P-Toluene Sulfonic Acid, Monohydrate

Lingxian Chemical

Specifications

HS Code	711498
Chemical Formula	C7H10O5S
Molar Mass	190.216 g/mol
Appearance	White crystalline solid
Odor	Odorless
Density	1.24 g/cm³
Melting Point	96 - 99 °C
Boiling Point	Decomposes
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in ethanol, slightly soluble in benzene
Acidity	Strong organic acid
Pka	约 -2.8

Packing & Storage

Packing	1 kg of P - Toluene Sulfonic Acid, Monohydrate in a sealed plastic - bag package.
Storage	P - Toluene Sulfonic Acid, Monohydrate should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources, ignition sources, and incompatible substances like strong oxidizing agents. Store in tightly - sealed containers to prevent moisture absorption and maintain its chemical integrity. Avoid storage near food and beverages.
Shipping	P - Toluene Sulfonic Acid, Monohydrate is shipped in well - sealed containers to prevent moisture absorption and spillage. It requires careful handling due to its acidic nature, and is transported in accordance with hazardous chemical shipping regulations.

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General Information

Historical Development

"On the Development of p-toluenesulfonic Acid Monohydrate"
Taste the technology of chemistry, changing with each passing day, and the research of substances has also made great progress. P-toluenesulfonic acid monohydrate has gradually become more and more important in various fields of chemistry.
At the beginning, the world did not know its nature and did little research. After being explored by various scholars, its characteristics gradually became clear. In the field of organic synthesis, it can be used as an efficient catalyst to help smooth the reaction and improve the yield.
In the past, this substance was mostly imported from foreign countries, and its price was high and rare. However, today is different from the past. Scholars in our country have worked hard to study its method, and their skills have gradually become mature. Locally produced, with excellent quality, it is not only self-sufficient, but also exported to other states. Looking at its development path, from unfamiliar to skilled, it really depends on the hard work of all the sages, and adds a brilliant chapter to the history of chemistry.

Product Overview

"Description of P-Toluene Sulfonic Acid Monohydrate"
Now there is P-Toluene Sulfonic Acid, Monohydrate. Its shape is often crystalline, the color is nearly colorless, or slightly yellow, crystal clear and shiny. Its properties are universal to acids, and it has a wide range of uses in the field of organic synthesis. It can be used as a catalyst to promote the progress of many reactions, such as esterification, which can increase the reaction speed and improve the efficiency. And its stability is acceptable. However, when conditions such as water and heat change, it is also necessary to pay attention to the change of its properties. In the process of chemical preparation, it is made through a specific process to ensure its purity and quality, in order to meet the needs of all parties. In the chemical industry, it is an indispensable product.

Physical & Chemical Properties

"P - Toluene Sulfonic Acid, Monohydrate"
P - Toluene Sulfonic Acid, Monohydrate, that is, toluene sulfonic acid monohydrate, which is an important chemical compound. This substance is white crystalline and acidic. Melting at 103-105 ° C, at this degree, solid liquid. Its solubility is good, easily soluble in water, alcohol ether and other polysoluble.
In terms of chemical properties, due to the sulfonic acid group, acidic, it can be used as a catalyst for synthesis, such as esterification. And it has a certain water absorption, which is easy to absorb moisture in humid environments. The storage tank needs to be sealed to avoid moisture, and its performance is not affected. In the chemical research industry, it is very important to be familiar with its physical and chemical properties.

Technical Specifications & Labeling

Today there is P-Toluene Sulfonic Acid, Monohydrate, and its process specifications and identification (product parameters) are the key. Looking at its process specifications, it is necessary to comply with precise laws, from raw material selection to all aspects of the process, strict regulations should be followed. The raw materials must be pure, and the impurities must be few in order to obtain good quality. In the process, temperature, duration and other factors must be carefully controlled, and there is a slight difference, or the quality is not enough.
When it comes to identification (product parameters), the number of content and the standard of purity should be clear. When the content reaches a certain exact value, the purity must also be specific, so that the user can see at a glance, so as to determine what it is suitable for. In this way, the compliance of P - Toluene Sulfonic Acid, Monohydrate products, in all kinds of use, to do their best, live up to expectations.

Preparation Method

This product is made of P-Toluene Sulfonic Acid, Monohydrate. First take an appropriate amount of toluene, and heat it with concentrated sulfuric acid. This is the beginning of the raw material and reaction. During this period, the temperature is properly controlled, and it should not be too much to avoid impurities. After the reaction is completed, quench it with water, followed by distillation to remove its impurities. Compound with the art of crystallization to obtain a pure product. When it crystallizes, it is necessary to pay attention to the temperature and humidity to obtain a good crystal. The conversion mechanism is that the sulfonic acid group replaces the hydrogen of toluene to form this sulfonic acid compound, and then hydrates it to obtain this hydrate. After various steps, this high-quality P-Toluene Sulfonic Acid, Monohydrate can be obtained.

Chemical Reactions & Modifications

P-Toluene Sulfonic Acid, Monohydrate, also belongs to the genus of sulfonic acid. It is very effective in various chemical reactions.
It is often a catalytic agent, which can promote the speed of the reaction, change the way it should be, and make the reaction easy to occur. In the field of organic synthesis, such as the esterification reaction, it can increase the amount of ester formation, and make the reaction conditions tend to be milder.
However, this substance can also be improved. Although its acidity is strong, its selectivity may not be sufficient. Therefore, when thinking about changes, new methods should be developed to increase the selectivity of the reaction. Or by modifying its structure, specific groups can be added to make it more targeted in specific reactions. In this way, its chemical properties can be optimized, and it can play a more outstanding role in the chemical industry.

Synonyms & Product Names

In the field of chemical industry, there are names P-Toluene Sulfonic Acid, Monohydrate. There are many aliases for this product, and it is also known as different trade names in the industry. It is also called p-toluenesulfonic acid monohydrate, which is an important member of the sulfonic acid class.
p-toluenesulfonic acid monohydrate has significant effect in various chemical processes. It is often a catalyst for organic synthesis, which helps the reaction go smoothly and improves the yield. It is active, and in many chemical reactions, such as craftsmen transporting catties, it makes the best use of the product.
The trade names vary from region to region and trade name. However, its essence is this unique compound. Although the names are different, they are all indispensable materials in the chemical industry and contribute greatly to the prosperity of the industry.

Safety & Operational Standards

"P - Toluene Sulfonic Acid, Monohydrate Product Safety and Operation Specifications"
P - Toluene Sulfonic Acid, Monohydrate (p-toluenesulfonic acid monohydrate), a common chemical product. When using it, it is the first priority to be safe and careful.
Its sexual corrosion can cause injury if it touches the skin or enters the eyes. Therefore, when handling this object, the protective equipment must be comprehensive. Wear anti-corrosion gloves to prevent hand contact; wear protective clothing to cover the body completely; wear protective goggles to protect the eyes from its damage.
Operate in a well-ventilated place to avoid its gas accumulation. If it is used in a narrow room, it must be equipped with a ventilated machine to induce air to go out and keep the air fresh.
When storing, it should be placed in a cool and dry place, away from fire and heat sources. Store separately with alkalis and oxidants to avoid their contact and change.
If it accidentally touches the skin, rinse quickly with a lot of water, and then wash with soap. If it enters the eye, immediately buffer with water and seek medical treatment.
If this thing leaks, cut off the fire source first, and do not let it explode. When a small leak occurs, cover it with sand, vermiculite, etc., and collect it. If a large leak is blocked by the embankment, pump it to a special container, and deal with it carefully.
Those who operate this object must be familiar with its characteristics and abide by this specification in order to ensure safety and success.

Application Area

Today there is P-Toluene Sulfonic Acid, Monohydrate, which is widely used. In the field of organic synthesis, it is often a catalyst. For example, the reaction of alcohol and carboxylic acid to form esters, adding this substance can promote its speed and improve its yield. In chemical preparation, it can help sulfonate aromatic hydrocarbons to obtain sulfonic acid products, which are used in the preparation of detergents and other substances. In some drug synthesis steps, it also has its own shadow, which is formed into a specific structure by its catalytic power. These applications depend on its unique chemistry, which can lead to smooth reactions under suitable circumstances, and are important for the chemical, pharmaceutical and other industries.

Research & Development

I have been studying P-Toluene Sulfonic Acid, Monohydrate for a long time. This material is stable and beneficial in organic synthesis. At the beginning, the preparation method was studied, but failed repeatedly, and the ratio of raw materials and reaction temperature were difficult to be accurate. However, after unremitting research, the best method was finally obtained. It was co-heated with toluene and concentrated sulfuric acid, and the temperature control was timely, and the purity of the product was quite high.
Then its application was explored. In the esterification reaction, the catalytic effect was significant and the yield was also good. Looking at its development, with the advance of chemical technology, its demand grew. In order to meet the needs of the market, we should consider optimizing production and reducing costs and improving efficiency. And at the end of environmental protection, we also need to pay attention to make the preparation and application meet the green way. Only in this way can we move forward steadily in the path of scientific research and industry and make achievements.

Toxicity Research

The industry of chemical industry is related to people's livelihood, and chemical substances have their own characteristics. In today's words, P-Toluene Sulfonic Acid, Monohydrate should not be ignored in toxicity research.
This substance may have a specific appearance, but its potential toxicity needs to be investigated in detail. In the context of experiments, try it with all kinds of creatures and observe its reaction. Observe its impact on living organisms, or disturb their physiological functions, and damage their internal organs.
The study of toxicity is related to human safety and the integrity of things. Although it may have functions in chemical processes, its toxicity is unknown, and it is like a mountain in the back. Therefore, studying its toxicity, probing its depth, and clarifying its source of harm is the heavy responsibility of the chemical industry, so that this industry is prosperous and harmless, and the people are safe and prosperous.

Future Prospects

Today there is P-Toluene Sulfonic Acid, Monohydrate, which is widely used in the field of chemical industry. Although there are some achievements now, there are still great prospects for the future.
Looking at its future, first, in the field of catalytic reactions, it is expected to improve its efficiency, increase the rate of reaction, increase the yield, and be able to adapt to more complex reaction systems. Second, in the field of material synthesis, it may be possible to use its characteristics to develop new materials, give new energy to materials, and explore new areas of material application. Third, at the environmental protection level, it is hoped that the method of preparation and use can be optimized, and its impact on the environment can be reduced, reaching the green chemistry.
Our generation of chemical researchers should be enterprising and explore the unknown, hoping that this substance will shine in the future and contribute to the prosperity of chemical industry and the advancement of science and technology.

Frequently Asked Questions

P-Toluene Sulfonic Acid, What is the main use of Monohydrate?

P-toluenesulfonic acid monohydrate is widely used. In the field of organic synthesis, it is often used as a catalyst. In many organic reactions, the rate of many reactions is slow, and it can speed up the reaction process, such as esterification reaction. Alcohol and carboxylic acid want to form esters. Without this catalyst, the reaction may take a long time. However, it has its help, and the reaction can be carried out efficiently, greatly improving the production efficiency of esters.
In chemical production, it also plays a key role. For the manufacture of dyes, fragrances, etc., many steps depend on its catalysis. Taking dye synthesis as an example, it can promote the combination of various raw materials according to the established reaction path to produce dye products with bright color and good stability, ensuring the orderly progress of chemical production.
Furthermore, in the field of pharmaceutical synthesis, it is also indispensable. The drug synthesis process is complex, and many reaction steps require precise catalysis. P-toluenesulfonic acid monohydrate can accurately guide the reaction direction, improve the generation ratio of target drug components, provide important support for pharmaceutical research and development and production, and help synthesize drugs with exact efficacy. In short, because of its unique catalytic properties, it plays an important role in organic synthesis, chemical production, medicine and many other fields, promoting the development of various industries.

P-Toluene Sulfonic Acid, What are the Physical Properties of Monohydrate

p-Toluenesulfonic acid monohydrate is a common compound in organic chemistry. It has many unique physical properties.
Looking at its appearance, under room temperature and pressure, it is a white crystalline solid, just like winter snow, pure and delicate. Its smell is slightly special, although not pungent and intolerable, it is also different from ordinary tasteless things.
When it comes to solubility, this compound has good solubility in water, just like fish entering water, it can quickly melt with water to form a uniform solution. In addition, it also shows a certain solubility in organic solvents such as alcohols and ethers, which makes it more effective in many organic reactions by virtue of the characteristics of different solvents. The melting point of p-toluenesulfonic acid monohydrate is also one of its important physical properties. The melting point of p-toluenesulfonic acid monohydrate is within a specific range, and this temperature limit is of great significance for the morphological transformation of compounds. When the temperature rises near the melting point, the solid crystal gradually softens and eventually turns into a liquid state. This process is like the melting of ice, quietly and orderly.
Furthermore, its stability is also worth mentioning. Under normal conditions, p-toluenesulfonic acid monohydrate is relatively stable. However, in case of high temperature, open flame or contact with specific substances, or chemical reactions, it is necessary to pay attention to the influence of environmental factors when storing and using to prevent accidents.
From the above, it can be seen that the physical properties of p-toluenesulfonic acid monohydrate play a key role in the fields of organic synthesis and catalytic reactions, providing an important material basis for chemists to perform their skills.

P-Toluene Sulfonic Acid, Monohydrate What are the precautions during storage and transportation

P-toluenesulfonic acid monohydrate is a commonly used reagent in organic chemistry. During storage and transportation, the following things should be paid attention to:
First, the storage environment is the most critical. This substance should be placed in a cool, dry and well-ventilated place. If the environment is humid, it is easy to absorb moisture and deteriorate, and its chemical activity changes due to the structure or influence of the hydrate. And high temperatures are not suitable. High temperatures may cause decomposition reactions, which will damage its quality. Be sure to keep away from fires and heat sources, because it is flammable, in case of open flames, hot topics or risk of combustion.
Second, the packaging must be tightly closed. Use suitable packaging materials, such as sealed glass bottles or plastic bottles, to prevent excessive contact with air. If the package is damaged, the moisture and oxygen in the air can easily interact with it and accelerate deterioration.
Third, when transporting, ensure that the container is stable and avoid collision and dumping. Because it is a chemical, it vibrates or causes damage to the package, and there is a risk of leakage. Once it leaks, it will not only waste reagents, but also cause pollution to the environment, and even endanger human health. Transportation vehicles should also have corresponding fire and moisture-proof measures.
Fourth, isolation from other substances should not be ignored. It should not be mixed with oxidants, alkalis, etc. Because it is acidic, it will neutralize with alkalis, contact with oxidants or cause violent chemical reactions, increasing safety risks. In conclusion, when storing and transporting p-toluenesulfonic acid monohydrate, it is necessary to consider various aspects such as environment, packaging, transportation conditions, and material isolation to ensure its quality and safety.

P-Toluene Sulfonic Acid, Monohydrate Preparation

There are several ways to prepare p-toluenesulfonic acid monohydrate.
First, toluene is used as raw material and obtained by sulfonation reaction. The toluene is placed in a reactor, and concentrated sulfuric acid is slowly added. This process requires strict control of temperature and reaction time. Because the sulfonation reaction is an exothermic reaction, if the temperature is too high, it is easy to produce side reactions and cause the product to be impure. Usually the temperature is controlled within a certain range, such as between 100-120 ° C, and the reaction is carried out for several hours. After the reaction is completed, the product is cooled. After the separation and purification steps, p-toluenesulfonic acid can be obtained, and then it is combined with an appropriate amount of water to obtain p-toluenesulfonic acid monohydrate. This is a more commonly used method. However, concentrated sulfuric acid is highly corrosive, and care must be taken during operation, and the post-reaction treatment process is also more complicated.
Second, p-toluenesulfonyl chloride is used as raw material. p-toluenesulfonyl chloride is hydrolyzed with water to form p-toluenesulfonic acid. After crystallization and drying, p-toluenesulfonic acid monohydrate is obtained. In this process, when p-toluenesulfonyl chloride is hydrolyzed, the reaction conditions, such as pH and temperature, need to be controlled. Generally speaking, hydrolysis under appropriate alkaline conditions, followed by acid neutralization, promotes the precipitation of p-toluenesulfonic acid. The product obtained by this method has high purity, but it is irritating to toluenesulfonyl chloride, and the raw material cost is relatively high.
Third, the ion exchange resin catalysis method is used. Toluene and sulfuric acid are used as raw materials, and the sulfonation reaction is carried out under the catalysis of ion exchange resin. The ion exchange resin can be reused, and the reaction conditions are relatively mild, and the product separation is also convenient. During the reaction, toluene, sulfuric acid and ion exchange resin are mixed, and the reaction is stirred at a suitable temperature. After the reaction, the ion exchange resin is separated by filtration and other means, and the reaction solution is treated to obtain p-toluenesulfonic acid monohydrate. This method is green and environmentally friendly, and has good application prospects. However, the selection and regeneration of ion exchange resin requires certain technology and cost.

P-Toluene Sulfonic Acid, Monohydrate What is the impact on the environment

p-Toluenesulfonic acid monohydrate, the impact of this substance on the environment cannot be ignored.
Its nature has the characteristics of acid, and if it accidentally flows into natural water bodies, it can cause water acidification. The acid-base balance of water is broken, and aquatic organisms bear the brunt. Fish, shellfish, etc. may be difficult to adapt to this change, their survival and reproduction will be hindered, and the community structure will also change. Algae growth or stimulation may cause the risk of eutrophication of water bodies, and then the amount of dissolved oxygen in water bodies will decrease, and the stability of aquatic ecosystems will be lost.
In the soil environment, if it penetrates, it can change the soil pH and make the soil slightly acidic. In this way, the morphology and availability of nutrients in the soil change, and the uptake of nutrients by plant roots may be hindered. The community and activity of soil microorganisms are also affected, affecting the material cycle and ecological function of the soil.
In the atmosphere, although its volatilization is limited under normal conditions, under specific conditions, such as high temperature or strong ventilation, acid mist or air pollution, irritate the respiratory tract, affect air quality, and are unfavorable to human and animal health and surrounding ecology.
And it is a commonly used reagent for organic synthesis. If it is not properly disposed of in industrial production, a large amount of emissions will increase the environmental load. Therefore, all aspects of its use, storage and disposal need to be taken carefully to reduce its harm to the environment and protect the ecological safety.