4-Chlorobenzenesulfonic Acid Potassium Salt
Linshang Chemical
HS Code |
262690 |
Chemical Formula | C6H4ClKO3S |
Molecular Weight | 228.71 |
Appearance | white to off - white powder |
Solubility In Water | soluble |
Odor | odorless |
Ph Aqueous Solution | neutral to slightly alkaline |
Melting Point | decomposes |
Stability | stable under normal conditions |
Hazard Class | non - hazardous for normal handling |
As an accredited 4-Chlorobenzenesulfonic Acid Potassium Salt factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
Packing | 250g of 4 - chlorobenzenesulfonic Acid Potassium Salt packaged in a resealable plastic bag. |
Storage | 4 - Chlorobenzenesulfonic Acid Potassium Salt should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources, flames, and incompatible substances such as strong oxidizing agents. Store in a tightly - sealed container to prevent moisture absorption and contamination, ensuring its stability and preventing potential chemical reactions. |
Shipping | 4 - Chlorobenzenesulfonic Acid Potassium Salt is shipped in well - sealed containers, following strict hazardous chemical regulations. Packaging ensures protection from moisture and physical damage during transit to prevent any spills or leaks. |
Competitive 4-Chlorobenzenesulfonic Acid Potassium Salt 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.
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Tel: +8615365006308
Email: info@alchemist-chem.com


As a leading 4-Chlorobenzenesulfonic Acid Potassium Salt supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
In the dye industry, its role cannot be ignored. It can be used as an intermediate to participate in dye synthesis. With the help of its chemical structure characteristics, it endows the dye with excellent properties, such as improving the color fastness of the dye and improving the uniformity of dyeing, so that the dye can show better results in the fabric dyeing process and meet the needs of the textile industry for high-
In the field of surfactant preparation, potassium 4-chlorobenzenesulfonate is also useful. It can use its special structure to synthesize surfactants with excellent performance through a series of chemical reactions, and enhance the functions of surfactant emulsification, dispersion, solubilization, etc. It is widely used in the production of detergents, cosmetics and other products to improve product quality and performance.
In addition, in pharmaceutical chemistry research, it can be used as a starting material or reaction intermediate to help develop new drugs. Through its structural modification and reaction derivatization, explore compounds with potential biological activities, provide new directions and possibilities for drug creation, and contribute to the development of human health. In short, potassium 4-chlorobenzenesulfonate plays an indispensable role in many important fields.
Looking at its properties, under room temperature, it often shows a white to light yellow crystalline powder state. This morphology is easy to be recognized by the naked eye, and it is also easy to observe and identify in practical applications.
When it comes to solubility, this substance is soluble in water. In water, it can be dispersed more uniformly to form a corresponding solution. This property allows it to participate better in chemical reactions or industrial processes involving the aqueous phase. For example, in some subsequent treatment steps of sulfonation reactions that need to be carried out in an aqueous solution environment, it can be separated or further reacted with other substances more conveniently by virtue of its good water solubility.
Furthermore, the melting point is also an important physical property. Its melting point is in a specific temperature range, and this value has a key impact on its state under different temperature conditions. When the temperature is lower than the melting point, it exists stably in the solid state with a relatively regular structure; once the temperature rises to the melting point and above, it will gradually melt into a liquid state, and the intermolecular force changes and the fluidity is enhanced. In industrial production, melting point data is of great significance for controlling the reaction temperature, material processing, and product forming. For example, in the crystallization process, it is necessary to precisely control the temperature so that it is close to the melting point, so as to promote the precipitation of potassium 4-chlorobenzenesulfonate in the ideal crystalline form, thereby improving product quality. The physical properties of potassium 4-chlorobenzenesulfonate play an important role in many fields such as chemical engineering and pharmaceuticals. In-depth understanding of these properties will help to use this compound more scientifically and efficiently.
In this compound, potassium ions and 4-chlorobenzenesulfonate ions are connected by ionic bonds. Due to the sulfonic acid group, it can be moderately dissociated in water, showing certain ionic characteristics.
When it comes to chemical activity, the chlorine atom in potassium 4-chlorobenzenesulfonate can participate in specific substitution reactions due to the influence of benzene ring and sulfonic acid group. Under appropriate conditions, the chlorine atom can be replaced by other nucleophiles, and then new compounds with different structures can be derived.
Furthermore, its sulfonic acid group is also reactive. The sulfonic acid group is a strongly acidic group. Although the acidity is weakened after the formation of potassium salts, it can still participate in some acid-base related reactions. In case of stronger acid, potassium ions may be replaced to regenerate 4-chlorobenzenesulfonic acid.
In the field of organic synthesis, potassium 4-chlorobenzenesulfonic acid is often used as an important intermediate. By controlling the reaction of its chlorine atom and sulfonic acid group, it can prepare a variety of organic compounds such as drugs, dyes and functional materials, which occupy an indispensable position in the chemical industry.
The first step is to prepare 4-chlorobenzenesulfonic acid. The chlorobenzene and fuming sulfuric acid are injected into the reaction kettle in a certain proportion. The kettle should be made of glass or glass-lined material to prevent corrosion. The temperature control is within a certain range, usually between 120 and 140 degrees Celsius. This temperature needs to be maintained by an accurate thermometer and temperature control device. During the reaction, the strong sulfonation property of fuming sulfuric acid causes chlorobenzene to undergo a sulfonation reaction, which lasts about 3-5 hours. After the reaction is completed, the crude product of 4-chlorobenzenesulfonic acid is obtained.
Next, the crude 4-chlorobenzenesulfonic acid is cooled to room temperature, slowly poured into an appropriate amount of water, stirred to dissolve, and then adsorbed and decolorized by activated carbon to remove impurities. After filtering under reduced pressure, a clarified 4-chlorobenzenesulfonic acid solution is obtained.
Then, prepare 4-chlorobenzenesulfonic acid potassium salt. In the above 4-chlorobenzenesulfonic acid solution, add potassium hydroxide solution dropwise, and stir while adding until the pH of the solution reaches 7-8, at which time the solution is neutral. Potassium hydroxide and 4-chlorobenzenesulfonic acid neutralize to form 4-chlorobenzenesulfonic acid potassium salt. After the
reaction is completed, the reaction solution is evaporated and concentrated, so that the water is gradually lost, and when a large number of crystals are precipitated, the heating is stopped. While hot, the concentrated solution is moved to the Brinell funnel and filtered under reduced pressure to separate the crystals from the mother liquor. The obtained crystals are washed several times with an appropriate amount of anhydrous ethanol to remove impurities and mother liquor remaining on the surface. Finally, the crystals are placed in an oven and dried at a temperature of 60-80 ° C to obtain a pure 4-chlorobenzenesulfonic acid potassium salt.
Its properties are relatively stable, and it may encounter hot topics or cause decomposition and release harmful gases. Therefore, when storing, it should be placed in a cool and ventilated warehouse, away from fire and heat sources, to prevent it from decomposing due to excessive temperature. The temperature of the warehouse should not exceed 30 ° C, and the relative humidity should be controlled below 80%.
4-Potassium chlorobenzenesulfonate has certain hygroscopicity, and its quality may be affected after moisture. Therefore, it should be ensured that the storage place is dry, and the packaging must be sealed to prevent moisture absorption. If the packaging is damaged, it should be replaced in time to avoid the product coming into contact with moisture.
During transportation, it is also necessary to avoid rain and moisture. Transportation vehicles should be equipped with rainproof facilities. Check whether the packaging is in good condition before loading. If there is any damage and leakage, it must be properly handled before transportation.
In addition, although potassium 4-chlorobenzenesulfonate is not extremely toxic, it should not be mixed with food, beverages, feed, etc., to avoid contamination. When handling, it should be handled lightly, so as not to damage the packaging and cause material leakage. Operators need to wear appropriate protective equipment, such as protective gloves, glasses, etc., to prevent contact with skin and eyes.
In short, whether storing or transporting potassium 4-chlorobenzenesulfonate, it is necessary to operate in strict accordance with regulations to ensure personnel safety and product quality.

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