Overview
Butyl methacrylate ( CAS 97-88-1 ), commonly abbreviated as BMA, is a reactive monomer used to build acrylic and methacrylic polymer systems across coatings, adhesives, and plastics manufacturing.
It contributes flexibility, adhesion, and durability characteristics to finished polymer chains, making it a core building block in industrial formulation for various high-performance applications.
In architectural and industrial coatings, BMA is copolymerized with other acrylates to tune film flexibility and weather resistance in exterior paints and protective lacquers used in construction.
Pressure-sensitive adhesives and sealant formulations incorporate BMA to balance tack and cohesive strength across a range of substrates, ensuring long-lasting bonds in diverse environmental conditions.
Polymer manufacturers use it to produce acrylic resins for injection-molded plastics and extrusion compounds where controlled softness is required for the final structural components.
In personal care, BMA-based polymers appear in film-forming systems such as nail coatings and hair fixatives, providing the necessary flexibility and hold for consumer cosmetic products.
Butyl methacrylate is supplied as a clear, inhibited liquid in bulk quantities including IBC totes and ISO tank containers, as well as drum packaging for smaller industrial volumes.
It is available in technical and monomer grades, typically stabilized with MEHQ to prevent premature polymerization. Purity specifications of 99%+ are standard for polymer-grade material.
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Physical Properties
| 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℃ |
Safety & Handling
Warning GHS02 GHS07 GHS08 Hazard Statements H226 Flammable liquid and vapor H315 Causes skin irritation H316 Causes mild skin irritation H317 May cause an allergic skin reaction H319 Causes serious eye irritation H320 Causes eye irritation H335 May cause respiratory irritation H361 Suspected of damaging fertility or the unborn child H373 May causes damage to organs through prolonged or repeated exposure H401 Toxic to aquatic life 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. P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment. P242 Use non-sparking tools. P243 Take action to prevent static discharges. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P403+P235 Store in a well-ventilated place. Keep cool. P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29161490 |
| UN Number | 2227 |
| ADR Class | 3 |
| Packing Group | III |
| Storage Class | 3 - Flammable liquids |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 97-88-1
- EC Number
- 202-615-1
- Mol. Weight
- 142.20
- HS Code
- 29161490
- Category
- Polymers & Resins