4-Nitrotoluene-2-Sulphonic Acid

Lingxian Chemical

Specifications

HS Code	935559
Chemical Formula	C7H7NO5S
Molar Mass	217.20 g/mol
Appearance	Yellowish - brown crystals or powder
Solubility In Water	Soluble
Odor	Odorless
Melting Point	127 - 130 °C
Boiling Point	Decomposes before boiling
Acidity	Weak acid
Stability	Stable under normal conditions, but can decompose on heating

Packing & Storage

Packing	"50 - kg bags packaging for 4 - Nitrotoluene - 2 - Sulphonic Acid chemical."
Storage	4 - Nitrotoluene - 2 - Sulphonic Acid should be stored in a cool, well - ventilated area, away from heat sources and direct sunlight to prevent decomposition. Keep it in tightly sealed containers to avoid moisture absorption. Store separately from oxidizing agents, bases, and incompatible materials to prevent chemical reactions. Follow proper labeling and inventory management for safety.
Shipping	4 - Nitrotoluene - 2 - Sulphonic Acid should be shipped in tightly sealed containers made for chemicals. Follow all regulations for hazardous substances, ensuring proper labeling, and safe handling during transportation to prevent spills and environmental harm.

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General Information

Historical Development

Taste the industry of chemical industry, the category is rich. Today's words 4 - Nitrotoluene - 2 - Sulphonic Acid, its history can also be investigated. In the past, the chemical industry was prosperous, and all the sages tried their best to study it. At the beginning, in the way of organic synthesis, it was difficult to explore.
And as for a certain time, the craftsmen paid attention to this acid. Initial preparation, the method was crude and simple, and the yield was not abundant. However, all the workers were reluctant to study, and the skills changed over the years. Improve the conditions of the reaction and optimize the complexity of the process.
As the years passed, due to the increasing demand for industry, the research on this acid became deeper and deeper. The process was refined, from the simple at the beginning, to the complete. In the field of chemical industry, its use is also expanding, either as the basis for dyes or as a material for other industries. Looking at the way of its development, it is actually the hard work of various sages. Moving forward with the times, this product must also be used in the chemical industry to develop its more capabilities.

Product Overview

4-Nitrotoluene-2-sulfonic acid is also used as a chemical compound. Its color may be light, and it is in the shape of a solid. This is the most important thing. It is suitable for dyes and industrial applications.
The method of obtaining it mostly starts with 4-nitrotoluene, which is obtained by the reverse of sulfonation. In reverse, it is necessary to control the temperature of the parts, such as the temperature, the temperature and the dosage, etc., to ensure the yield of the product.
In terms of its properties, it is acidic and soluble in a specific solution. Among them, the presence of the nitro-sulfonic acid group gives it a special chemical activity, which enables it to synthesize and reverse multiple compounds, providing an important basis for chemical compounds. In addition, 4-nitrotoluene-2-sulfonic acid plays an important role in chemical engineering and has a deep impact.

Physical & Chemical Properties

4-Nitrotoluene-2-sulfonic acid, with special physical properties. Its color may be light, and it is crystalline, and it is usually determined under normal conditions. Melting properties are due to the molecular properties, resulting in a specific degree of melting. In terms of solubility, it shows different surfaces in water and partial solubility. The solubility of water is limited, and in some solvents, it can be easily miscible.
Its chemical properties are also worth exploring, because it contains nitro-sulfonic acid groups, which have certain reactivity. Nitro groups can cause it to be oxidizing, and sulfonic acid groups make compounds acidic, capable of neutralization and reaction. The mutual influence of the two makes 4-nitrotoluene-2-sulfonic acid show a special reaction path in the polychemical reaction, which is of great significance in chemical research and engineering.

Technical Specifications & Labeling

4-Nitrotoluene-2-sulfonic acid is also a chemical product. Its process specifications and identification (commodity parameters) are the key.
To make this product, follow specific process regulations. The selection of raw materials needs to be refined, the proportions must be accurate, and the reaction conditions must also be strictly controlled. Temperature, pressure, and reaction time are all factors that affect the product. If the temperature is inappropriate, or the reaction is skewed, the product is impure.
In terms of its identification, the commodity parameters should be detailed. The purity geometry and impurities must be clearly marked. In this way, the user can understand its quality and apply it.
And the packaging and storage of this product are also determined. Packaging should be able to maintain its stability, and storage should be in a cool and dry place, protected from water, fire, and oxidation, in order to meet the needs of various industries.

Preparation Method

To prepare 4 - Nitrotoluene - 2 - Sulphonic Acid, the method is as follows: First prepare toluene as the raw material, this is the starting base. Added with concentrated sulfuric acid and fuming sulfuric acid, both of which are crucial in the reaction. Slowly inject toluene into sulfuric acid, control its rate, and do not overdo it. At an appropriate temperature, usually about one hundred to one hundred and twenty degrees, so that the phase is combined. Stir continuously, so that it is uniform. This is the step of sulfonation. The sulfonic acid group enters the position of toluene to obtain the corresponding sulfonic acid product.
Next, mix concentrated nitric acid and concentrated sulfuric acid to form a mixed acid, and slowly add it. The reaction should be at a low temperature, about 30 to 40 degrees. This is the process of nitrification, and the nitro group also enters, resulting in 4-Nitrotoluene-2-Sulphonic Acid. After the reaction, the pure product can be obtained by separation and purification methods, such as extraction, crystallization, etc., removing impurities and storing sperm. In each step, the temperature, speed, and the ratio of agent need to be carefully controlled to obtain good results.

Chemical Reactions & Modifications

In this study, 4 - Nitrotoluene - 2 - Sulphonic Acid was modified by reaction. This compound is unique in nature, and the investigation of its reaction is important in chemical research.
Its reaction is reversed, or it involves substitution and addition. In order to understand its reaction, it is necessary to study the molecular and sub-cloud separation. Or due to the steric resistance and sub-effect of nitro and sulfonic acid groups, the reaction path is not effective.
Modification is aimed at its novelty. Or change its solubility to facilitate dispersion in solution; or increase its quality to avoid decomposition caused by environmental factors. It can be modified, new groups are introduced, and the force of the whole molecule is modified. Research on these two, hope to expand their use, and have new applications in the fields of chemical industry and materials.

Synonyms & Product Names

4-Nitrotoluene-2-sulfonic acid, also known as p-nitro-o-toluenesulfonic acid. It has many different names, which are often due to differences in regions, uses and processes. In the field of dye synthesis, or the name of a specific dye intermediate; in the preparation of fine chemicals, it also has a unique commercial name.
Looking at its name, "4-nitrotoluene-2-sulfonic acid", it is precisely named according to the chemical structure, and the order of nitro, sulfonic acid group and toluene is determined. The commercial name is more practical in the market, or highlights its excellent dyeing assistance, or highlights its efficient catalysis in specific reactions, all to meet industrial needs.
The heteronym of this substance and the complexity of the trade name attest to the wide range of chemical fields and the rich application. Although the names are different, the quality is the same, all of which are important for promoting the chemical industry.

Safety & Operational Standards

"Code of Safety and Operation of 4-Nitrotoluene-2-Sulphonic Acid"
For 4-Nitrotoluene-2-Sulphonic Acid, it is also a chemical substance. If you want to make this substance, you must follow the safety standards of the operating conditions in order to protect it.
The first thing to do is to ensure the safety of the environment. The place where it is handled is well and good, so as to dissipate harmful substances. And it is appropriate to eliminate fire sources and sources to prevent accidental fires and explosions.
As for the method of operation, the operator must use anti-pollution equipment, such as eyewear, gloves, gas masks, etc. To prevent its objects from contacting the skin, eyes, or inhaling and causing harm.
Furthermore, if you take the amount, you must be fine. According to the established program, operate with caution and do not act recklessly. In case of mixing, adding and other steps, especially pay attention to its reaction, control the degree and rate, and do not exceed the moment.
If this thing accidentally spills out, it will be dealt with according to the law. Small amounts can be collected by adsorbed materials; large spills can be quickly controlled, evacuating people and preventing the spread of harm.
In addition, if it is not stored, it will prevent the dryness, pollution, and communication, and prevent oxidation and original substances from reacting. And there are clear warnings to make people aware of its danger.
In addition, the research and production of 4 - Nitrotoluene - 2 - Sulphonic Acid must be based on safety and abide by the operation rules. In this way, it is appropriate to avoid problems.

Application Area

Today there is a product, named 4 - Nitrotoluene - 2 - Sulphonic Acid. The application field of this product is quite wide. In the field of chemical industry, it is often the raw material for the synthesis of many fine chemicals. It can undergo delicate chemical reactions to produce colorful and excellent dyes, which add color to the printing and dyeing industry. In the field of pharmaceutical synthesis, it also has its own figures, or participates in the preparation of key drug intermediates, which helps in pharmaceutical research and development.
Furthermore, in the field of pesticide production, its role should not be underestimated, or it can be used as an important component in the synthesis of efficient and low-toxic pesticides, contributing to the prevention and control of agricultural pests and diseases. From this point of view, 4 - Nitrotoluene - 2 - Sulphonic Acid plays an important role in many application fields and has far-reaching significance for the development of various industries.

Research & Development

I am committed to the research of 4 - Nitrotoluene - 2 - Sulphonic Acid. This compound has unique properties and has considerable potential in various fields of chemical industry.
At first, I carefully investigated its physicochemical properties and explored the wonders of its structure. After repeated experiments, I knew the law of its reaction and the reason for its characteristics. Then, I studied its preparation method, and strived to improve, hoping to obtain efficient and pure products.
At the application end, I also continued to explore. Examine its effectiveness in dyes, medicine and other industries, hoping to expand its path and increase its value. During this period, I encountered problems repeatedly, but I persevered and failed repeatedly.
Today, I have made progress in my research on 4 - Nitrotoluene - 2 - Sulphonic Acid. However, with the development of science and technology, I will continue to forge ahead, hoping to make more breakthroughs and contribute to its development, so as to benefit the industry and everyone.

Toxicity Research

Using chemical techniques to explore the properties of substances is related to people's livelihood and safety. Today there is 4-Nitrotoluene-2-Sulphonic Acid, and the investigation of its toxicity is a top priority.
Looking at its structure, the nitro group and the sulfonic acid group are combined with toluene. Nitro groups are often oxidizing and toxic. Although the sulfonic acid group increases its water solubility, it should not be ignored.
After various experiments, observe its effects on organisms. When fed to mice, in small doses, they may be seen to move slightly slowly and eat slightly less; in large doses, they can cause damage to organs, especially liver and kidney. Looking at its presence in water bodies, it is also harmful to aquatic organisms, the growth of algae is inhibited, and the vitality of fish and shrimp is gradually lost.
From this perspective, the toxicity of 4-Nitrotoluene-2-Sulphonic Acid cannot be underestimated. During production and use, care must be taken to prevent its escape and protect the environment and personal safety.

Future Prospects

This 4 - Nitrotoluene - 2 - Sulphonic Acid is unique and has a wide range of uses. In the field of chemical industry, the potential is quite huge. The future prospect is really imaginative.
Or it can optimize the process, so that its yield increases and the quality is better. This can not only reduce costs, but also increase efficiency, which is of great benefit to the development of industry. And it can explore its new uses and expand the territory of applications. For example, in the pharmaceutical, materials and other industries, it may be able to make a new face and create extraordinary value.
Furthermore, pay attention to its impact on the environment, develop environmental protection methods, and make production and ecology coexist harmoniously. In this way, 4 - Nitrotoluene - 2 - Sulphonic Acid will surely shine in the future, leading the chemical industry to a new journey, achieving brilliance, and seeking well-being for future generations.

Frequently Asked Questions

What are the main uses of 4-Nitrotoluene-2-Sulphonic Acid?

4-Nitrotoluene-2-sulfonic acid is an organic compound. It has a wide range of uses and is often an important chemical raw material in the industrial field.
First, in the dye synthesis industry, this compound has a significant effect. It can provide key intermediates for the preparation of a variety of brightly colored dyes. Through a series of chemical reactions, 4-nitrotoluene-2-sulfonic acid can be converted into dye molecules with specific structures, giving fabrics colorful colors for textile, printing and dyeing industries. The dyes it participates in the construction have stable structure and long-lasting color, which can meet the needs of various fabric dyeing.
Second, it is also of great significance in the field of pharmaceutical synthesis. Using it as a starting material, some pharmaceutical ingredients with specific pharmacological activities can be prepared through ingenious reaction routes. Through the modification and transformation of its chemical structure, effective drugs for specific diseases can be developed, contributing to human health and well-being.
Third, in the field of pesticides, 4-nitrotoluene-2-sulfonic acid is also involved. It can be used as a raw material for the synthesis of some high-efficiency pesticides. Such pesticides have good control effects on crop pests, help to improve crop yield and quality, and ensure the smooth progress of agricultural production. In addition, in the study of organic synthetic chemistry, it is often used as a model compound for researchers to explore various chemical reaction mechanisms and conditions optimization, providing an important reference for the development of organic synthesis methodologies and promoting the continuous progress of theory and practice in the field of organic chemistry.

What are the physical properties of 4-Nitrotoluene-2-Sulphonic Acid?

4-Nitrotoluene-2-sulfonic acid is one of the organic compounds. Its physical properties are quite important and relevant to its many applications.
First appearance, usually in a solid state, the color may be light yellow to light brown, depending on the purity and preparation method. Its texture may be crystalline and have a certain crystal structure, which is also manifested in its physical properties.
Times and melting point, about a specific temperature range, this value is a key indicator for identifying and purifying this substance. The exact value of the melting point can vary slightly due to factors such as purity, but the approximate range is relatively stable. The characteristic of its melting point makes it possible to realize the transformation of solid state and liquid state under specific temperature conditions, which is of great significance in chemical operations such as melting and crystallization.
Furthermore, when it comes to solubility, it has a certain solubility in water, but it also depends on temperature and other conditions. Generally speaking, when the temperature increases, its solubility in water may increase. In addition to water, it is also soluble in some organic solvents, such as some alcohols and ketone solvents. This property provides various possibilities for its synthesis and separation process.
Compound density, which is a physical quantity measuring its unit volume mass. Specific density value reflects structural information such as the degree of molecular packing compactness. In practical applications such as mixing and separation, density factors cannot be ignored, and are related to the properties of material stratification and flow.
In addition, the stability of 4-nitrotoluene-2-sulfonic acid is also an important physical property. Under normal temperature and pressure, it has a certain stability. However, it encounters specific conditions such as high temperature and strong oxidizing agent, or chemical changes occur, which affects its physical state and properties.
To sum up, the physical properties of 4-nitrotoluene-2-sulfonic acid, such as appearance, melting point, solubility, density and stability, are related to each other and jointly determine its application and treatment methods in chemical industry, scientific research and other fields.

What are the chemical properties of 4-Nitrotoluene-2-Sulphonic Acid?

4-Nitrotoluene-2-sulfonic acid, which is a kind of organic compound. It has the characteristics of acid, which can be partially separated and dissolved in water, releasing hydrogen ions, so it is acidic.
Its appearance is mostly solid, and the color is white or nearly white, with certain stability. However, under specific conditions, it will also show active chemical properties.
When it comes to reactivity, it has unique properties due to the presence of nitro and sulfonic acid groups. Nitro has strong electron absorption, which can reduce the density of the electron cloud of the benzene ring, weaken the activity of the electrophilic substitution reaction of the benzene ring, but can make the density of the adjacent and para-position electron clouds relatively concentrated, making it an activity check point for nucleophilic substitution reactions. The sulfonic acid group is a strong hydrophilic group, which gives the compound a certain water solubility and can enhance its acidity.
This compound can participate in many chemical reactions. For example, the nitro group can be reduced to an amino group to generate 4-aminotoluene-2-sulfonic acid, which is an important step in the preparation of dyes and pharmaceutical intermediates. Its sulfonic acid group can react with a base to generate corresponding sulfonates, which are used in the preparation of surfactants and the like.
In addition, 4-nitrotoluene-2-sulfonic acid is widely used in the field of organic synthesis and can be used as a key intermediate for the synthesis of complex organic compounds. In the dye industry, it is often the raw material for the synthesis of a variety of bright-colored dyes. Because the groups contained can participate in various coupling reactions, etc., it helps to construct dye molecules with specific colors and properties.

What are the production methods of 4-Nitrotoluene-2-Sulphonic Acid?

The method of preparing 4-nitrotoluene-2-sulfonic acid has existed in ancient times, and it has changed with the years, and there are also various refined methods.
First, using toluene as the initial raw material, it is first sulfonated. Toluene and concentrated sulfuric acid are co-placed in a suitable reactor, and appropriate temperature and pressure conditions are applied to make it fully react. Concentrated sulfuric acid plays the role of a sulfonating agent, and the sulfonic acid group (-SOH) is introduced into the benzene ring structure of toluene to obtain toluenesulfonic acid. This reaction process requires strict temperature control. Excessive temperature can easily lead to the formation of polysulfonation by-products, which affects the purity of the target product.
Then, the obtained toluenesulfonic acid is nitrified. The mixed acid is prepared with concentrated nitric acid and concentrated sulfuric acid, and the reaction system containing toluenesulfonic acid is slowly added. Under the catalysis of concentrated sulfuric acid, the nitrate ion in the mixed acid is converted into nitroyl positive ion (NO ²), which is an electrophilic reagent and can attack a specific position on the benzene ring. After this nitrification reaction, a nitro group (- NO ³) is introduced into the ortho or para-position of toluenesulfonic acid. Due to the positioning effect of the sulfonic acid group, the nitro group can easily enter a specific position, resulting in 4-nitrotoluenesulfonic acid. This step also requires precise control of the reaction conditions, such as temperature, the proportion of mixed acid, etc., to prevent excessive nitrification or the formation of other isomer impurities.
Second, there is also a method of nitrification and then sulfonation In this process, the nitro group enters the ortho and para-sites of the toluene-benzene ring to form a mixture of o-nitrotoluene and p-nitrotoluene, which needs to be separated and purified to obtain p-nitrotoluene. Subsequently, p-nitrotoluene is then sulfonated with concentrated sulfuric acid, and the sulfonic acid group is introduced into the specific position of p-nitrotoluene to obtain 4-nitrotoluene-2-sulfonic acid. Although this path is slightly complicated, it can better control the reaction process and product purity according to the characteristics of the products at different stages.
These two are common methods for the preparation of 4-nitrotoluene-2-sulfonic acid, each with its own advantages and disadvantages. When implemented, when considering factors such as actual demand, raw material cost, and equipment conditions, choose the best one and use it.

4-Nitrotoluene-2-Sulphonic precautions in the use of Acid

4-Nitrotoluene-2-sulfonic acid. When using this substance, many matters need to be paid attention to.
First, it is related to safety protection. This substance is dangerous to a certain extent, and appropriate protective equipment must be worn when operating. A protective mask is indispensable to prevent dust from entering the body and damaging the respiratory organs; protective gloves and protective clothing are also required to avoid skin contact with it, which may cause skin irritation or even more serious injury.
Second, the use process needs to be cautious. Precisely control the dosage, and measure it with a precise measuring tool according to the specific needs of the experiment or production. Weighing is carried out in a well-ventilated place to prevent dust from spreading in the air. If it is accidentally spilled, it should be cleaned up immediately according to the standard process, and do not leave the residue, so as not to cause subsequent danger.
Third, storage should also be paid attention to. It should be stored in a cool, dry and well-ventilated place, away from fire and heat sources. Do not mix with oxidants, alkalis, etc., because of its active chemical properties, contact with these substances or react violently, causing serious consequences such as explosion.
Fourth, ventilation of the use environment is essential. Ensure smooth ventilation in the working area, install effective ventilation equipment, and remove volatile gas in time, reduce the concentration in the air, and reduce the health threat to the operator and the risk of explosion.
Fifth, properly dispose of the residue and waste after use. Do not dump at will, and must be disposed of in an appropriate manner in accordance with environmental protection and safety regulations to prevent environmental pollution or safety accidents.
In short, the use of 4-nitrotoluene-2-sulfonic acid requires strict compliance with regulations and careful operation from beginning to end to ensure the safety of personnel and the environment, so that the work can proceed smoothly.