2-Toluenesulfonic Acid

Lingxian Chemical

Specifications

HS Code	590287
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	White crystalline solid
Odor	Characteristic, pungent odor
Solubility In Water	Soluble
Melting Point	103 - 105 °C
Boiling Point	Decomposes
Acidity Pka	~ -2.8
Density	1.24 g/cm³ (anhydrous)
Flash Point	180 °C
Hazard Class	Corrosive

Packing & Storage

Packing	500g of 2 - Toluenesulfonic Acid packaged in a sealed, corrosion - resistant bottle.
Storage	2 - Toluenesulfonic acid should be stored in a cool, dry, and well - ventilated area. Keep it away from heat sources, open flames, and oxidizing agents. Store it in tightly - sealed containers made of corrosion - resistant materials, like plastic or lined metal, to prevent leakage and exposure to air and moisture, which could affect its quality.
Shipping	2 - Toluenesulfonic acid should be shipped in tightly - sealed, corrosion - resistant containers. It must be labeled clearly as a hazardous chemical. Transport follows regulations to prevent spills and ensure safety during transit.

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General Information

Historical Development

2-Toluenesulfonic acid is also a chemical substance. Its origin can be traced back to the study of chemistry. In the past, the nature of chemistry and the law of transformation, in the process of general exploration, there was no such thing. At the beginning of the study, we observed the method of its generation, and we worked hard. However, we have been unremitting in research and development, and we have been able to obtain it. Years later, its use has become more and more. Beginning with a small number of specific chemical reactions, we have been involved in many fields, such as chemical synthesis, etc. Because of its unique nature, it can help to reverse the process, so we have focused on research and engineering. The movement of light, the refinement of the law, and the increase in quantity. From the initial research and development, it has been widely used so far. This is the first step in the evolution of the chemical history of 2-toluenesulfonic acid.

Product Overview

2-Toluenesulfonic acid is also a wonder of transformation. Its shape is usually colorless crystals, and it has a special smell. It is soluble in various solvents and has a wide range of uses in the field of chemical industry. This product is often used as a catalyst in organic synthesis. It helps the reaction to proceed quickly, with high efficiency and good results. Such as the synthesis of esters, when alcohol and acid meet, it can form esters, and the yield is considerable. In addition, in the polymerization reaction, it can also promote its formation, so that the quality of the polymer is better. Industrial preparation, using the method of toluene sulfonation. Beginning with toluene and through the process of sulfonation, this acid can be obtained. When preparing, be careful to control the conditions, such as temperature, temperature, and the ratio of agents, to ensure its quality. 2-toluenesulfonic acid has the general nature of acid, and should be used with caution to prevent damage to objects and people. However, its contribution to the chemical industry cannot be underestimated, and it is also relied on by the chemical industry.

Physical & Chemical Properties

2-Toluenesulfonic acid, with the general nature of acid. The solid, the shape and pure color, mostly in the shape of white crystals, dense and regular. The degree of melting is between 104 and 106 degrees Celsius, and it melts when heated, and the liquid is clear. The boiling point is quite high, about 140 degrees Celsius, and it boils under normal pressure and dissolves gas. It is soluble and fast in water, and the water-liquid can be dissociated, showing the sign of acidity. It can phase with alkalis to form salts and water. In organic solvents, it is also soluble and can help the progress of organic reactions. It is also corrosive and erodes all things, so be careful to touch it. Chemical activity is often used as a catalyst for reactions, to promote the process of organic synthesis, and to increase the rate of reactions. It is widely used in the chemical industry.

Technical Specifications & Labeling

2-Toluenesulfonic acid is also an organic compound. Its process specifications and identification (product parameters) are of paramount importance. In the process specifications, the selection of raw materials should be pure and good, and the temperature, pressure and time of the reaction should be precisely controlled. To obtain this by sulfonation, side reactions should be prevented. In terms of identification, the product parameters must be clear. If the purity reaches a very high standard, the impurity content must be slight. The appearance should be white crystalline, and the smell should also have its characteristics. On the packaging, the product name, purity, batch number, etc. should be marked to facilitate identification and use. Storage is also regular, and it is suitable for a cool and dry place to avoid heat, moisture and strong oxidants. In accordance with this process specification and identification, 2-toluenesulfonic acid can be used well.

Preparation Method

The method of making 2-toluenesulfonic acid is related to the raw materials and production process, reaction steps and catalytic mechanism. The raw materials are often toluene and sulfuric acid. First take an appropriate amount of toluene, put it in a special reactor, and then slowly inject sulfuric acid. During the reaction, the temperature needs to be controlled in a suitable range, about one hundred and twenty to one hundred and forty degrees Celsius, which is a good reaction environment. With the help of a specific catalyst, the reaction process is accelerated and the yield is increased. The catalytic mechanism lies in the fact that the catalyst can reduce the activation energy of the reaction, increase the activity of molecules, and increase the collision frequency. After several hours of reaction, after the full reaction is completed, a series of separation and purification steps, such as distillation, crystallization, etc., to obtain pure 2-toluenesulfonic acid. In this way

Chemical Reactions & Modifications

Nowadays, there is a chemical compound, known as 2 - Toluenesulfonic Acid. Its anti-modification is carried out by our research institute. The anti-reaction of this acid is often involved in chemical synthesis, and it can be used as a medium for multi-chemical transformation. < br We will make unremitting efforts to explore and modify this acid in order to gain a deeper understanding and benefit the world.

Synonyms & Product Names

"On 2-toluenesulfonic acid congeners and product names" 2-toluenesulfonic acid is also an important chemical product. The name of its congeners is widely known in the industry. This substance is also known as o-toluenesulfonic acid, which is attached to the methyl ortho-site in its molecular structure. As for its use, it involves a wide range of fields. In the industry of organic synthesis, it is a commonly used catalyst, assisting the progress of many reactions and promoting their efficient transformation. It is active and can change the rate of chemical reactions, causing materials to react according to the expected path and improving the yield of products. In industrial production, many processes depend on it. Or used in the preparation of fine chemicals, or as an auxiliary for the synthesis of special materials. Due to its catalytic power, many products have been obtained, and their names are gradually written in the industry. They are well known and commonly used by chemical practitioners. They are important in the development of chemical industry.

Safety & Operational Standards

2-Toluenesulfonic acid is also an important product in the chemical industry. Its safe production and operation specifications should not be careless. When preparing, the first priority is to ensure the safety of the environment. The place of operation should be well ventilated to avoid the accumulation of gas. If it is in a narrow room and the gas cannot be dissipated, it will cause trouble. And it should be far away from fireworks. This product is flammable, and it will take a while to touch an open fire. When taking it, you must wear protective gear. Wear gloves to prevent it from corroding the skin; wear a mask to avoid its eyes. A little bit of fear, the skin will touch it, and it will burn; if it enters the eye, it will be very harmful. Its storage is also determined. It should be placed in a cool and dry place, away from heat and oxidants. If the storage is improper, it will merge with other substances, and there will be many crises. In the operation room, all kinds of utensils must be clean and neat. After using the utensils, wash them immediately to avoid residue and cause changes. And when stirring, the speed should be appropriate, if the speed is too fast, the liquid will splash, and if it is slow, it will be uneven. Furthermore, the operator must be familiar with its nature. In the process of reaction, pay attention to its changes. The fluctuation of temperature and the change of color should not be ignored. If there is a slight abnormality, take measures quickly. In short, the safe production and operation of 2-toluenesulfonic acid is related to human life and business prosperity. All kinds of norms are coagulated by blood and tears. If you keep them, you will be safe, and if you violate them, you will be at risk.

Application Area

2-Toluenesulfonic acid is widely used in various fields. In the field of organic synthesis, it is often used as a catalyst. For example, in the esterification reaction of alcohols and carboxylic acids, 2-toluenesulfonic acid is used as a catalyst to promote the reaction speed and increase the yield of the product. Because of its strong acidity, it can activate the reactants and reduce the energy barrier required for the reaction. It is also useful in the preparation of drugs. It can assist in the construction of specific drug molecules to ensure accurate reactions and obtain high-purity products. Furthermore, in the field of materials science, 2-toluenesulfonic acid can modify the properties of certain polymers. For example, in the polymerization reaction, by means of its catalysis, the chain length and structure of the polymer can be controlled, so that the material has specific physical and chemical properties to meet the needs of different applications.

Research & Development

Since modern times, chemical refinement has deepened, and the research of substances has deepened. Today's discussion of 2-Toluenesulfonic Acid, its research and progress is of great significance. In the experimental environment, 2-Toluenesulfonic Acid has unique properties and is often the choice of catalysis. It can promote many reactions, increase its rate, and change the path of chemistry, just like the speed of water, the wind helps it travel. In industry, it is also widely used. In the field of organic synthesis, it is a key auxiliary agent, helping to form a variety of products, such as the cornerstone of chemical industry and the backbone of building buildings. It is not easy to develop its quality and expand its use overnight. Scientists, day and night study, analyze its nature, explore its rationale, in order to perfect. After years of work, it is now effective. In the future, I hope to be able to go to the next level, in the catalysis, efficiency, environmental protection, and develop new chapters, for the advancement of chemistry, add bricks and mortar.

Toxicity Research

The toxicity of 2-toluenesulfonic acid is the most important in chemical research. 2-Toluenesulfonic acid, which has the general nature of acid, is widely used in chemical products. However, its toxicity cannot be ignored. Taste the animal as a test to observe its reaction. If it touches the skin, or causes redness, swelling, and burning pain, it shows its irritation. If it inhales its breath by mistake, the lungs may suffer from it, causing coughing and asthma. When it enters the mouth, the stomach is also damaged, vomiting and abdominal pain follow. In summary, it is known that 2-toluenesulfonic acid is toxic, and when used, protection measures are indispensable to protect the human body from its harm and ensure the safety of the environment.

Future Prospects

In the future, 2-toluenesulfonic acid, we are deeply concerned about its prospects. This acid has many uses in the chemical industry. If it is synthesized well, it can be used as a catalyst to accelerate the reverse process and increase the amount of compounds. In today's world, science and technology are new, and the development of technology is rapid. 2-toluenesulfonic acid must be a step ahead, and it can be used in more new fields. Or in the research of new materials, or on the road of color transformation, it can have an extraordinary performance. Our researchers, diligent research, in-depth study of its properties, expand its uses, and hope to help it expand in the future.

Frequently Asked Questions

What are the main uses of Toluenesulfonic Acid?

2-Toluenesulfonic acid (2-Toluenesulfonic Acid) has a wide range of uses. In the field of organic synthesis, it is often used as a catalyst to facilitate many reactions. First, the esterification reaction depends on it. Alcohol and carboxylic acid want to form esters, 2-toluenesulfonic acid can promote the rapid reaction. It can reduce the activation energy of the reaction, making it easy to combine the two into esters, and it can be recycled and reused after the reaction. Second, it is also used for dehydration reactions. If alcohol wants to dehydrate into alkenes, 2-toluenesulfonic acid can be used as a dehydrating agent to promote the dehydration of water in the alcohol molecule to form unsaturated alkenes. Furthermore, in the alkylation reaction of aromatics, 2-toluenesulfonic acid also has an effect. It can help alkylation reagents combine with aromatics to obtain alkylated aromatic hydrocarbon products, which is very important for the organic synthesis industry to produce special aromatic hydrocarbon compounds. In addition, in some drug synthesis, 2-toluenesulfonic acid can be used as an intermediate to participate in the construction of specific structures of drug molecules and to help form effective drug components. In the field of polymer polymerization, it can also be seen. It can catalyze certain polymerization reactions to form polymer monomers, which is helpful for the synthesis of polymer materials with specific properties. From this perspective, 2-toluenesulfonic acid has critical uses in various fields such as organic synthesis, chemical pharmaceuticals, and polymer synthesis, and is an important chemical reagent commonly used in chemical production and scientific research experiments.

What are the Physical Properties of Toluenesulfonic Acid?

2-Toluenesulfonic acid is an organic compound. Its physical properties are particularly important. The details are as follows: Looking at its properties, it often appears in a white needle-like or powder state at room temperature. This shape is easy to identify and is a significant appearance feature. As for the melting point, it is about 103-106 ° C. The melting point is established, and it is crucial to study the change of heat. At this temperature, the state of matter is transformed. The number of boiling points is about 140 ° C (2.67 kPa). The boiling point is the temperature at which it changes from liquid to gas at a specific pressure. This data reflects its volatility under different pressures. Solubility is also an important physical property. 2-Toluenesulfonic acid is highly soluble in water, which makes it well dispersed and reactive in aqueous systems. And it also has good solubility in alcohols and ether organic solvents, such as ethanol, ether, etc., which helps it to be widely used in the field of organic synthesis. Because it can be mixed and reacted with other substances in a variety of solvent environments. In addition, the substance is deliquescent. Placed in air, it is easy to absorb moisture and deliquescent. This characteristic requires that the environment be dry when storing to prevent deterioration. The above are all important physical properties of 2-toluenesulfonic acid, which are of great significance for application research in chemical, pharmaceutical and other fields.

2-Toluenesulfonic Acid What to pay attention to when storing

2-Toluenesulfonic acid, when storing, many matters need to be paid attention to. This is a strong acidic substance and is corrosive, so the storage place must be dry and well ventilated. Moisture can easily cause deliquescence, which in turn affects the quality. Good ventilation can prevent the accumulation of harmful gases and ensure the safety of the environment. Furthermore, storage temperature is also critical. It should be placed in a cool place, away from direct sunlight and heat sources. If the temperature is too high, it may cause chemical reactions or even cause danger. Generally speaking, 15 ° C to 25 ° C. In addition, the choice of container is crucial. Use corrosion-resistant materials, such as glass or containers made of specific plastic materials. Metal containers are highly susceptible to corrosion, causing the risk of leakage and endangering safety. At the same time, the storage place should be kept away from flammable, explosive and oxidizing substances. Because of such substances, or a violent reaction, causing serious accidents such as fire or explosion. And it is necessary to properly label, indicating the name, characteristics and hazards of the substance. This is easy to access and manage, and can also make contacts aware of latent risks and operate with caution. During storage, the container should also be regularly checked for leakage and deterioration. If there is any abnormality, it should be dealt with quickly. In this way, the safety and stability of 2-toluenesulfonic acid storage should be guaranteed.

What are the safety precautions for Toluenesulfonic Acid during use?

2-Toluenesulfonic acid is a commonly used reagent in organic synthesis. When using, many safety matters must be paid attention to. The first thing to pay attention to is its corrosiveness. This acid is highly corrosive and will cause burns when it touches the skin and eyes. Therefore, when using, protective equipment is indispensable. Protective clothing is required, and the material should be acid-resistant to prevent its damage; wear protective gloves, choose rubber or plastic material to ensure a tight fit and no leakage; wear protective glasses or masks to protect the eyes from acid splashing. Times and toxicity. Although not highly toxic, inhalation, ingestion or percutaneous absorption can still endanger health. Operate in a well-ventilated place. If conditions permit, it is advisable to use a fume hood to drain the volatile acid mist in time to avoid inhalation. If it accidentally touches the skin, rinse with a lot of water quickly, and the rinsing time should be long to remove the acid. If it enters the eyes, it is even more necessary to rinse immediately, and then seek medical treatment immediately. Furthermore, this acid is flammable. When using and storing, keep away from fire and heat sources to avoid contact with flammable materials. The storage environment should be cool, dry and ventilated, and it should be classified and stored according to regulations. It should not be mixed with alkalis, oxidants, etc. to prevent dangerous reactions. Also, during operation, the action should be steady and careful to prevent acid from pouring. If there is any spill, immediately cover it with suitable absorbent materials, such as sand, vermiculite, etc., and dispose of it properly after collection. Do not dump it at will to avoid polluting the environment. In short, the use of 2-toluenesulfonic acid must strictly follow safety procedures and operate with caution to ensure personal safety and environmental harmlessness.

What are the production methods of Toluenesulfonic Acid?

For 2-toluenesulfonic acid, there is an end to the method. One is to start with toluene, which is obtained by sulfonation. Toluenesulfonic acid is co-placed in the kettle to urge its reaction. In this case, the atom of the methyl position of toluene is replaced by the sulfonic acid group, and 2-toluenesulfonic acid is obtained. In its reverse, it is necessary to pay attention to the control of the degree. If the degree is high, it is feared that the side reaction will occur, and the degree of the carcinogen will be low. Furthermore, it can be started from toluenesulfonic acid. First, toluenesulfonic acid is reduced to its acid chloride, and the sulfuric acid is reduced to form a phase of sulfonic acid. The most acidification step is to obtain 2-toluenesulfonic acid. In this process, the various steps of the process are all well-grasped, and the chloroacetate needs to be in a dry environment to prevent its hydrolysis; sulfuric acid is reversed, the ratio of materials and the inversion, also affect the inversion rate. There are also those who use 2-methyl chlorobenzene as a raw material. To make it inverse sulfuric acid, the chlorine atom can be set by the sulfonic acid group to obtain 2-toluenesulfonic acid. In this reaction, the degree of sulfuric acid, the degree of inversion and the degree of inversion are all important factors. It is necessary to add the degree of inversion in order to make the inversion benefit and obtain a high rate. The above methods have their own advantages and disadvantages. They are all factors such as the availability of raw materials, the level of cost, and the ease of construction.