P-Mercaptochlorobenzene
Linshang Chemical
HS Code |
329089 |
Chemical Formula | C6H4ClSH |
Molar Mass | 144.61 g/mol |
Appearance | Liquid |
Odor | Pungent sulfur - like odor |
Boiling Point | 204 - 205 °C |
Density | 1.24 g/cm³ (approximate) |
Solubility In Water | Insoluble |
Solubility In Organic Solvents | Soluble in many organic solvents like ethanol, ether |
Flash Point | 87 °C (approximate) |
Stability | Stable under normal conditions but may react with strong oxidizing agents |
As an accredited P-Mercaptochlorobenzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
Packing | 100g of P - mercaptochlorobenzene packaged in a sealed, corrosion - resistant bottle. |
Storage | P - mercaptochlorobenzene should be stored in a cool, well - ventilated area, away from heat and ignition sources. Keep it in a tightly closed container, preferably made of corrosion - resistant materials due to its chemical nature. Store it separately from oxidizing agents and incompatible substances to prevent reactions. Ensure proper labeling for easy identification and safety. |
Shipping | P - mercaptochlorobenzene should be shipped in accordance with hazardous chemical regulations. Use well - sealed, corrosion - resistant containers. Label clearly and ensure proper handling during transportation to prevent spills and ensure safety. |
Competitive P-Mercaptochlorobenzene 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 P-Mercaptochlorobenzene supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
In terms of its melting point, the melting point is very low, about several degrees below zero, causing it to be liquid at room temperature. The boiling point is relatively high, and it needs to reach hundreds of degrees before it can boil, due to intermolecular forces.
In terms of density, it is slightly larger than water. If mixed with water, it will sink underwater. Solubility also has characteristics, and it is extremely difficult to dissolve in water, because its molecular polarity is different from that of water. However, in organic solvents such as ethanol and ether, it is easily soluble, and its polarity is similar to that of organic solvents, which is similar to the principle of compatibility.
In terms of volatility, it has a certain degree of volatility, and it can evaporate slowly in the air, causing the surrounding air to contain its odor. And its vapor is heavier than air and accumulates in low places.
The physical properties of this substance are important in chemical, pharmaceutical and other fields, related to its preparation, storage and application.
In this substance, the chlorine atom and the sulfhydryl group coexist in a benzene ring, each of which shows its own characteristics and affects each other. Chlorine atoms are electron-absorbing, causing the electron cloud density of the benzene ring to change, while sulfhydryl groups can be acidic, and can neutralize with bases to produce corresponding salts.
In terms of reactivity, due to the localization effect of chlorine and sulfhydryl groups, the electrophilic substitution reaction has its specific orientation. Chlorine is an ortho and para-localization group, and thiol groups also have similar effects, so the reaction mostly occurs in the ortho and para-position of the benzene ring
In nucleophilic substitution reactions, chlorine atoms can be replaced by nucleophilic reagents, subject to suitable conditions, such as alkaline environment and appropriate temperature. Mercapto groups can participate in redox reactions and are easily oxidized to disulfide bonds. This property is crucial in some biochemical processes and organic synthesis.
Furthermore, the physical properties of mercapto-chlorobenzene are also considerable. Its solubility is affected by chlorine and sulfhydryl groups, and it has good solubility in organic solvents, while it is slightly worse in water. The melting point and boiling point depend on intermolecular forces, and intermolecular hydrogen bonds and van der Waals forces co-shape its physical properties. In conclusion, mercaptochlorobenzene has important application value in the fields of medicine, pesticides, materials, etc. due to its unique chemical properties, and is important for chemical research and industrial production.
First safety protection. Mercaptochlorobenzene has certain toxicity and irritation, or invades the human body through the respiratory tract, skin and other channels, harming health. During operation, be sure to strictly select suitable protective equipment, such as gas masks, protective gloves, goggles, etc., to prevent direct contact with it. And the workplace should be well ventilated to reduce the concentration of harmful substances in the air.
The second is to precisely control the reaction conditions. The reaction of synthetic mercaptochlorobenzene often requires strict conditions such as temperature, pressure, reactant ratio, reaction time, etc. If the temperature is too high, it may cause an increase in side reactions and a decrease in yield; if the temperature is too low, the reaction rate will be slow and time-consuming. Therefore, it is necessary to borrow precise temperature control, pressure control and other equipment to strictly control the reaction conditions to ensure that the reaction proceeds efficiently in the expected direction.
Furthermore, the storage of raw materials and products should not be underestimated. Due to its active nature, it can be exposed to light, heat, oxidants, etc. or deteriorated, which affects the quality and use effect. It should be stored in a cool, dry and ventilated place, away from fire and heat sources, and stored separately from oxidants and acids. Do not mix storage. The storage area must be equipped with suitable materials to contain leaks.
Repeat, pay attention to environmental protection issues. Waste water, waste gas, waste residue and other pollutants containing thiol chlorobenzene and its intermediates and by-products may be generated during the production process. It must be properly treated and discharged after reaching the standard to prevent environmental pollution. Wastewater can be treated by chemical precipitation, adsorption, biodegradation and other methods; waste gas can be purified by absorption, adsorption, catalytic combustion and other processes; waste residue should be properly disposed of or comprehensively utilized in accordance with relevant regulations.
Finally, strengthen equipment maintenance and management. Production equipment needs to be regularly inspected, maintained and calibrated to ensure its normal operation and avoid safety accidents such as leakage due to equipment failure and runaway reaction. Inspection of key equipment such as transportation pipelines, reaction kettles, and storage containers should be strengthened to promptly investigate and eliminate potential safety hazards.
First, the market supply and demand shape its price. If demand is strong and supply is scarce, its price will rise; conversely, if supply exceeds demand, the price will decline. And the chemical industry's demand for p-mercaptochlorobenzene may vary depending on product production scale and research and development progress.
Second, the cost of raw materials has a significant impact.
Third, policies and regulations and environmental protection requirements also have an impact. Stringent environmental protection policies may lead to production restrictions and cost increases, which will drive up prices.
Fourth, the global economic situation and trade policies should not be underestimated. Economic prosperity, demand may increase; trade friction may affect import and export, affecting prices.
According to past market conditions and general market rules, the price of p-mercaptochlorobenzene may fluctuate between tens of yuan and hundreds of yuan per kilogram. However, this is only a rough guess, and the actual price depends on the specific time point, quality, transaction scale and market situation. To obtain accurate prices, it is recommended to consult chemical product suppliers, traders or relevant market information platforms for real-time and accurate quotations.
The primary use is as a raw material for pharmaceutical synthesis. In the creation of drugs, this compound can act as a key intermediate. For example, some drugs with special curative effects, the synthesis path depends on the participation of mercaptochlorobenzene in the reaction to construct a specific chemical structure and give the drug unique pharmacological activity.
Furthermore, in the industry of dye preparation, it also has its uses. After a specific chemical reaction, mercaptochlorobenzene can be converted into the basic component of dye synthesis, helping dyes to have bright color and good fastness, so as to meet the needs of textile, printing and dyeing industries.
In chemical synthesis, it is often used as a building block for organic synthesis. With its unique chemical properties, it reacts with various reagents to build a complex organic molecular structure, paving the way for the synthesis of new materials and fine chemicals.
In addition, when studying chemical mechanisms and exploring new reaction paths, mercaptochlorobenzene is also a commonly used reagent. Scientists use it to participate in reactions, gain insight into reaction processes, reveal chemical laws, and contribute to the development of chemistry. In short, mercaptochlorobenzene is of great value in chemical industry, medicine, scientific research, and other fields, promoting progress and development in various fields.
p-mercaptochlorobenzene is a liquid at room temperature, and its appearance can be seen as water, clear and transparent. Its color is often colorless to slightly yellow, and its appearance is pure without impurities.
As for its odor, it has a special odor and pungent smell. This smell is specific and easy to identify. Its boiling point is about 245 ° C. At this temperature, the liquid boils and converts into a gaseous state. The melting point is around -15 ° C. When the temperature drops below the melting point, it gradually changes from liquid to solid state.
The density of p-mercaptochlorobenzene is slightly higher than that of water. If it is mixed with water, its liquid will sink in water. And it is insoluble in water, but in organic solvents, such as ethanol, ether, benzene, etc., it has good solubility and can be miscible with various organic solvents.
In addition, p-mercaptochlorobenzene contains thiol and chlorine atoms, and its chemical properties are active. It can participate in a variety of chemical reactions, such as substitution reactions, oxidation reactions, etc. It is widely used in the field of organic synthesis.
From the perspective of reactivity, the thiol group can participate in many reactions. Its hydrogen atom is more active and easy to be replaced, and can react with electrophilic reagents. And the sulfur atom has lone pairs of electrons, which can act as a nucleophilic reagent and interact with electrophilic substrates.
However, the conjugate system of the benzene ring has the work of stabilizing The conjugated large π bond of the benzene ring decreases the molecular energy and stabilizes the structure. Although the chlorine atom of P-mercapto-chlorobenzene has an electron-absorbing induction effect, the conjugation effect of the benzene ring can be buffered to a certain extent, so that the overall structure is not too active.
However, when encountering strong oxidants or specific reaction conditions, the sulfhydryl group is easily oxidized, or the chlorine atom is replaced, and the stability of its chemical properties is challenged at this time. In short, the chemical properties of P-mercapto-chlorobenzene have a certain stability, but under specific conditions, it can also exhibit active reactivity. Its stability and instability cannot be generalized. It must be judged according to the specific situation and reaction conditions.
In the past, the production of this substance often began with chlorobenzene. In the case of chlorobenzene, benzene is mixed with chlorine gas, and iron filings are added as a catalyst. After substitution, chlorobenzene is obtained. Later, if you want to introduce sulfhydryl groups into it, mostly sodium hydrosulfide and other substances are reacted together with chlorobenzene. In the kettle, it is also necessary to control its temperature, check its pressure, and the length of time. When sodium hydrosulfide meets chlorobenzene, the chlorine atom is replaced by a sulfhydryl group, and it becomes P-mercapto chlorobenzene. However, in this ancient method, its yield may not be high, and by-products also need to be treated well.
< br There is a method of phase transfer catalysis to add a phase transfer catalyst to the reaction system. This can promote the transfer of two-phase substances, making the reaction faster and the yield increase. It is also guided by the concept of green chemistry to choose better raw materials and conditions, reduce waste generation, and increase the economy of atoms. And the precision of the instrument, the accuracy of temperature control and pressure measurement all contribute to the excellence of the process, making the production of P-mercapto-chlorobenzene more suitable for the time, efficient and clean.
First words storage. Its nature may be unstable, and it is afraid of light and heat, so it should be stored in a cool, ventilated and dry place, away from direct sunlight, so as not to cause deterioration or cause danger. The warehouse temperature should be controlled within a specific range to prevent it from volatilizing or chemical reactions due to excessive temperature. In addition, it must be stored in isolation from oxidants, acids, alkalis, etc., because it may react violently with them, which may pose a safety hazard. And the storage place should be prepared with suitable materials for containing leaks. If there is any leakage, it can be disposed of in time.
As for transportation, there are also many details. Before transportation, make sure that the packaging is complete and well sealed to prevent its leakage. When transporting, choose a transportation tool that is in compliance with the relevant laws and regulations on chemical transportation. During transportation, it is necessary to prevent exposure to sunlight, rain and high temperature. Drivers and escorts should be familiar with its characteristics and emergency response methods, and check the condition of the goods frequently on the way. If there is any abnormality, take measures quickly. Load and unload lightly to avoid leakage caused by damage to the container.
In general, the storage and transportation of thiol chlorobenzene should strictly abide by safety regulations and take comprehensive protection to ensure the safety of personnel and the environment from pollution.

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