P-toluene Sulfonic Acid

Lingxian Chemical

Specifications

HS Code	215927
Name	p - toluene Sulfonic Acid
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	white crystalline solid
Odor	odorless
Solubility In Water	highly soluble
Pka Value	about -2.8
Melting Point	103 - 105 °C
Boiling Point	140 °C (2.67 kPa)
Density	1.24 g/cm³
Acidity	strong organic acid
Usage	used in esterification, dehydration reactions
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	White crystalline solid
Odor	Odorless
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in many organic solvents like ethanol, acetone
Acidity	Strongly acidic
Melting Point	103 - 105 °C
Boiling Point	Decomposes before boiling
Density	1.24 g/cm³
Pka Value	~ -2.8
Name	p - toluene Sulfonic Acid
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	Colorless to white solid
Odor	Typical of sulfonic acids
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in some organic solvents
Acidity	Strong acid
Melting Point	103 - 105 °C
Boiling Point	Decomposes before boiling
Density	1.24 g/cm³ (approx.)
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	white to yellow - brown crystalline solid
Odor	pungent
Solubility In Water	soluble
Solubility In Organic Solvents	soluble in ethanol, acetone
Acidic Strength	strong organic acid
Melting Point	103 - 105 °C
Boiling Point	140 °C (2.67 kPa)
Ph	acidic in aqueous solution
Stability	stable under normal conditions, but may decompose on heating
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	White crystalline solid
Odor	Odorless
Solubility In Water	Soluble
Melting Point	103 - 105 °C
Boiling Point	Decomposes
Density	1.24 g/cm³
Acidity	Strongly acidic
Pka	~ -2.8
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	White crystalline solid
Odor	Typical sulfonic acid odor
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in many organic solvents like ethanol
Acidity	Strong acid
Melting Point	103 - 105 °C
Boiling Point	Decomposes before boiling
Density	1.24 g/cm³
Pka Value	-2.8
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	white to yellowish crystalline solid
Odor	pungent
Solubility In Water	soluble
Solubility In Organic Solvents	soluble in ethanol, acetone, etc.
Melting Point	103 - 105 °C
Boiling Point	140 °C (2.67 kPa)
Acidity	strongly acidic
Pka	−2.8
Density	1.24 g/cm³
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	White to yellowish crystalline solid
Odor	Odorless
Solubility In Water	Soluble
Melting Point	103 - 105 °C
Boiling Point	140 °C (2.67 kPa)
Density	1.24 g/cm³
Acidity Pka	约 -2.8
Purity Typical Commercial Grade	98% or higher
Name	p - toluene Sulfonic Acid
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	Colorless to white solid
Odor	Odorless
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in many organic solvents
Acidic Nature	Strong organic acid
Melting Point	103 - 105 °C
Boiling Point	Decomposes before boiling
Stability	Stable under normal conditions
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	white to yellowish crystalline solid
Odor	characteristic, pungent
Solubility In Water	soluble
Solubility In Organic Solvents	soluble in many organic solvents like ethanol, acetone
Melting Point	103 - 105 °C
Boiling Point	decomposes
Acidity	strong organic acid
Ph In Solution	acidic (low pH values depending on concentration)
Name	p - toluene Sulfonic Acid
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	white crystalline solid
Odor	characteristic, pungent
Solubility In Water	highly soluble
Melting Point	103 - 105 °C
Boiling Point	decomposes
Acidity	strong acid
Density	1.24 g/cm³ (approx.)
Flash Point	non - flammable
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	White to pale yellow crystals
Odor	Typical sulfonic acid odor
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in many organic solvents like ethanol, acetone
Melting Point	103 - 105 °C
Boiling Point	Decomposes before boiling
Acidity	Strong acid
Pka	-2.8
Stability	Stable under normal conditions, but may react with strong oxidizing agents
Name	p - toluene Sulfonic Acid
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	white to yellow - brown solid
Odor	pungent
Solubility In Water	soluble
Solubility In Organic Solvents	soluble in some organic solvents like ethanol
Acidity	strong acid
Melting Point	103 - 105 °C
Boiling Point	decomposes before boiling
Density	1.24 g/cm³ (approximate)
Name	p - toluene Sulfonic Acid
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	Colorless to white crystalline solid
Odor	Typical sulfonic acid odor
Solubility In Water	Soluble
Melting Point	103 - 105 °C
Boiling Point	Decomposes
Acidity	Strongly acidic
Pka	-2.8
Density	1.24 g/cm³ (at 20 °C)
Name	p - toluene Sulfonic Acid
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	white crystalline solid
Odor	pungent
Solubility In Water	soluble
Melting Point	103 - 105 °C
Boiling Point	140 °C (2.67 kPa)
Acidity	strong acid
Pka	-2.8
Flash Point	57.2 °C
Density	1.24 g/cm³ (monohydrate)
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	white crystalline solid
Odor	odorless
Solubility In Water	soluble
Solubility In Organic Solvents	soluble in ethanol, acetone, etc.
Melting Point	103 - 105 °C
Boiling Point	140 °C (2.67 kPa)
Acidity	strongly acidic
Pka	-2.8
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	white to off - white crystalline solid
Odor	characteristic pungent odor
Solubility In Water	soluble
Solubility In Organic Solvents	soluble in many organic solvents like ethanol, acetone
Acidic Nature	strongly acidic
Pka Value	~ -2.8
Melting Point	103 - 105 °C
Boiling Point	140 °C (at 20 mmHg)
Chemical Formula	C7H8O3S
Molar Mass	172.202 g/mol
Appearance	Colorless to white solid
Odor	Typically has a faint, characteristic odor
Solubility In Water	Soluble
Solubility In Organic Solvents	Soluble in many organic solvents like ethanol, acetone
Acidity	Strongly acidic
Melting Point	103 - 105 °C
Boiling Point	Decomposes before boiling
Density	1.24 g/cm³
Ph Aqueous Solution	Low pH (acidic solution)

Packing & Storage

Packing	25 - kg bags for packaging P - toluene Sulfonic Acid.
Storage	P - toluene Sulfonic Acid should be stored in a cool, dry, well - ventilated area. Keep it away from sources of heat, ignition, and incompatible substances like strong oxidizers and bases. Store in tightly - sealed containers to prevent moisture absorption, which could affect its quality. Label storage areas clearly to ensure proper handling and safety.
Shipping	P - toluene Sulfonic Acid is shipped in tightly - sealed, corrosion - resistant containers. Special care is taken to prevent spills during transit, adhering to strict chemical transportation regulations to ensure safety.

Free Quote

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General Information

Frequently Asked Questions

What is the chemical structure of P-toluene Sulfonic Acid?

P-toluene Sulfonic Acid, that is, p-toluene sulfonic acid, is characterized by its chemical properties. This substance is a chemical compound, and its basic framework is composed of a benzene core. On benzene, the position of the phase of the methyl ($- CH_3 $) sulfonic acid ($- SO_3H $) is the position, that is, the position, so it is called toluenesulfonic acid.
Benzene is the basic element of aromatic acid, with a planar hexadecimeter, six carbon atoms in a total of large $\ pi $phase, which gives benzene special characterization. Methyl is used in benzene, and the density of the benzene sub-cloud can be increased due to the effect of the methyl group. The sulfonic acid group is the absorber group, in which the sulfur atom is the phase of the oxygen atom, and the phase of the sulfur atom is the phase of the oxygen atom. The properties of sulfonic acid groups make toluenesulfonic acid acidic.
As a whole, the chemical properties of toluenesulfonic acid are determined by the interaction of benzene, methyl and sulfonic acid groups. It has developed important uses such as catalysis in many synthetic reactions. Its characteristics are also fundamental for research and engineering.

What are the main uses of P-toluene Sulfonic Acid?

P-toluene sulfonic acid (P-toluene Sulfonic Acid) is an important reagent in organic synthesis and has a wide range of uses.
First, it is often used as a catalyst in esterification reactions. The methods of preparing esters by the ancient people were many and complicated. However, using P-toluene sulfonic acid as a catalyst can make the reaction between carboxylic acids and alcohols more smooth. For example, when preparing ethyl acetate, many steps and harsh conditions were required in the past. Today, this acid is used as a catalyst to accelerate the reaction rate and increase the yield. This is because it can effectively reduce the activation energy of the reaction, making it easier for the reactant molecules to achieve the energy state required for the reaction, as if paving a smoother way for the reaction.
Second, it also plays a key role in alkylation reactions. Alkylation reactions aim to introduce alkyl groups into organic compound molecules. P-toluenesulfonic acid can help alkylation reagents bind to substrate molecules. For example, in the alkylation process of aromatics, this acid can prompt aromatics to react with alkylation reagents such as haloalkanes or alkenes, and introduce alkyl groups at specific positions of aromatics. This is of great significance in the synthesis of organic compounds with specific structures, and can precisely regulate the structure and properties of compounds.
Third, in some dehydration reactions, P-toluenesulfonic acid can play the role of a dehydrating agent. Such as the reaction of alcohol dehydration to form olefins, this acid can prompt the alcohol molecule to remove a molecule of water and form a carbon-carbon double bond. Just like ingeniously guiding the alcohol molecule to lose excess "water" and transform it into a more unsaturated olefin structure. Its mechanism of action is to rely on its own acidity to promote the protonation of alcohol hydroxyl groups, which is easier to leave and cause dehydration reactions.
Fourth, it is also used in the field of polymer synthesis. In some polycondensation reactions, it can accelerate the reaction process and promote the mutual condensation of monomers to form polymers. For example, in the synthesis of polyesters, P-toluenesulfonic acid can promote the smooth progress of the polycondensation reaction between diols and diacids, which helps to control the molecular weight and structure of polymers and provides assistance for the preparation of polymer materials with excellent performance.

What should be paid attention to when storing P-toluene Sulfonic Acid

P-toluenesulfonic acid is an organic compound. When storing, many matters must be paid attention to.
The choice of the first environment. This substance should be stored in a cool, dry and well-ventilated place. The cover is more sensitive to heat. If it is in a high temperature environment, it may cause adverse reactions such as decomposition, damage its quality, or even cause danger. For example, if the storage temperature is not controlled during hot weather, it may deteriorate.
The second is the solids of the package. It must be stored in a well-sealed container to prevent excessive contact with air. It has a certain degree of hygroscopicity, and when exposed to the air, it is easy to absorb water vapor, causing concentration changes and affecting the use efficiency. If stored in an open area, it will soon be deliquescent.
In addition, avoid mixing. Do not store with oxidants, alkalis and other substances. Because it is an acidic substance, when it encounters alkalis, it will neutralize; mix with oxidants, or cause violent chemical reactions, endangering safety. If water and fire are incompatible, the two are in the same place, and disasters are prone to occur.
In addition, the storage place should be away from fire and heat sources. Because of its flammability, in case of open flames and hot topics, there is a risk of combustion and explosion. Fireworks are strictly prohibited in the storage place, and electrical equipment must also be explosion-proof to prevent danger from accidental fire sources.
And the logo must be clear. On the container, when the product name, specification, date and other information are clearly marked for management and access, it can also help to trace quality problems. If the logo is unclear, it may cause confusion when taking it, and it may be misused in improper places.
In short, when P-toluenesulfonic acid is stored, the environment, packaging, mixed storage, fire source and logo, etc., all need to be carefully treated, so that the security is safe and the quality is not damaged.

What are the safety precautions during the use of P-toluene Sulfonic Acid?

P-toluenesulfonic acid is a commonly used reagent in organic synthesis. During its use, safety must not be ignored.
First protective gear. When using this acid, you must wear appropriate protective clothing, so as to prevent its corrosion and avoid hurting the skin. And when wearing chemical-resistant gloves to protect your hands; you need to wear anti-goggles to prevent acid from splashing into your eyes and causing damage to your eyes.
Next, the operating environment. When used in a well-ventilated place, this can allow volatile acid to dissipate in time, so as not to cause excessive indoor concentration and damage the respiratory system. If conditions permit, it is suitable to operate in a fume hood, which is safer.
Furthermore, when taking it, the action should be slow and careful. Because of its strong corrosiveness, if it is poured on the table or the ground, quickly rinse with a large amount of water, and then neutralize with an appropriate alkaline substance, such as sodium bicarbonate.
Also, when storing, it must be sealed and stored in a cool, dry place, away from fire and heat sources, and should not be stored with flammable, combustible and alkali to prevent dangerous reactions.
If you accidentally come into contact with this acid, rinse it with a large amount of water on the skin immediately, and then seek medical treatment; if it enters the eye, rinse it with flowing water or normal saline immediately, and seek medical attention urgently.
In short, with P-toluenesulfonic acid, be cautious and pay attention to safety in order to avoid disasters and ensure safety.

What are the Preparation Methods of P-toluene Sulfonic Acid

The method of making p-toluenesulfonic acid has existed in ancient times. First, starting with toluene and co-heating with concentrated sulfuric acid, this acid can be formed. This is the method of sulfonation. Put toluene in the kettle, slowly inject concentrated sulfuric acid, and heat it at a controlled temperature. The methyl o-para-position of toluene is easily replaced by a sulfonic acid group, so p-toluenesulfonic acid is obtained. However, there are also by-products, o-toluenesulfonic acid may also be generated, and the matter of separation should not be ignored.
There are also toluene and chlorosulfonic acid as materials. Chlorosulfonic acid has strong activity and reacts quickly when it encounters toluene. At a suitable temperature, chlorosulfonic acid is dropped into toluene, and the sulfonation is rapid. The yield of this route is quite high, and the purity of p-toluen However, chlorosulfonic acid is highly corrosive, during operation, protective measures must be prepared in detail to prevent it from hurting people and erosion.
It is also made by hydrolysis of p-toluenesulfonyl chloride. First, toluene is chlorinated to obtain p-toluenesulfonyl chloride, and then hydrolyzed with water or alkali. During hydrolysis, the acid chloride group of p-toluenesulfonyl chloride is changed into a sulfonic acid group to obtain p-toluenesulfonic acid. Although this step is slightly complicated, it is also a good method if the raw materials are available and the purity of the product is required. In short, all kinds of production methods have advantages and disadvantages, and it is necessary to choose according to the situation, and weigh the raw materials, yield, and purity to obtain appropriate measures to produce p-toluenesulfonic acid.