BUTYL METHACRYLATE (BMA)

Butyl Methacrylate (BMA) is the organic compound with the formula C4H9O2CC(CH3)=CH2. 
A colorless liquid, it is a common monomer for the preparation of methacrylate polymers.
Butyl Methacrylate (BMA) is typically polymerized under free-radical conditions.

CAS:    97-88-1
MF:    C8H14O2
MW:    142.2
EINECS:    202-615-1

Synonyms: 2-Methyl-2-propenoic acid butyl ester;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

Butyl methacrylate (BMA) is the organic compound with the formula C4H9O2CC(CH3)=CH2. 
A colorless liquid, it is a common monomer for the preparation of methacrylate polymers. 
Butyl Methacrylate (BMA) is typically polymerized under free-radical conditions.
Butyl Methacrylate (BMA) is a versatile, plasticizing methacrylate monomer that acts as an important building block in many copolymer compositions. 
Serving as a base for acrylic resins, Butyl Methacrylate (BMA) provides exceptional weather resistance, high gloss, color retention, and durability. 
Butyl Methacrylate (BMA) contributes more intermediate glass transition and hardness values, with a glass transition temperature (Tg) of 20 °C.
Butyl Methacrylate (BMA) is a flammable, colorless liquid with a mild odor.
Butylmethacrylate is an enoate ester.
Butyl Methacrylate (BMA) 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.
A clear colorless liquid. 
Flash point 130°F. 
Less dense (7.5 lb / gal) than water and insoluble in water. 
Hence floats on water. Vapors heavier than air. 
Used to make resins adhesives, and oil additives.
Butyl Methacrylate (BMA) is a clear, colorless liquid organic compound used as a chemical building block to make polymers and resins.

Butyl methacrylate (BMA) is an organic compound classified as an ester, specifically the butyl ester of methacrylic acid. 
Butyl Methacrylate (BMA) is a colorless to pale yellow liquid with a characteristic fruity odor. 
Butyl Methacrylate (BMA) is known for its excellent adhesion properties, flexibility, and resistance to UV light, making it a valuable component in various applications, including coatings, adhesives, and sealants. 
Butyl Methacrylate (BMA) has a moderate volatility and is soluble in organic solvents such as ethanol and acetone, but is insoluble in water. 
Butyl Methacrylate (BMA)'s chemical structure features a methacrylate group, which contributes to its polymerization capabilities, allowing it to form durable polymers when subjected to heat or initiators. 
Butyl Methacrylate (BMA) is also recognized for its low toxicity, although appropriate safety measures should be taken during handling due to potential skin and respiratory irritation. 
Overall, Butyl Methacrylate (BMA) is an important monomer in the production of acrylic polymers and copolymers, widely utilized in the manufacturing of paints, plastics, and other materials.

A clear, colorless liquid with a slight acrylic or fruity odor. 
Butyl Methacrylate (BMA)'s comprised of a polymerizable methacrylate functional group on one end and a reactive ester group on the other end. 
Butyl Methacrylate (BMA) is slightly miscible with water, soluble in most organic solvents and has relatively low volatility. 
Butyl Methacrylate (BMA)'s vapor is heavier than air. 
It copolymerizes readily with a wide variety of monomers. 
The added ester group imparts properties such as durability, strength, transparency and an elevated Tg.
Butyl methacrylate (BMA) is a crucial acrylic ester monomer with the mf C8H14O2 and mw 142.2. 
Butyl Methacrylate (BMA)'s molecular structure contains a double bond and an ester group, endowing it with excellent polymerization activity and chemical stability, making it a key raw material for producing high-performance polymers. 
Industrial production primarily involves the ester exchange reaction between methyl methacrylate (MMA) and n-butanol. 
Reaction distillation technology enhances efficiency and reduces energy consumption.

Butyl Methacrylate (BMA) Chemical Properties
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.)
Fp: 123 °F
storage temp.: Store below +30°C.
solubility: 0.36g/l
form: Liquid
color: Clear
Odor: Moderate acrylate.
explosive limit: 2.00-8.00%(V)
Water Solubility: 3 g/L (20 ºC)
BRN: 773960
Henry's Law Constant: 2.0×10-2 mol/(m3Pa) at 25℃, Duchowicz et al. (2020)
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 through the addition of HQME). Incompatible with strong reducing agents, 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
LogP: 3 at 25℃
CAS DataBase Reference: 97-88-1(CAS DataBase Reference)
NIST Chemistry Reference: Butyl methacrylate(97-88-1)
EPA Substance Registry System: Butyl Methacrylate (BMA) (97-88-1)
ECETOC JACC REPORT: Butyl Methacrylate (BMA) (97-88-1)

Uses    
Monomer for resins, solvent coatings, adhe- sives, oil additives; emulsions for textiles, leather, and paper finishing.
Butyl Methacrylate (BMA) 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. 
Butyl Methacrylate (BMA) is also used in dental resins, oil dispersible pesticides, and acrylic surface coatings and as copolymers, for example, in paraffin embedding media.
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.

Coatings and Inks
– High-performance industrial coatings for automotive, marine, and construction applications.
– Emulsion polymerization monomer for architectural coatings.
– UV-curable coatings for rapid curing in electronics, wood finishing, and similar scenarios.

 Adhesives and Sealants
– Used in pressure-sensitive adhesives for tapes, labels, etc.
– As structural adhesives in automotive manufacturing for bonding metals and plastics, meeting lightweighting requirements.
– Used for waterproofing and weather-resistant sealing in building doors/windows and photovoltaic module encapsulation.

 Plastics and Composites
– Copolymerized with methyl methacrylate for optical lenses and lighting equipment.
– Enhances toughness and processability of ABS and PVC for appliance housings and pipes.
– Serves as matrix resin in carbon fiber and glass fiber composites for aerospace and wind turbine blades.

 Textiles and Leather
– Used as finishing agents in high-end apparel fabrics.
– Applied as coating adhesives in footwear and luggage materials.

 Emerging Fields
– Coating material for lithium battery separators, encapsulation films for photovoltaics, and photoresist components.
– Resin matrix for dental restoration materials.

Benefits    
Butyl Methacrylate (BMA) has the characteristics of hydrophobicity, adhesion, water resistance, low temperature performance, toughness and weather resistance.

Health hazards
In terms of the acute toxicity of Butyl Methacrylate (BMA), the LD50 is 20 g/kg (oral, rat). 
Butyl Methacrylate (BMA) is an irritant to the eyes and can cause blindness.

Production Methods    
Butyl Methacrylate (BMA) is produced by the reaction of methacrylic acid or methyl methacrylate with butanol.