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N-Butyl methacrylate (C₈H₁₄O₂) is a clear, colorless liquid monomer primarily used to create acrylic polymers and resins.
N-Butyl methacrylate provides polymers with hydrophobicity, flexibility, and weather resistance.
N-Butyl methacrylate is the organic compound with the formula C4H9O2CC(CH3)=CH2.
CAS Number: 97-88-1
Molecular Formula: C8H14O2
Molecular Weight: 142.2
EINECS Number: 202-615-1
Synonyms: Butyl methacrylate, n-Butyl methacrylate, N-Butyl methacrylate, Butylmethacrylate, Butyl methacrylate (BMA), nBMA, Butyl 2-methylprop-2-enoate, Butyl 2-methyl-2-propenoate, Butyl 2-methyl-2-propenate, Butyl 2-methacrylate, Butyl 2-methylacrylate, 2-Propenoic acid, 2-methyl-, butyl ester, 2-Methylacrylic acid, butyl ester, Methacrylic acid butyl ester, Methacrylic Acid Butyl Ester, Methacrylic acid n-butyl ester, Methacrylic acid-butyl ester, Butyl ester of methacrylic acid, n-Butyl alpha-methylacrylate, 2-Methyl butylacrylate, 2-Methyl-butylacrylate, 2-Methyl-butylacrylat, 2-Methyl-butylacrylaat, Methacrylate de butyle, Methacrylsaeurebutylester, Butylester kyseliny methakrylove, Butil metacrilato, BUTYL METHACRYLATE;Butyl Methacrylate BMA;BUTYL METHACRYLATE (STABILISED) FOR SYNT;Butyl Methacrylate, stabilized with MEHQ;Butyl Methacrylate 99%, contains 10 ppM MonoMethyl ether hydroquinone as inhibitor;n-Butyl methacrylate, stabilized with 15 to 20 ppm 4-methoxyphenol;N-BUTYL A-METHYLACRYLATE;BMA,Butyl methacrylate
N-Butyl methacrylate is a common monomer for the preparation of methacrylate polymers.
N-Butyl methacrylate is typically polymerized under free-radical conditions.
N-Butyl methacrylate is a versatile, plasticizing methacrylate monomer that acts as an important building block in many copolymer compositions.
Serving as a base for acrylic resins, N-Butyl methacrylate provides exceptional weather resistance, high gloss, color retention, and durability.
N-Butyl methacrylate contributes more intermediate glass transition and hardness values, with a glass transition temperature (Tg) of 20 °C.
N-Butyl methacrylate is the organic compound with the formula C4H9O2CC(CH3)=CH2.
A colorless liquid, it is a common monomer for the preparation of methacrylate polymers.
N-Butyl methacrylate is typically polymerized under free-radical conditions.
N-Butyl methacrylate is classified as a soft methacrylate monomer because polymers containing high levels of n-BMA generally exhibit greater flexibility and lower stiffness compared with polymers produced from harder monomers such as methyl methacrylate.
The butyl side chain increases molecular mobility within the polymer structure.
N-Butyl methacrylate makes it valuable for producing flexible acrylic materials.
The polymerization of N-Butyl methacrylate is highly exothermic, meaning significant amounts of heat are released as monomer molecules join together to form polymer chains during industrial manufacturing processes.
Careful temperature control is therefore required during large-scale production.
N-Butyl methacrylate makes process monitoring essential in polymer plants.
In copolymer systems, N-Butyl methacrylate is often used to adjust the balance between hardness and flexibility, allowing formulators to design materials that resist cracking while still maintaining adequate mechanical strength.
Small changes in monomer composition can significantly affect final performance.
N-Butyl methacrylate makes it an important formulation tool.
Polymers containing N-Butyl methacrylate generally demonstrate good resistance to water, weathering, ultraviolet radiation, and environmental aging, helping maintain performance during long-term outdoor exposure.
These properties contribute to extended service life in demanding environments.
N-Butyl methacrylate makes them useful in exterior applications.
The ester group within the molecule contributes to good adhesion characteristics by promoting interactions with various substrates and improving compatibility with other resin systems used in coatings and adhesives.
This helps achieve durable and reliable bonding performance.
N-Butyl methacrylate makes it important in surface engineering.
Because of its favorable balance of reactivity and performance, N-Butyl methacrylate has become one of the most widely utilized methacrylate monomers in the global acrylic resin industry for both solvent-based and water-based polymer systems.
Its versatility allows use across many industrial sectors.
N-Butyl methacrylate makes it a cornerstone material in acrylic polymer technology.
N-Butyl methacrylate is a methacrylic ester monomer widely used in the manufacture of acrylic polymers, resins, coatings, adhesives, inks, and plastic materials.
It is produced by the esterification of methacrylic acid with n-butanol and appears as a clear, colorless liquid with a characteristic fruity or ester-like odor.
This makes it an important industrial raw material in polymer chemistry.
The molecule contains both a reactive carbon–carbon double bond and an ester functional group, allowing it to participate readily in free-radical polymerization reactions while contributing useful physical properties to the resulting polymers.
These structural features are responsible for its versatility in industrial applications.
N-Butyl methacrylate makes it a valuable building block for acrylic materials.
Compared with shorter-chain methacrylate monomers, N-Butyl methacrylate introduces greater flexibility, impact resistance, and lower glass transition temperature into polymer systems because of its longer butyl side chain.
As a result, polymers containing n-BMA are generally softer and more flexible.
N-Butyl methacrylate makes it useful in applications requiring toughness and elasticity.
Physically, N-Butyl methacrylate is a low-viscosity liquid with limited water solubility but good compatibility with many organic solvents and polymerization systems.
It is commonly supplied with stabilizers to prevent premature polymerization during storage and transport.
N-Butyl methacrylate makes controlled handling important.
N-Butyl methacrylate is best described as a reactive acrylic monomer used to produce flexible, weather-resistant, and durable polymer materials for a wide range of industrial applications.
Its primary function is to modify and improve the physical properties of acrylic polymers.
N-Butyl methacrylate makes it one of the most widely used methacrylate monomers in industry.
Melting point: -75 °C
Boiling point: 162–165 °C (lit.)
Density: 0.894 g/mL at 25 °C (lit.)
vapor density: 4.91 (15 °C, vs air)
vapor pressure: 2 mm Hg (20 °C)
refractive index: n20/D 1.423 (lit.)
Flash point: 123 °F
storage temp.: Store below +30°C
solubility: 0.36 g/L
form: liquid
color: clear
Odor: moderate acrylate
explosive limit: 2.00–8.00% (V)
Viscosity: 1.06 mm2/s
Water Solubility: 3 g/L (20 °C)
BRN: 773960
Henry's Law Constant: 2.0 × 10^-2 mol/(m3Pa) at 25 °C
Exposure limits:
ACGIH: TWA 5 mg/m3
NIOSH: TWA 5 mg/m3
Stability: Stable (though if no stabilizers are present, it may polymerize; typically stabilized with HQME). Incompatible with strong reducing agents and strong oxidizing agents. Flammable. Water-reactive at high or low pH.
Cosmetics Ingredients Functions: VISCOSITY CONTROLLING; FILM FORMING; FRAGRANCE
Cosmetic Ingredient Review (CIR): Butyl methacrylate (97-88-1)
InChI: 1S/C8H14O2/c1-4-5-6-10-8(9)7(2)3/h2,4-6H2,1,3H3
InChIKey: SOGAXMICEFXMKE-UHFFFAOYSA-N
SMILES: CCCCOC(=O)C(C)=C
LogP: 3 at 25 °C
N-Butyl methacrylate undergoes free-radical polymerization in which the double bond opens and connects with other monomer molecules to form long-chain polymer structures with useful mechanical and chemical properties.
The reaction can be initiated by heat, ultraviolet light, or chemical initiators.
N-Butyl methacrylate makes it suitable for numerous polymer manufacturing processes.
Polymers containing N-Butyl methacrylate exhibit good flexibility, toughness, weatherability, and resistance to cracking under mechanical stress, making them useful in both indoor and outdoor applications.
These properties contribute to long service life and durability.
N-Butyl methacrylate makes them valuable in protective and decorative materials.
N-Butyl methacrylate is frequently used in copolymer systems with monomers such as methyl methacrylate, butyl acrylate, styrene, and ethyl acrylate to achieve a balance between hardness, flexibility, adhesion, and chemical resistance.
The final material properties can be precisely tailored through monomer selection.
N-Butyl methacrylate makes it highly versatile in polymer formulation.
The butyl side group lowers the glass transition temperature (Tg) of acrylic copolymers, increasing flexibility and improving resistance to impact and thermal stress at lower temperatures.
This characteristic is especially important in coatings and adhesives exposed to changing environmental conditions.
N-Butyl methacrylate makes it useful in performance-oriented formulations.
N-Butyl methacrylate is valued because it provides excellent adhesion to various substrates including metals, plastics, wood, and concrete when incorporated into properly designed polymer systems.
This broad substrate compatibility expands its range of applications.
N-Butyl methacrylate makes it important in coating and adhesive technologies.
The monomer also contributes to improved film-forming properties in water-based and solvent-based acrylic systems, allowing the formation of smooth, continuous, and durable polymer films after curing or drying.
Good film formation is essential for coating performance.
N-Butyl methacrylate makes it valuable in surface protection applications.
N-Butyl methacrylate can be used in the production of organic glass, synthetic resins, rubber and varnish, can also be used for textile finishing, can also be used in adhesives and as a polymer plasticizer for harder resins.
N-Butyl methacrylate has the characteristics of hydrophobicity, adhesion, water resistance, low temperature performance, toughness and weather resistance.
N-Butyl methacrylate is frequently selected in polymer design because it provides a combination of flexibility, durability, and weather resistance that is difficult to achieve using harder methacrylate monomers alone.
Its incorporation allows polymers to remain resistant to cracking even when subjected to repeated mechanical stress or temperature fluctuations.
N-Butyl methacrylate makes it valuable in long-life material applications.
The molecular structure of N-Butyl methacrylate contributes to increased free volume and chain mobility within polymer networks, allowing the resulting materials to exhibit greater elasticity and impact resistance than more rigid acrylic systems.
These characteristics are particularly important in coatings and adhesives exposed to dynamic loads.
N-Butyl methacrylate makes it useful in performance-oriented formulations.
N-Butyl methacrylate is commonly used to produce acrylic latex dispersions that combine excellent film-forming ability with strong adhesion and flexibility after drying.
These dispersions are widely employed in water-based coatings and adhesives.
This makes it important in environmentally friendly polymer technologies.
The monomer exhibits good copolymerization compatibility with a broad range of vinyl and acrylic monomers, allowing manufacturers to precisely adjust properties such as hardness, gloss, chemical resistance, and flexibility.
This versatility enables the development of highly specialized material systems.
N-Butyl methacrylate makes it a key component in advanced polymer engineering.
Because polymers containing N-Butyl methacrylate generally possess good resistance to ultraviolet radiation, moisture, and atmospheric exposure, they are often used in applications where long-term outdoor durability is required.
These materials can maintain performance and appearance over extended service periods.
N-Butyl methacrylate makes them valuable in exterior coating technologies.
N-Butyl methacrylate-derived polymers often involves careful control of reaction temperature, initiator concentration, and monomer feed rate to achieve desired molecular weight and polymer architecture.
Small process variations can significantly influence the final material properties.
N-Butyl methacrylate makes process optimization critical in acrylic resin manufacturing.
N-Butyl methacrylate reacts exothermically with acids.
Reacts with oxidizing agents strong oxidizing acids may cause a reaction that is sufficiently exothermic to ignite the reaction products.
Heat is generated with caustic solutions. Generates flammable hydrogen with alkali metals and hydrides.
Uses Of N-Butyl methacrylate:
N-Butyl methacrylate manufacture of methacrylic resins, solvent coatings, adhesives, oil additives; emulsions for textiles, leather and paper finishing; cross-linking methacrylic monomer for use in dental composite materials, artificial nails, etc.
N-Butyl methacrylate is used in the manufacture of acrylic coating resins that provide flexibility, weather resistance, adhesion, and durability for industrial, automotive, and architectural applications.
These coatings maintain appearance and performance under outdoor conditions.
N-Butyl methacrylate makes it important in protective surface technologies.
In pressure-sensitive adhesives, N-Butyl methacrylate is used to improve tack, flexibility, and long-term adhesion performance while maintaining resistance to environmental stress and mechanical deformation.
These properties are essential for tapes, labels, and specialty adhesive products.
N-Butyl methacrylate makes it valuable in adhesive manufacturing.
In automotive coatings and finishes, it is used to enhance impact resistance, gloss retention, and resistance to environmental degradation caused by sunlight, moisture, and temperature fluctuations.
This contributes to improved coating durability.
N-Butyl methacrylate makes it useful in automotive materials engineering.
In construction materials, N-Butyl methacrylate is used to produce polymer dispersions and coating systems that improve flexibility, crack resistance, and substrate protection in demanding outdoor environments.
These materials help maintain structural performance over time.
N-Butyl methacrylate makes it important in construction chemistry.
N-Butyl methacrylate is used to form acrylic binder systems that provide strong substrate adhesion, flexibility, abrasion resistance, and good film formation on various printing surfaces.
These properties support high-quality and durable printed products.
N-Butyl methacrylate makes it valuable in printing and packaging technologies.
In specialty plastics and polymer modifiers, it is used to adjust mechanical properties such as toughness, flexibility, and low-temperature performance while maintaining processability during manufacturing.
This enables the development of customized material systems.
N-Butyl methacrylate makes it important in advanced polymer design.
N-Butyl methacrylate is used as a monomer for resins, solvent coatings, adhesives, oil additives, emulsions for textiles, leather, and paper finishing and in the manufacture of contact lenses.
It is also used in dental resins, oil dispersible pesticides, and acrylic surface coatings and as copolymers, for example, in paraffin embedding media .
N-Butyl methacrylate is used as a primary monomer in the production of acrylic polymers and copolymers for industrial and commercial applications.
It helps adjust flexibility, toughness, and weather resistance in the final material.
N-Butyl methacrylate makes it a fundamental raw material in polymer manufacturing.
In paints and coatings, N-Butyl methacrylate is used to improve film flexibility, adhesion, impact resistance, and long-term outdoor durability while maintaining good appearance and weather stability.
It is commonly found in architectural and industrial coating systems.
N-Butyl methacrylate makes it important in coating technology.
N-Butyl methacrylate is used to enhance elasticity, bonding performance, and resistance to cracking caused by mechanical stress or temperature fluctuations.
These properties help maintain long-term adhesion reliability.
N-Butyl methacrylate makes it valuable in adhesive engineering.
N-Butyl methacrylate is used to produce acrylic binder systems that provide flexibility, durability, and good substrate adhesion while maintaining print quality and resistance to wear.
These properties are important for packaging and commercial printing applications.
N-Butyl methacrylate makes it useful in printing technology.
In plastics and specialty polymers, it is used to modify impact resistance, flexibility, and processing behavior, allowing manufacturers to tailor material properties for specific performance requirements.
It is commonly used as a copolymer component rather than as a single monomer.
N-Butyl methacrylate makes it important in materials design.
In textile, paper, and leather coatings, N-Butyl methacrylate is used to form protective polymer films that improve flexibility, durability, and resistance to environmental exposure and mechanical wear.
These coatings help extend product life and maintain appearance.
N-Butyl methacrylate makes it useful in surface treatment applications.
N-Butyl methacrylate is used in acrylic emulsion resins for water-based paints and coatings, where it improves film flexibility, adhesion, and weather resistance while supporting low-VOC formulations.
These systems are widely used in architectural and industrial applications.
N-Butyl methacrylate makes it important in modern coating technologies.
In pressure-sensitive adhesive formulations, it is used to provide long-lasting tack, flexibility, and resistance to peeling or cracking under repeated stress conditions.
These properties are essential for tapes, labels, and protective films.
N-Butyl methacrylate makes it valuable in adhesive product manufacturing.
In automotive coating systems, it is used to enhance durability, chip resistance, gloss retention, and environmental stability under exposure to sunlight, moisture, and temperature changes.
These characteristics help extend coating service life.
N-Butyl methacrylate makes it useful in automotive finishing technologies.
In construction materials, it is used to produce flexible polymer dispersions, sealants, and protective coatings that resist weathering and substrate movement without losing adhesion.
This improves the durability of building materials.
N-Butyl methacrylate makes it important in construction chemistry.
N-Butyl methacrylate is used to create flexible protective coatings that improve abrasion resistance, appearance, and durability while maintaining softness of the substrate.
These coatings help extend product lifespan.
N-Butyl methacrylate makes it useful in surface finishing applications.
In specialty polymer blends, it is used to modify toughness, flexibility, and low-temperature performance while maintaining desirable processing characteristics during manufacturing.
This enables the production of customized engineering materials.
N-Butyl methacrylate makes it important in advanced materials development.
Safety Profile Of N-Butyl methacrylate:
Moderately toxic by intraperitoneal route, mddly toxic by ingestion, inhalation, and skin contact.
An experimental teratogen experimental reproductive effects.
A skin irritant, flammable liquid when exposed to heat or flame.
Explosive in the form of vapor when exposed to heat or flame.
Violent polymerization can be caused by heat, moisture, oxidizers.
To fight fire, use foam, dry chemical, CO2.
When heated to decomposition it emits acrid smoke and irritating fumes.
N-Butyl methacrylate is a flammable reactive monomer that presents moderate industrial hazards related to irritation, vapor exposure, and polymerization risks during storage and handling.
N-Butyl methacrylate liquid monomer requires controlled industrial safety procedures.
This makes proper handling essential.
Direct skin or eye contact may cause irritation, redness, discomfort, and inflammation, particularly after prolonged or repeated exposure to concentrated material.
Protective gloves and eye protection are recommended during use.
N-Butyl methacrylate makes personal protective equipment important.
Exposure to high vapor concentrations may cause respiratory irritation, headaches, dizziness, drowsiness, or discomfort, especially in enclosed or poorly ventilated work areas.
Proper ventilation helps minimize inhalation risks.
N-Butyl methacrylate makes engineering controls necessary.
The monomer contains a reactive double bond and therefore may undergo self-polymerization if exposed to excessive heat, contamination, or loss of inhibitor protection, potentially generating significant heat and pressure.
Storage conditions must therefore be carefully controlled.
N-Butyl methacrylate makes process safety critical.
N-Butyl methacrylate is a combustible liquid capable of forming flammable vapor–air mixtures that may ignite in the presence of sparks, flames, or other ignition sources.
Appropriate fire prevention measures are required during storage and transport.
N-Butyl methacrylate makes flammability management important.
