Meisheng Chemical
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N-Octadecyltrimethoxysilane

Meisheng Chemical

    Specifications

    HS Code

    487211

    Chemical Formula C21H46O3Si
    Molecular Weight 374.68 g/mol
    Appearance Colorless to pale yellow liquid
    Boiling Point Approx. 195 - 198 °C at 1.33 kPa
    Flash Point Approx. 104 °C
    Density Around 0.89 g/cm³ at 25 °C
    Solubility Soluble in most organic solvents, insoluble in water
    Vapor Pressure Low vapor pressure
    Refractive Index Approx. 1.438 - 1.442 at 20 °C
    Stability Stable under normal conditions, avoid heat, open flames and strong oxidizing agents

    As an accredited N-Octadecyltrimethoxysilane factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 100 - gram bottle of N - Octadecyltrimethoxysilane with secure, chemical - resistant packaging.
    Storage N - Octadecyltrimethoxysilane should be stored in a cool, dry, well - ventilated area. Keep it away from heat sources, open flames, and moisture as it is reactive. Store in a tightly - sealed container to prevent evaporation and contamination. Avoid storing near oxidizing agents. Follow proper safety protocols for handling and storing this chemical to ensure its stability and safety.
    Shipping N - Octadecyltrimethoxysilane is shipped in well - sealed containers, often drums or bottles. Due to its chemical nature, it's transported with proper handling to prevent spills, in compliance with regulations for chemical shipments.
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    N-Octadecyltrimethoxysilane
    General Information
    Historical Development
    N - Octadecyltrimethoxysilane, the organosilicon compound also. Its traces can be traced back to the past. At the beginning, the chemists explored the organosilicon compound and expanded its use. This compound was first discovered, and scholars studied its properties in detail. In the field of surface modification and material modification, it gradually showed its ability. In the past, experiments have been carried out, and unremitting research has revealed its reaction mechanism and improved its preparation method. Over the years, technology has advanced, and N - Octadecyltrimethoxysilane is widely used in coatings, textiles, and electronics. Its history is the evidence of the wisdom and diligence of chemists, laying a foundation for the prosperity of materials science.
    Product Overview
    N - Octadecyltrimethoxysilane, the organosilicon compound is also. Its molecules contain long-chain alkyl and trimethoxy silicon groups. This substance is a colorless to light yellow transparent liquid with certain volatility.
    Because of its unique structure, it has a wide range of uses. In the field of material surface modification, it can form a hydrophobic film on the surface of the material to improve the waterproof and antifouling properties of the material. If applied to building materials, it can make the building surface water-repellent and prolong the service life. In the coating industry, the addition of this compound can improve the adhesion between the coating and the substrate, and improve the weather resistance of the coating. It can also be used as a modifier to enhance the dispersion and stability of nanoparticles and help optimize the performance of nanomaterials.
    Physical & Chemical Properties
    N-Octadecyltrimethoxysilane, the organosilicon compound is also. Its physical and chemical properties are unique and valuable to explore. Looking at its physical properties, it is mostly liquid at room temperature and has low volatility. This characteristic makes the compound have good stability in a specific environment. When it comes to chemical properties, it contains methoxy groups, has active chemical activity, and can react with many substances. It can condensate with the surface rich in hydroxyl groups to form strong chemical bonds to achieve surface modification of materials. It is widely used in the field of materials science, or used to prepare hydrophobic materials. By virtue of its own characteristics, it gives the material hydrophobic ability and good water blocking effect. The advantages of the physical and chemical properties of this compound make it important for scientific research and industrial applications.
    Technical Specifications & Labeling
    Nowadays, there are N-Octadecyltrimethoxysilane this product, which is related to its technical specifications and identification (product parameters), and should be discussed in detail. The preparation method needs to follow precise procedures. The selection of raw materials must be high-quality and the ratio must be appropriate. When reacting, parameters such as temperature and duration are all key, and must be strictly controlled to ensure the quality of the product.
    Regarding its identification, the composition, properties, uses, etc. should be clearly indicated. Product parameters should also be listed in detail, such as purity geometry, impurity content, and physical and chemical characteristics. In this way, users can understand its performance, use it properly in practical applications, give full play to its maximum effectiveness, and ensure the safety of use and avoid future problems.
    Preparation Method
    This product is made of N-Octadecyltrimethoxysilane. To prepare the raw materials, octadecanol and trimethoxysilane are required, and the two are matched in an appropriate ratio. The preparation process is as follows: In a clean reactor, the temperature is controlled in an appropriate range, the raw materials are placed in sequence, and the stirring is started. At the beginning of the reaction, the rate is slightly slower, and the reaction intensifies with the gradual rise of temperature. Close monitoring of the reaction process, observation of its phenomenon, until the reaction reaches the expected level. After the reaction is completed, the impurities are removed by the purification method to obtain a pure product. This preparation process, the control of temperature, ratio and reaction time is very important, and it is related to the quality of the product. Each step should be strictly operated and followed by specifications to obtain optimum results.
    Chemical Reactions & Modifications
    Nowadays, there are chemical substances N - Octadecyltrimethoxysilane. In the field of chemistry, its chemical reaction and modification are very important. The chemical reaction of this substance often involves the formation and fracture of siloxane bonds. Its methoxy group can be hydrolyzed in contact with water to form a silanol group, which can then be condensed with other substances to construct a cross-linked structure.
    As for modification, its long-chain alkyl group can give the material special surface properties. Coating it on the surface of the material can change its wettability and make the surface hydrophobic. It can also be grafted to the polymer by chemical reaction to enhance the mechanical properties and thermal stability of the material. This is due to the interaction between the long-chain alkyl groups and the chemical bonding of the siloxane with the matrix. In this way, N - Octadecyltrimethoxysilane in the way of material modification, the prospect is quite promising.
    Synonyms & Product Names
    Today there is a thing called N-Octadecyltrimethoxysilane. There are many different names, and people call it by different names. This thing is sold in the market, or it is called by another name. Because the world has many habits and conveniences in naming it, there are many of the same thing.
    This thing is also widely used, and its performance is unique, which is required for all kinds of craftsmanship. And although there is occasional confusion between exchanges, it can also be seen that it is involved in different fields and different groups of people. Only when you know its same name can you get its details. When you use this thing, it will not be wrong, so that you can do your best and benefit me.
    Safety & Operational Standards
    Specifications for the safety and operation of N-octadecyl trimethoxysilane
    N-octadecyl trimethoxysilane is also a commonly used material for chemical preparation and research. Its safety and operation specifications are of paramount importance and are related to the safety of the researcher and the smooth operation of the experiment.
    In terms of safety, this substance has certain chemical activity. When storing, it should be placed in a cool, dry and well-ventilated place. Keep away from fire and heat sources to prevent the risk of fire or explosion. Because it may be irritating to the skin, eyes and respiratory tract, protective measures must be taken during contact. If handling the experiment, wear protective clothing, protective gloves and goggles to ensure that the body is not exposed. If you accidentally touch the skin, quickly rinse with a large amount of water. If it gets into the eyes, you need to rinse immediately and seek medical treatment.
    Discussing the operating specifications, before the experiment, check whether the utensils used are clean and dry. Because this product is prone to hydrolysis in contact with water, it affects its performance and experimental results. When taking it, the action should be stable and accurate to avoid spillage. After use, the remaining drugs should not be discarded at will, and should be properly disposed of in accordance with regulations.
    In the reaction system, strictly control the reaction conditions, such as temperature, pH, etc. Under different conditions, the reaction process and product may be different. During the reaction process, closely observe the phenomenon, and take corresponding measures immediately if there is any abnormality.
    In short, in the use of N-octadecyl trimethoxysilane, it is necessary to strictly adhere to safety and operating standards, so as to ensure the safety of the experiment and obtain accurate results.
    Application Area
    N - Octadecyltrimethoxysilane, silicone compounds are also used. Its application field is quite wide. In the field of material surface modification, the surface of the material can be hydrophobic. Coating this material on the surface of the glass, the glass seems to be "made in heaven", the water droplets roll off without leaving marks, so as to improve the anti-fouling and waterproof performance of the glass. In the preparation of composite materials, it also plays a key role. Mixing it with inorganic fillers can enhance the affinity between the filler and the polymer matrix, and greatly increase the mechanical properties of the composite material. It is like a clever craftsman combining different materials in a clever way to form a strong tool. In the field of micro-nano manufacturing, it can be used as a templating agent to help form micro-nano materials with specific structures, just like Tiangong opening, creating a delicate micro-nano world, paving the foundation for the development of many high-tech.
    Research & Development
    In recent years, I have devoted myself to studying this substance in N-Octadecyltrimethoxysilane, hoping to make progress. This agent is also unique in nature and has a wide range of uses. I have carefully examined its quality, explored its reaction rules, and observed its changes in different environments.
    At the beginning, the preparation method was not good, the yield was not high, and the quality was difficult to maintain. However, I have not been discouraged, and I have tried various things to adjust its parameters and improve its process. After months of work, the method has gradually improved, the yield has risen, and the quality is also stable.
    I am also thinking about the extension of the application of this substance. Modification on the surface of the material has achieved remarkable results, which can increase its hydrophobicity and wear resistance. Tried on all kinds of materials, all have been effective. I believe that with time, N - Octadecyltrimethoxysilane will be able to shine in more fields and contribute to the progress of scientific research and industry.
    Toxicity Research
    In recent years, I have studied the toxicity of chemical substances, especially N-Octadecyltrimethoxysilane. This substance is used more and more widely in the fields of industry and scientific research, but the impact of its toxicity on living things and the environment is still unknown.
    I have carefully observed its properties, observed its response to other things, and explored its entry into the body of living things. The process of experimentation is strictly in accordance with regulations, and the period is confirmed. At the beginning, when I tried it with microorganisms, I saw that it had an impact on the state and colonization of cells. I also used animals as an experiment to observe its oral and percutaneous response.
    The results show that N - Octadecyltrimethoxysilane has certain toxicity, can cause cell damage, and also disturb the physiology of animals. However, in order to understand its full state, it needs to be widely studied and deeply explored, hoping that it can be used as a guide to provide certainty and protect the environment and the safety of life.
    Future Prospects
    I have tried to study N - Octadecyltrimethoxysilane this thing, and I know that it has a wide range of uses. Viewing its properties, it has good interface activity, can form a film on the surface of the material, and increase the hydrophobicity.
    In the future, its protection in buildings can protect masonry for a long time, and wind and rain will not invade. In electronic devices, it can help dissipate heat and protect it from moisture and rot. In biomedicine, it may be able to promote drug release and precise drug application.
    I firmly believe that in time, N - Octadecyltrimethoxysilane will shine, open up new frontiers for various fields, create unprecedented achievements, and develop endless possibilities, becoming a future chapter.
    Where to Buy N-Octadecyltrimethoxysilane in China?
    As a trusted N-Octadecyltrimethoxysilane manufacturer, we deliver: Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements. Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery. Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
    Frequently Asked Questions

    As a leading N-Octadecyltrimethoxysilane supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.

    What are the main uses of N-Octadecyltrimethoxysilane?
    N-octadecyl trimethoxysilane has a wide range of uses. In the field of material surface modification, this material can show great skills. The cover can form a special siloxane base film on the surface of the material, thereby greatly improving the surface properties of the material. In the hydrophobic field, if it is applied to the surface of the material as a treatment agent, the material can achieve excellent hydrophobic effect. If used in building exterior wall materials, it can make it difficult for rainwater to adhere, so it can effectively resist the erosion of water and prolong the service life of building materials, just like putting a strong waterproof armor on the building. In the paint industry, it also has extraordinary performance. Adding an appropriate amount of N-octadecyl trimethoxysilane can enhance the adhesion between the paint and the substrate. After the paint is applied to the surface of the object, it can adhere more firmly and is not easy to peel off. It is like building a tough protective fortress on the surface of the object. At the same time, it can optimize the wear resistance of the paint and make the protective function of the paint more powerful. In the plastics industry, this substance can also play an important role. The addition can improve the processing performance of plastics, make plastics smoother in the molding process, reduce the processing difficulty, and improve the surface gloss of plastic products, making their appearance more beautiful, just like giving plastic products a delicate makeup.
    What are the physical properties of N-Octadecyltrimethoxysilane?
    N-Octadecyl trimethoxysilane is one of the organosilicon compounds. Its physical properties are considerable and are described below. In terms of its appearance, under room temperature, it is often a colorless to light yellow transparent liquid, clear and free of impurities. The light can be seen from people, and the appearance is quite textured. When it comes to density, it is between 0.88 and 0.90g/cm ³. It is lighter than water. When placed in water, it will float on the water surface, like a light boat on the water. Boiling point is also an important physical property. Its boiling point is quite high, about 234-236 ° C. Due to the existence of a certain interaction force between molecules, it needs to supply more energy to make it boil. In terms of solubility, this compound is soluble in common organic solvents, such as toluene and xylene, which can be uniformly dispersed, just like a fish entering water, fusing seamlessly. However, in water, its solubility is not good. Because of its molecular structure, the hydrophobic octadecyl group accounts for a large proportion, so its affinity with water is weak. Volatility is relatively low. In the environment of normal temperature and pressure, the rate of its molecules escaping from the liquid surface is slow, and it can remain in the system for a long time, and its properties are quite stable. Surface tension is also its significant characteristic. Due to its special molecular structure, it can effectively reduce the surface tension of liquids, making liquids easier to spread out, like spring breeze and rain, moisturizing things silently. In summary, N-octadecyl trimethoxysilane has unique physical properties and has important application value in many fields, which cannot be ignored in chemical materials.
    Is N-Octadecyltrimethoxysilane chemically stable?
    The chemical properties of N-octadecyl trimethoxysilane are still stable. Among this substance, the trimethoxysilyl group can be hydrolyzed to form a silanol group, which can be combined with the surface of many inorganic substances, such as glass, metal oxides, etc., through chemical bonds, just like tenon and mortise. In this way, an organic modified layer is built on the surface of the inorganic substance, thereby improving its surface properties. Under normal conditions, N-octadecyl trimethoxysilane is relatively stable and is not prone to spontaneous chemical reactions. However, when exposed to water, the trimethoxy group is easy to hydrolyze. The hydrolysis process is like a trickle, gradually unfolding to form methanol and silanol. This hydrolysis reaction, although not rapid and intense, quietly changes the chemical form of the substance. Silica alcohols can further condense to form silicone bonds, which is like building a stable bridge to build a more complex network structure. The long-chain octadecyl group endows the substance with excellent hydrophobicity. Just like the microstructure of the surface of the lotus leaf, with the unique arrangement of octadecyl groups, it is difficult for water to adhere to its surface and spread out, but form water droplets to roll off. When storing and using this substance, care should be taken to avoid contact with excess moisture to prevent premature hydrolysis and loss of its original efficacy. Just as the proper preservation of precious utensils, it is necessary to pay attention to the taboos of its environment. Overall, under suitable conditions, N-octadecyl trimethoxysilane can maintain its relatively stable chemical properties, providing a reliable and effective application basis for many fields, such as material surface modification, waterproof treatment, etc.
    N-Octadecyltrimethoxysilane need to pay attention to when storing
    When storing N-octadecyl trimethoxysilane, many matters must be paid attention to. This material is active and easily hydrolyzed in contact with water, so the first thing is to prevent moisture. It must be stored in a dry place and sealed tightly to prevent moisture from entering. Furthermore, temperature is also the key. It should be stored in a cool place to avoid high temperature hot topics. If the temperature is too high, it will not promote its chemical reaction, causing its properties to change and reducing its effectiveness. Generally speaking, the temperature should be between 5 and 30 degrees Celsius. Because of its volatility, the storage place must be well ventilated. This can avoid gas accumulation and reduce the risk of safety. And well ventilated, also helps to maintain its stability. In addition, when storing, it should be kept away from fire sources, heat sources and strong oxidants. This is because the substance may be flammable, in case of open flames and hot topics, it is easy to cause fires. And strong oxidants come into contact with it, or react violently, endangering safety. It should also not be mixed with acids, alkalis and other substances. Due to its chemical properties, it encounters with acids and alkalis, or causes hydrolysis and deterioration, which damages its quality. It must be stored in categories according to regulations to ensure its pure and stable quality and use it correctly.
    What are N-Octadecyltrimethoxysilane synthesis methods?
    The synthesis method of N-octadecyl trimethoxysilane has been known for a long time. One method is to use octadecyl chloride and trimethoxysilane as raw materials, and the two interact under specific reaction conditions in a suitable reaction vessel. First, the temperature of the reaction system is adjusted to a certain range so that the two can fully contact and initiate the reaction. This reaction needs to be carried out under the protection of inert gas to prevent the raw materials and products from being affected by impurities in the air. During the reaction process, pay close attention to parameters such as temperature and reaction time, and stir in a timely manner to promote the uniform progress of the reaction. After the reaction is completed, through the separation and purification steps, pure N-octadecyl trimethoxysilane can be obtained. Another method, using octadecanol and trimethoxysilane as the starting material, with the help of the catalyst, the chemical reaction between the two occurs. It is crucial to select a suitable catalyst, which can significantly speed up the reaction rate and has an important impact on the selectivity of the product. In the reaction device, add a quantitative amount of octadecanol and trimethoxysilane, and then add an appropriate amount of catalyst. Set the reaction temperature and time to maintain the stability of the reaction system. After the reaction, use filtration, distillation and other means to remove impurities, refine the product, and finally obtain the target N-octadecyl trimethoxysilane. All synthesis methods have their own advantages and disadvantages, and they need to be carefully selected according to specific needs and conditions before N-octadecyl trimethoxysilane can be synthesized efficiently and with high quality.