- Butyl methacrylate
- Butyl 2-Methyl-2-Propenate
Clear, colorless liquid, sweet fruity odor.
Monomer for resins, solvent coatings, adhesives, oil additives, emulsions for textiles, leather & paper finishing.
Registry Numbers and Inventories.
EC Index Number
Flammable; Irritant; Sensitising
R 10 36/37/38 43
Drug; Reproductive Effector; Primary Irritant
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
2.4 (25 C)
Vapor density (air=1)
0.24% at 20 C
0.32 (butyl acetate=1)
0.8951 g/cm3 (20 C)
Solubility in water
3.116 cp at 70 deg f
1.4240 (20 C)
Partition coefficient, pKow
Heat of fusion
Heat of vaporization
Heat of combustion
Hazards and Protection.
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep refrigerated. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Store protected from moisture. Do not exceed 25-30C. Store protected from light. Keep away from oxidizing agents.
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Use with adequate ventilation. Store protected from light. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Stable at room temperature in closed containers under normal storage and handling conditions. Polymerization at low temperatures may occur.
Strong acids, strong bases, strong oxidizing agents, strong reducing agents, moisture, heat.
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Upper exp. limit, %
Lower exp. limit, %
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. May polymerize explosively when involved in a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.
Containers may explode due to polymerization.
Fire may produce irritating, corrosive and/or toxic gases.
May cause reproductive and fetal effects.
Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. Vapors may cause dizziness or suffocation. Causes irritation of the mucous membrane and upper respiratory tract.
Causes skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
Causes eye irritation. May cause conjunctivitis. Lachrymator. Causes redness and pain.
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.