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Product Name | Methacrylic acid stearyl ester |
Cas Number | 115-28-6 |
Formula | C22H42O2 |
Molar Mass | 338.57 |
Boiling Point | 180-182 °C |
Melting Point | 18-20 °C |
Density | 0.885 g/cm³ |
Refractive Index | 1.442 |
Flash Point | 152 °C |
Solubility In Water | insoluble |
Viscosity | 6.4 cP at 20°C |
Vapor Pressure | 0.21 mmHg at 25°C |
Logp | 9.16 |
Appearance | clear liquid or pale yellow liquid |
What are the main applications of methacrylic acid stearyl ester?
Methacrylic acid stearyl ester has several main applications.The main applications of Methacrylic Acid Stearyl Ester are numerous.
One significant area is in the field of coatings.Coatings is a significant area. It can be used as a monomer in the synthesis of coating polymers.It can be used to synthesize coating polymers as a monomer. When incorporated into coating formulations, it imparts certain beneficial properties.It imparts beneficial properties when incorporated into formulations for coatings. For example, due to the long - chain stearyl group, it can improve the hydrophobicity of the coating.The long-chain stearyl group can, for example, improve the hydrophobicity. This is particularly useful for coatings applied on surfaces that need to resist water penetration, such as in the protection of outdoor structures, automotive coatings, and marine coatings.This is especially useful for coatings that are applied to surfaces where water penetration must be prevented, such as outdoor structures, automotive coatings and marine coatings. The hydrophobic nature helps prevent corrosion and degradation caused by moisture.The hydrophobic properties help prevent corrosion and degradation due to moisture. Additionally, it can enhance the hardness and abrasion resistance of the coating.It can also increase the hardness and resistance to abrasion of the coating. The long - chain structure can contribute to the formation of a more compact and robust polymer network, which is better able to withstand mechanical stresses like rubbing and scratching.The long-chain structure can contribute to a more compact, robust polymer network that is better able withstand mechanical stress like rubbing and scratches.
In the realm of plastics and polymers, methacrylic acid stearyl ester is used for polymer modification.Methacrylic acid and stearyl esters are used to modify polymers in the plastics and polymer industry. It can be copolymerized with other monomers to tailor the properties of the resulting polymers.It can be copolymerized to tailor the properties and characteristics of the polymers. For instance, when copolymerized with acrylic monomers, it can adjust the glass transition temperature of the polymer.When copolymerized, it can be used to adjust the polymer's glass transition temperature. This is valuable in applications where specific temperature - related performance is required.This is useful in applications that require specific temperature-related performance. The long - chain stearyl moiety also acts as an internal lubricant within the polymer matrix.The long-chain stearyl moiety acts as a lubricant inside the polymer matrix. In injection molding processes, this can improve the flowability of the polymer melt, reducing the energy required for processing and enabling the production of more complex plastic parts with better surface finish.This can improve the flowability in injection molding processes. It reduces the energy needed for processing, and allows the production of more complex parts with a better surface finish.
Another important application is in the cosmetics industry.Cosmetics is another important application. It can be used in the formulation of lipsticks, creams, and lotions.It can be used to formulate lipsticks, creams and lotions. In lipsticks, it helps to improve the texture, making the lipstick glide smoothly on the lips.It improves the texture of lipsticks and makes them glide more smoothly on the lips. Its emollient properties contribute to a more comfortable and long - lasting application.Its emollient qualities contribute to a more comforting and long-lasting application. In creams and lotions, it can enhance the spreadability and the skin - feel of the product.In creams and moisturizers, it can improve the spreadability of the product and its skin-feel. The long - chain stearyl group gives a soft and smooth sensation on the skin, while the methacrylic acid part can participate in certain chemical reactions to help stabilize the formulation.The long-chain stearyl group provides a smooth and soft feeling on the skin. The methacrylic acids part can help stabilize the formulation by participating in certain chemical reactions.
In the adhesive industry, methacrylic acid stearyl ester can be used to modify the properties of adhesives.Methacrylic acid and stearyl esters can be used in the adhesive industry to modify adhesive properties. It can improve the adhesion to certain substrates, especially those with low surface energy.It can improve adhesion, especially to substrates with low surface energies. By copolymerizing it with other adhesive - forming monomers, the resulting adhesive can have better wetting properties on difficult - to - bond surfaces.The adhesive produced by copolymerizing the monomer with other adhesive-forming monomers can have improved wetting properties for surfaces that are difficult to bond. This is useful in applications such as bonding plastics, metals, and some types of composite materials.This is useful for bonding plastics, metals and some composite materials. It also helps in improving the durability of the adhesive joints, as the hydrophobic and hardening effects contributed by methacrylic acid stearyl ester can resist environmental factors that might otherwise weaken the bond.The hydrophobic and hardening properties of methacrylic acids stearyl esters can also improve the durability of adhesive joints.
How is methacrylic acid stearyl ester produced?
Methacrylic acid stearyl ester is produced through an esterification reaction.Esterification is the process that produces stearyl ester of methacrylic acid. Here are the general steps involved.Here are the general steps.
The raw materials required are methacrylic acid and stearyl alcohol.Methacrylic acid is required as a raw material, and stearyl alchohol is also needed. Methacrylic acid contains a carboxyl group (-COOH), and stearyl alcohol has a hydroxyl group (-OH).Methacrylic Acid contains a carboxyl (-COOH) group, and stearyl Alcohol has an hydroxyl (-OH) group. These two functional groups are key to the formation of the ester.These two functional groups play a key role in the formation of an ester.
The reaction is typically catalyzed.Catalysts are usually used to accelerate the reaction. Commonly used catalysts include sulfuric acid, p - toluenesulfonic acid, or some solid - acid catalysts.Catalysts are commonly used, such as sulfuric acid, toluenesulfonic acids, and solid-acid catalysts. The role of the catalyst is to lower the activation energy of the reaction, facilitating the formation of the ester bond.The catalyst's role is to lower activation energy, which facilitates the formation of ester bonds.
In the reaction process, methacrylic acid and stearyl alcohol are mixed in a suitable reaction vessel.In the reaction, methacrylic and stearyl acids are mixed in an appropriate reaction vessel. The reaction is usually carried out under heating conditions.The reaction is typically carried out in a heated environment. The temperature is carefully controlled, generally in a range where the reaction rate is favorable without causing excessive side - reactions.The temperature is carefully monitored, and is generally kept at a level that is conducive to a good reaction rate without causing side reactions. For this esterification, a temperature in the range of 100 - 150 degC might be typical.Temperatures between 100 and 150 degC are typical for this esterification.
As the reaction progresses, the carboxyl group of methacrylic acid reacts with the hydroxyl group of stearyl alcohol.As the reaction proceeds, the carboxyl groups of methacrylic and stearyl alcohol react. A molecule of water is eliminated in the process, and a new bond, the ester bond (-COO-), is formed between the two molecules, resulting in the production of methacrylic acid stearyl ester.In the process, one molecule of water is removed, and a new ester bond (-COO) is formed between the molecules. This results in the production methacrylic ester.
To drive the reaction forward, according to Le Chatelier's principle, the water generated during the reaction can be removed.According to Le Chatelier’s principle, water generated during the reactions can be removed in order to drive the reaction forward. This can be achieved through methods such as using a Dean - Stark apparatus, which allows the separation and removal of water from the reaction system.This can be done by using Dean-Stark apparatuses, which allow the removal of water and separation from the reaction system. By continuously removing water, the equilibrium of the esterification reaction shifts towards the product side, increasing the yield of methacrylic acid stearyl ester.By removing water continuously, the equilibrium of esterification shifts to the product side and increases the yield of methacrylic ester.
After the reaction is completed, the product mixture contains the desired methacrylic acid stearyl ester, unreacted starting materials, the catalyst, and any by - products.The product mixture will contain the desired methacrylic ester, the catalyst and any by-products. Purification steps are then necessary.Then, purification steps are required. First, the catalyst may be neutralized if it is an acidic catalyst.If the catalyst is acidic, it can be neutralized first. This can be done using a base such as sodium carbonate or sodium hydroxide.This can be achieved by using a base, such as sodium hydroxide or sodium carbonate. Then, techniques like distillation can be employed.Then, techniques such as distillation can also be used. Since methacrylic acid stearyl ester has a different boiling point from the other components in the mixture, distillation can effectively separate it from unreacted methacrylic acid, stearyl alcohol, and other impurities, obtaining a relatively pure product of methacrylic acid stearyl ester.Distillation is a good way to separate methacrylic ester from other components.
What are the physical and chemical properties of methacrylic acid stearyl ester?
Methacrylic acid stearyl ester is an important monomer in the field of polymer materials.The monomer methacrylic acid is stearyl ester plays a major role in the polymer industry. Here are its physical and chemical properties:Here are some of its physical and chemistry properties:
Physical properties
1. Appearance: It typically presents as a colorless to slightly yellow liquid or solid.Appearance: It usually appears as a colorless liquid or solid. The state can vary depending on temperature.The state can change depending on the temperature. At room temperature, it may be in a semi - solid or viscous liquid state due to the long - chain stearyl group, which has a relatively high molecular weight and contributes to its physical consistency.It may be semi-solid or viscous at room temperature due to the long-chain stearyl group. This group has a high molecular mass and contributes to it's physical consistency.
2. Odor: It usually has a faint, characteristic odor.Odor: It has a characteristic, faint odor. However, the odor is not overly pungent and is often described as a mild, fatty - like smell related to the stearyl moiety.The odor is not too pungent, but is described as a mild fatty smell.
3. Solubility: It is soluble in many organic solvents such as hydrocarbons (e.g., toluene, hexane) and esters (e.g., ethyl acetate).It is soluble with many organic solvents, such as hydrocarbons, esters, and esters of hydrocarbons, (e.g. toluene). This solubility is attributed to the non - polar nature of the long stearyl chain and the relatively small polar methacrylic acid ester group.This is due to the non-polar nature of the stearyl chain, and the relatively small polar ester group of methacrylic acids. In contrast, it is insoluble in water.It is insoluble in aqueous solutions. The large non - polar stearyl chain disrupts the hydrogen - bonding network of water molecules, making it hydrophobic.The large non-polar stearyl chains disrupt the hydrogen-bonding network of water molecules making it hydrophobic.
4. Melting and boiling points: The melting point of methacrylic acid stearyl ester is relatively low, generally in the range of around 20 - 30 degC.Melting and boiling point: The melting and boiling point of methacrylic ester stearyl acid is generally around 20-30 degC. This is because although the long - chain stearyl group has some intermolecular forces such as van der Waals forces, the presence of the methacrylic acid ester group reduces the overall crystallinity and packing efficiency of the molecules, resulting in a relatively low melting point.The melting point is low because, although the long-chain stearyl group exhibits some intermolecular interactions, such as van der Waals, the presence the methacrylic ester group reduces overall crystallinity, and packing efficiency, resulting in the relatively low melting temperature. The boiling point is relatively high, typically above 200 degC, due to the high molecular weight and the combined effect of intermolecular forces.The boiling point of the compound is high, usually above 200 degC. This is due to its high molecular mass and the combined effects of intermolecular force.
Chemical properties
1. Polymerization reactivity: It contains a carbon - carbon double bond in the methacrylic acid part of the molecule.The methacrylic part of the molecule contains a double carbon-carbon bond. This double bond is highly reactive towards free - radical polymerization.This double bond is highly reactive towards free-radical polymerization. Under the influence of initiators (such as azobisisobutyronitrile or benzoyl peroxide), it can polymerize to form poly(methacrylic acid stearyl ester). The resulting polymer has good film - forming properties and is often used in coatings, adhesives, and textile finishing applications.The resulting polymer is a good film-forming material and is used in textile finishing, coatings, adhesives and other applications.
2. Hydrolysis reactivity: The ester group in methacrylic acid stearyl ester is susceptible to hydrolysis.Hydrolysis reactivity : The ester group of methacrylic acids stearyl esters is susceptible to hydrolysis. In the presence of water and an acid or base catalyst, the ester bond can be cleaved.The ester bond may be cleaved in the presence of an acid or a base catalyst and water. In acidic conditions, a slow hydrolysis occurs, producing methacrylic acid and stearyl alcohol.In acidic conditions a slow hydrolysis takes place, resulting in methacrylic and stearyl acids. In basic conditions, saponification takes place more rapidly, yielding the carboxylate salt of methacrylic acid and stearyl alcohol.Saponification occurs more quickly in basic conditions and produces the carboxylate salts of methacrylic alcohol and stearyl. This hydrolysis property can be exploited in some chemical processes or for the degradation of polymers containing this monomer unit.This hydrolysis property is useful in certain chemical processes and for the degradation polymers that contain this monomer unit.
3. Reactivity with other functional groups: The double bond can also react with other unsaturated compounds in addition reactions.Reactivity with other functional group: The double bond is also capable of reacting with other unsaturated compounds. For example, it can participate in Diels - Alder reactions with suitable dienes under specific reaction conditions.It can, for example, participate in Diels-Alder reactions with suitable dienes under specific reaction conditions. The ester group can also react with amines in trans - amidation reactions to form amide - containing derivatives, which can be used to modify the properties of the molecule for different applications.The ester group reacts with amines to form amide-containing derivatives.
Is methacrylic acid stearyl ester harmful to the environment?
Methacrylic acid stearyl ester is a chemical compound used in various industries, and its potential harm to the environment needs to be considered.The environmental impact of methacrylic acid ester, a chemical compound that is used in many industries, must be considered.
Firstly, when it comes to aquatic ecosystems, the fate of methacrylic acid stearyl ester in water is important.First, when it is about aquatic ecosystems, what happens to methacrylic ester stearyl in water is very important. If it enters water bodies, its solubility and persistence can have implications.Its solubility and persistency can have an impact if it enters waterbodies. Although it is an organic ester, its long - chain stearyl group may make it less likely to be highly soluble in water.It is an ester but its long-chain stearyl group could make it less soluble in water. However, once in water, it could potentially adsorb onto suspended particles or sediment.Once in water, however, it may adsorb on suspended particles or sediment. If it accumulates in sediment, it might affect benthic organisms.If it accumulates on sediment, it could affect benthic animals. For example, it could interfere with the feeding or reproductive processes of small invertebrates living in the sediment.It could, for example, interfere with the feeding and reproductive processes of small organisms living in sediment. These organisms form the base of the aquatic food chain, so any disruption to them can have cascading effects on the entire ecosystem.These organisms are the foundation of the aquatic food web, so any disruption can have cascading impacts on the entire ecosystem.
In terms of soil, if the compound reaches the soil, it may interact with soil particles and microorganisms.If the compound reaches soil, it can interact with soil particles or microorganisms. The long - chain structure of methacrylic acid stearyl ester could potentially make it resistant to biodegradation to some extent.The long-chain structure of methacrylic ester stearyl could make it resistant to degradation to some extent. If it accumulates in soil, it might change the physical and chemical properties of the soil.If it accumulates, it could change the physical and chemistry of the soil. For instance, it could affect soil porosity, which is crucial for water infiltration and root growth.It could, for example, affect soil porosity which is vital for water infiltration and roots growth. It could also potentially be taken up by plants through their roots.It could be taken up by the plants via their roots. Once in plants, it may disrupt normal physiological processes, such as nutrient uptake or photosynthesis.Once it is in plants, the chemical may disrupt normal physiological functions, such as nutrient absorption or photosynthesis.
Regarding air, if methacrylic acid stearyl ester is volatilized into the air during industrial processes, it could contribute to air pollution.If methacrylic acids stearyl esters are released into the air as a result of industrial processes, this could contribute to air pollutants. However, due to its relatively high molecular weight, significant volatilization may not be very common.Due to its relatively large molecular mass, significant volatilization is unlikely. But if it does enter the atmosphere, it could potentially participate in chemical reactions, especially in the presence of sunlight and other pollutants.If it enters the atmosphere, it may participate in chemical reactions. This is especially true in the presence sunlight and other pollutants. These reactions could lead to the formation of secondary pollutants, which can have negative impacts on air quality and human health as well as the environment.These reactions can lead to secondary pollutants that can negatively impact air quality, human health and the environment.
In conclusion, methacrylic acid stearyl ester has the potential to be harmful to the environment.Conclusion: Methacrylic acid, stearyl ester is potentially harmful to the environment. Its impacts can be felt across different environmental compartments such as water, soil, and air.Its effects can be felt in different environmental compartments, such as soil, water, and air. Therefore, proper management and control measures should be in place during its production, use, and disposal to minimize its release into the environment and mitigate potential negative effects.It is important to implement management and control measures during production, use and disposal of the product in order to minimize its release and mitigate its potential negative effects.
What are the safety precautions when handling methacrylic acid stearyl ester?
When handling methacrylic acid stearyl ester, several safety precautions should be taken.Safety precautions are necessary when handling methacrylic Acid Stearyl Ester.
First, personal protective equipment is crucial.Personal protective equipment is essential. Wear appropriate chemical - resistant gloves.Wear gloves that are resistant to chemicals. This is because direct contact with the skin can lead to skin irritation.Direct contact with the skin may cause irritation. Nitrile or neoprene gloves are often good choices as they can withstand the potential corrosive effects of the substance.Gloves made of neoprene or nitrile are good options because they can withstand any corrosive effect. Additionally, goggles should be worn to protect the eyes.Goggles are also recommended to protect the eyes. If the substance splashes into the eyes, it can cause serious damage, including irritation, redness, and possible long - term vision problems.If the substance splashes in the eyes, serious damage can occur, including irritation, redness and long-term vision problems. A lab coat or other protective clothing should also be donned to prevent the chemical from coming into contact with regular clothing and potentially seeping through to the skin.Wearing a lab coat or other protective clothing will prevent the chemical from contacting regular clothing and possibly seeping through.
Second, ensure proper ventilation. Methacrylic acid stearyl ester may emit vapors that can be harmful if inhaled.Inhaling vapors from Methacrylic Acid Stearyl Ester can be harmful. Working in a well - ventilated area, preferably under a fume hood, helps to reduce the concentration of these vapors in the breathing zone.It is best to work in an area that is well-ventilated, preferably under a fumehood, in order to reduce the concentrations of these vapors. Inadequate ventilation can lead to respiratory problems such as coughing, shortness of breath, and in severe cases, lung damage.Inadequate ventilation may cause respiratory problems, such as coughing and shortness of breathe, or even lung damage in severe cases.
Third, when storing methacrylic acid stearyl ester, keep it in a cool, dry place away from sources of ignition.Third, store methacrylic ester in a dry, cool place, away from ignition sources. It is flammable, and heat or an open flame can cause it to catch fire.It is flammable and can catch fire if exposed to heat or an open flame. Store it in a designated chemical storage area, separated from incompatible substances.Store it in an area designated for chemical storage, away from incompatible substances. For example, it should not be stored near strong oxidizing agents as this can lead to dangerous chemical reactions.It should not, for example, be stored near strong oxygenating agents because this can cause dangerous chemical reactions.
Fourth, in case of accidental spillage, take immediate action.In the event of an accidental spillage, you should take immediate action. First, evacuate the area if the spill is large enough to pose a significant risk.If the spill is large and poses a risk, you should evacuate the area. Then, use appropriate absorbent materials to clean up the spill.Use absorbent materials to clean the spill. Dispose of the contaminated absorbent in accordance with local environmental regulations.Dispose the contaminated absorbent according to local environmental regulations. If any of the substance gets on the skin, immediately wash the affected area with plenty of water for at least 15 minutes.If the substance gets onto the skin, wash the affected area immediately with plenty of water and for at least 15 min. If it is in the eyes, rinse thoroughly with water and seek medical attention promptly.If the substance gets in your eyes, wash them thoroughly with water. Seek medical attention immediately. If inhaled, move to fresh air and get medical help if symptoms such as dizziness or difficulty breathing persist.If you inhaled it, get to fresh air immediately and seek medical attention if symptoms like dizziness or difficulty with breathing persist.