Butyl methacrylate
CAS Number
97-88-1
EC Number
202-615-1
Abbreviation
BMA
What is Butyl methacrylate?
Butyl methacrylate (CAS 97-88-1), commonly abbreviated as BMA, is a reactive monomer used to build acrylic and methacrylic polymer systems.
Where is Butyl methacrylate used?
- Coatings: copolymerized with other acrylates to tune film flexibility and weather resistance in exterior paints and protective lacquers
- Adhesives and sealants: balances tack and cohesive strength across substrates
- Plastics: acrylic resins for injection-molded plastics and extrusion compounds requiring controlled softness
- Personal care: film-forming systems such as nail coatings and hair fixatives
- It contributes flexibility, adhesion, and durability to finished polymer chains.
Good to know: Typically stabilized with MEHQ to prevent premature polymerization.
Commercial specifications
- Purity specifications of 99%+ are standard for polymer-grade material.
- Clear, inhibited liquid in bulk quantities including IBC totes and ISO tank containers, as well as drum packaging for smaller industrial volumes.
Other Names (Synonyms)
butyl 2-methylpropenoate|N-Butyl methacrylate|butyl 2-methylprop-2-enoate|Butyl 2-methacrylate|Butil metacrilato|2-Methyl-butylacrylat|2-Methyl-butylacrylaat|2-Propenoic acid, 2-methyl-, butyl ester|BMA
What are the physical properties of Butyl methacrylate?
Melting Point -25 °C
Boiling Point 160 °C @ Press: 760 Torr
Density 0.8936 g/cm³ @ Temp: 20 °C
Flash Point 123 °F
Appearance Butyl methacrylate is a flammable, colorless liquid with a mild odor.
Color Clear
Odor Moderate acrylate.
Form Liquid
Water Solubility 3 g/L (20 ºC)
Vapor Pressure 2 mm Hg ( 20 °C)
Refractive Index n 20/D 1.423(lit.)
Log P 3 at 25℃
How is Butyl methacrylate classified and handled safely? Learn More
Warning
GHS02· Flammable GHS07· Irritant GHS08· Health Hazard
Hazard Statements
H226 Flammable liquid and vapor
H315 Causes skin irritation
H316 Causes mild skin irritation
H317 May cause an allergic skin reaction
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
Which trade and regulatory codes apply to Butyl methacrylate?
HS Code 29161490
UN Number 2227
ADR Class 3
Packing Group III
Storage Class 3 - Flammable liquids
WGK (Germany) 1