Methacrolein
Pharmaceutical Materials 2025-03-02
CAS Number: 78-85-3
Molecular Formula: C4H6O
Molecular Weight: 70.09 g/mol
Appearance: Colorless to pale yellow liquid with a strong pungent odor
Boiling Point: 69 °C
Density: 0.85 g/mL at 25 °C
Usage: Used in the manufacture of copolymers and resins, as well as a raw material for methacrylic acid and thermoplastic monomers.
| Attribute | Details |
|---|---|
| Name | Methacrolein |
| CAS Number | 78-85-3 |
| Other Names | 2-Methyl, Isobutenaldehyde |
| Molecular Formula | C4H6O |
| Molecular Weight | 70.09 g/mol |
| Appearance | Colorless liquid with a strong pungent odor |
| Physical Properties | |
| – Density | 0.85 g/cm³ at 25°C |
| – Melting Point | -81°C |
| – Boiling Point | 68-69°C |
| – Flash Point | -15°C |
| – Refractive Index | 1.416 (at 20°C) |
| Solubility | Slightly soluble in water; highly soluble in organic solvents such as ethanol and ether |
| Chemical Properties | Reactive; can undergo oxidation, polymerization, and other chemical reactions. |
| Uses | Used in the manufacture of copolymers and resins, as a raw material for methacrylic acid and thermoplastic plastic monomers. |
| Hazard Information | Toxic; irritant to eyes, respiratory tract, and skin. Flammable; forms explosive mixtures with air. |
| Precautions | Keep away from heat, sparks, and open flames. Store in a cool, well-ventilated place. Wear appropriate protective clothing, gloves, and eye/face protection. |
| First Aid Measures | In case of skin contact, remove contaminated clothing and wash thoroughly with soap and water. In case of eye contact, rinse eyes with plenty of water. If inhaled, move to fresh air and seek medical attention. If swallowed, drink large amounts of water, induce vomiting (if conscious), and seek medical attention. |
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