P-Chlorobenzenesulfonic Acid
Linshang Chemical
HS Code |
785382 |
Chemical Formula | C6H5ClO3S |
Molar Mass | 192.62 g/mol |
Appearance | White to off - white crystalline solid |
Solubility In Water | Soluble |
Melting Point | ~66 - 69 °C |
Boiling Point | Decomposes |
Density | 1.57 g/cm³ (approximate) |
Acidity | Strongly acidic |
Odor | Odorless or very faint odor |
Stability | Stable under normal conditions, but may react with strong bases and reducing agents |
As an accredited P-Chlorobenzenesulfonic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
Packing | 500g of P - chlorobenzenesulfonic Acid packaged in a sealed plastic bag. |
Storage | P - chlorobenzenesulfonic acid should be stored in a cool, dry, well - ventilated area, away from heat sources and open flames. Keep it in a tightly closed container to prevent moisture absorption. Store it separately from incompatible substances like strong oxidizers and bases to avoid potential reactions that could pose safety risks. |
Shipping | P - chlorobenzenesulfonic Acid is shipped in sealed, corrosion - resistant containers. Special care is taken to prevent leakage during transit as it's a chemical. Shipment adheres to strict safety regulations for hazardous substances. |
Competitive P-Chlorobenzenesulfonic Acid prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615365006308 or mail to info@alchemist-chem.com.
We will respond to you as soon as possible.
Tel: +8615365006308
Email: info@alchemist-chem.com


As a leading P-Chlorobenzenesulfonic Acid supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
This substance has a sulfonyl group, which has strong hydrophilicity, so P-chlorobenzenesulfonic acid is soluble in water. And because it contains chlorine atoms, this chlorine atom can participate in the substitution reaction under certain conditions. For example, under suitable reagents and reaction conditions, chlorine atoms can be replaced by other groups, thereby deriving a variety of organic compounds.
Furthermore, the presence of benzene rings endows P-chlorobenzenesulfonic acid with certain stability and conjugation effects. The conjugated system of the benzene ring makes the electron cloud distribution of the molecule more uniform, which affects its reactivity and chemical properties. P-chlorobenzenesulfonic acid can participate in typical reactions of aromatic compounds, such as electrophilic substitution reactions. Since the sulfonyl group is the meta-localization group and the chlorine atom is the o-localization group and the para-localization group, the two together affect the position of the electrophilic reagent to attack the benzene ring, and then dominate the main product of the reaction.
In addition, P-chlorobenzenesulfonic acid is very important in the field of organic synthesis and is often used as an intermediate for the preparation of a variety of drugs, dyes and other fine chemicals. By ingeniously designing the reaction path and taking advantage of its chemical properties, complex organic molecular structures can be constructed, providing an important
First, in the dye industry, this is a key intermediate. Through a series of chemical reactions, a variety of colorful and excellent performance dyes can be prepared. Because its structure contains specific functional groups, it can be cleverly combined with other compounds to build complex and specific color dye molecules to meet the needs of the printing and dyeing industry for various colors.
Second, in the field of medicine, P-chlorobenzenesulfonic acid also has its uses. It can be used as a starting material or an important intermediate for the synthesis of many drugs. Through chemical modification and reaction, drugs are endowed with specific pharmacological activity, which helps to develop new drugs for the treatment of various diseases and contributes to human health and well-being.
Third, it also plays an important role in the manufacture of pesticides. It can participate in the synthesis of a variety of high-efficiency and low-toxicity pesticides. With its unique chemical properties, it can enhance the lethality of pesticides to pests, or improve its prevention and control effect on crop diseases, ensuring the harvest of agriculture.
Fourth, in the preparation of surfactants, P-chlorobenzenesulfonic acid can be used as a raw material or auxiliary agent. The prepared surfactant is widely used in daily chemical, textile and other industries, which can improve the surface tension of liquids, enhance washing, emulsification, dispersion and other properties.
In conclusion, P-chlorobenzenesulfonic acid is indispensable in many aspects of industrial production and is of great significance to promoting the development of various related industries.
When heating, the temperature needs to be controlled to a suitable range, about 150-200 ° C. Under this temperature condition, sulfur trioxide in fuming sulfuric acid undergoes electrophilic substitution reaction with chlorobenzene. On the benzene ring of chlorobenzene, the electron cloud density distribution varies due to the influence of chlorine atoms. Chlorine atoms are ortho and para-sites, so the sulfonation reaction mainly
Sulfur trioxide acts as an electrophilic reagent to attack the counterposition of the higher electron cloud density of the benzene ring and form a sigma-complex intermediate. This intermediate is unstable, and then loses a proton to form P-chlorobenzenesulfonic acid. After the reaction is completed, the reaction product is separated and purified after the system cools. The physical and chemical properties of P-chlorobenzenesulfonic acid, such as the difference in solubility in different solvents, can be purified by recrystallization to obtain a pure P-chlorobenzenesulfonic acid product.
When storing, the first priority is to choose a cool and dry place. This is because of its fear of heat and dampness. If it is in a warm and humid place, or its properties change, it will affect the quality. In the warehouse, the temperature should be kept at a low level, and the humidity should be strictly controlled to avoid the risk of moisture hydrolysis. And it must be kept away from oxidants, alkalis and other substances. If these substances encounter it, or react violently, it will cause harm.
Furthermore, the place of storage should be well ventilated. Good ventilation can remove the accumulated heat and moisture, and can also prevent the accumulation of harmful gases. P-chlorobenzenesulfonic acid may evaporate gas during storage. If the ventilation is not good, there will be a lot of gas accumulation, which is not only harmful to the human body, but also increases the risk of fire and explosion.
As for transportation, the packaging must be solid and reliable. Choose appropriate packaging materials to ensure that p-chlorobenzenesulfonic acid does not leak during bumpy handling. The containers used must be able to withstand its corrosion and have good sealing.
During transportation, the driving should also be stable. Violent actions such as sudden braking and sharp turning may cause damage to the packaging and material leakage. And the route planning is also heavy, and densely populated and complicated traffic should be avoided. In case of leakage, the damage can be reduced.
And transport vehicles, when prepared for emergency disposal. Such as adsorbing materials to collect leaking fluids; protective equipment for disposal personnel to ensure their safety. In this way, when storing and transporting p-chlorobenzenesulfonic acid, do everything to be safe.
p-chlorobenzenesulfonic acid has many effects on both the environment and the human body. At the end of the environment, if it enters the natural water body, it can cause water quality variation. Because it has certain chemical activity or combines with various components in the water, the chemical properties of the water body are changed, and aquatic organisms depend on water for life, and changes in water interfere with their survival and reproduction. Algae may grow or proliferate due to changes in the chemical environment of the water body, resulting in ecological imbalance. And it is also harmful to the soil. If it penetrates into the soil, or changes the pH and chemical composition of the soil, the soil fertility will be reduced, and the plant roots will be blocked in this abnormal soil environment, which will affect the stability of the entire terrestrial ecosystem.
As for the human body, p-chlorobenzenesulfonic acid is irritating. If the skin touches it, it can cause redness, itching, blisters, and ulceration in the lightest case. Its volatile gas enters the respiratory tract, can irritate the throat and trachea, make people cough, asthma, and even cause respiratory diseases such as bronchitis and asthma. If it does not enter the eyes carefully, it will cause great damage to the eyes, causing eye pain, tears, and in severe cases, vision loss. In addition, if this substance is ingested orally, it can also damage the digestive system, causing stomach pain, vomiting, diarrhea, etc. If ingested in small amounts for a long time, it may accumulate in the body, damaging the functions of organs such as liver and kidney, and endangering human health.

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