl - 4 - (p-toluenesulfonyloxy) phenyl] azophenyl] amino] - 3 - nitro - benzene sulfonate ", this long chain structure is the main part." 4 - "and" 3 - "refer to the location of specific substituents on the benzene ring." [4 - [2 - methyl - 4 - (p-toluenesulfonyloxy) phenyl] azophenyl] amino] ", containing an azo structure, and the phenyl group is connected with a methyl group and a p-toluenesulfonyloxy group. The structure of this part is complex, and the mutual connection affects the properties of the compound." 3-Nitro-benzenesulfonate ", indicating that the benzene ring has a nitro group at position 3, and the whole is in the form of benzenesulfonate. So named, it is described in detail according to the chemical structure characteristics, so that scholars can know its approximate structure by name, which is very important for chemical research and communication.

Sodium-4- [[4- [2-methyl-4- (p-toluenesulfonyloxy) phenyl] azophenyl] amino] -3-nitro-benzenesulfonate has a wide range of uses. In the printing and dyeing industry, it can be used as a dye. With its unique chemical structure, it can closely combine with fabric fibers, making the fabric show a brilliant and long-lasting color. After dyeing, various natural fiber fabrics such as cotton, linen, and silk have a full and bright color and high color fastness.
In the field of scientific research, this compound is also of important value. Because its azo structure is sensitive to external stimuli such as light and heat, it is often used in the study of photoresponsive materials. By manipulating external conditions, such as light intensity and temperature, researchers can promote structural changes in the material, and then achieve precise regulation of some properties of the material, such as optical properties and electrical properties, paving the way for the development of new smart materials.
In analytical chemistry, it can be used as a special analytical reagent. Using its characteristic reactions with specific substances, it can perform qualitative and quantitative analysis of certain ions or compounds, helping researchers to accurately determine the composition and content of substances. It plays an indispensable role in quality testing, environmental monitoring and many other aspects.

To prepare sodium - 4 - [[4 - [2 - methyl - 4 - (p-toluenesulfonyloxy) phenyl] azophenyl] amino] - 3 - nitrobenzene sulfonate, the method is as follows:
First prepare the required materials, such as aryl compounds containing specific structures, p-toluenesulfonyl chloride, sodium nitrite, sodium m-nitrobenzene sulfonate, etc., and ensure that its purity and quality meet the reaction requirements.
First take the aryl compounds containing specific structures and dissolve them into suitable organic solvents, such as dichloromethane, N, N - dimethylformamide, etc., to create a reaction environment. The reaction of p-toluenesulfonyl chloride is slowly added in an ice bath or low temperature state, and an appropriate amount of organic base, such as triethylamine, is used to catalyze the reaction between the two. This step aims to introduce p-toluenesulfonyl oxide at a specific position of the aromatic compound. During this period, the reaction process needs to be closely monitored by thin layer chromatography (TLC). When the raw material point almost disappears, the reaction is completed. The product is purified by extraction, washing, drying, column chromatography, etc.
Then, the obtained product containing p-toluenesulfonyl oxide is taken, and then dissolved into an aqueous solution or an alcohol solution containing hydrochloric acid, cooled to a low temperature, usually 0-5 ° C. Slowly add sodium nitrite dropwise to cause a diazotization reaction to occur and form a diazonium salt. This process must strictly control the temperature and feeding rate to prevent the decomposition of diazonium salts.
After the diazonium salt is prepared, sodium m-nitrobenzene sulfonate is dissolved in an appropriate amount of water or an alcohol-water mixed solvent, heated to a certain temperature, usually 40-60 ℃, and then the diazonium salt solution is slowly added to it for coupling reaction. During the reaction, the pH value of the system has a great influence on the reaction, and an acid-base regulator needs to be used to maintain a suitable pH range. After the reaction, the product is cooled, filtered, and washed to obtain a crude product.
The crude product is purified by recrystallization method. According to the solubility characteristics of the product in different solvents, a mixed solvent such as ethanol-water, ethyl acetate-petroleum ether is selected, the crude product is dissolved by heating, filtered while hot, the filtrate is cooled and crystallized, filtered again, and dried to obtain pure sodium-4- [4- [2-methyl-4- (p-toluenesulfonyloxy) phenyl] azophenyl] amino] -3-nitrobenzene sulfonate. The whole synthesis process requires fine control of the reaction conditions and attention to safety protection to achieve the ideal synthesis effect.

This is an organic compound called "4 - [4 - [2 - methyl - 4 - (p-toluenesulfonyloxy) phenyl] azophenyl] amino] - 3 - sodium nitrobenzene sulfonate". Its physical and chemical properties are quite important and have applications in many fields.
First, the appearance is usually solid, or powdered, the color is slightly different due to impurities and other factors, generally light yellow to brown. The solubility of this compound shows a certain solubility in water and some polar organic solvents. Water is a common solvent, because its molecule contains a sulfonic acid group, which is hydrophilic, so it can make the compound have a certain solubility in water. However, its solubility in non-polar organic solvents such as alkanes is very small, because of the presence of hydrophobic parts such as aromatic rings in the molecule.
Besides the melting point, the determination of the exact melting point is crucial to identify its purity. When the temperature rises to a certain level, the compound will change from solid to liquid. The melting point range depends on its purity. The melting point of pure products is relatively fixed. If impurities are contained, the melting point decreases and the melting range becomes wider.
In terms of chemical properties, the molecule contains azo groups, and this group has certain chemical activity. Under the action of light or specific chemical reagents, azo groups can undergo cis-trans isomerization reactions, which is of great significance in the field of photoresponsive materials. At the same time, the nitro group on the benzene ring is also an active check point. The nitro group has strong electron absorption, which can reduce the electron cloud density of the benzene ring, which in turn affects the reactivity of the groups connected to it. The p-toluenesulfonyloxy group is also an easy-to-leave group, which is prone to substitution reactions in the presence of basic or nucleophilic reagents. This property can be used to introduce other functional groups in organic synthesis.
In addition, the stability of this compound is also worthy of attention. Under normal storage conditions, its chemical structure can be maintained relatively stable if it avoids light, high temperature and contact with strong oxidizing and reducing agents. However, in the strong acid and alkali environment, its molecular structure may be damaged, triggering reactions such as hydrolysis and decomposition.

Sodium + 4 - [[4 - [2 - Methyl - 4 - (P - Tolylsulfonyloxy) Phenyl] Azophenyl] Amino] - 3 - Nitro - Benzenesulfonate, is also a chemical. When using it, you should pay attention to things as a whole, and you must not ignore it.
The first one is the nature of this chemical. It has specific chemical properties, or has anti-chemical activities, and when other things meet, it is afraid of strong reactions. Therefore, when using it, you must first know its chemical properties, such as acid properties, oxidation properties, and original properties, in order to be appropriate and avoid accidents.
Furthermore, safety and prevention are of paramount importance. This chemical substance may be toxic, corrosive, or harmful to humans. Users should take precautions against damage, such as protective clothing, gloves, and eyes, for their own safety. And the operation is good, so as not to cause harmful accumulation and endanger people.
The method of survival should not be ignored. Depending on its nature, it is suitable for the environment. Avoid moisture, high temperatures, and open flames to prevent them from being damaged or causing danger. If it does not exist, it may cause the object to fail, or it may become damaged.
Operate the hand, and strive for refinement. According to the established method, follow the steps step by step. Do not measure, mix, and reverse steps, all with caution. A slight mistake, or cause negative results, or cause danger.
You also need to pay attention to the shadow of its environment. If you use it, it will not work, or it will not dye the environment. Therefore, it should be kept safe and properly placed, so as to be natural.
Therefore, use Sodium + 4 - [4 - [2 - Methyl - 4 - (P - Tolylsulfonyloxy) Phenyl] Azophenyl] Amino] - 3 - Nitro - Benzenesulfonate, and pay attention to the properties, safety prevention, survival methods, operation methods, and environment shadows. Only in this way can you ensure the safety, effectiveness, and harmlessness of use.