3-Methyl-3-buten-2-one
Pharmaceutical Materials 2025-03-02
CAS Number: 814-78-8
Molecular Formula: C5H8O
Molecular Weight: 84.12
Appearance: Flammable liquid
Melting Point: -54°C
Boiling Point: 98°C
Usage: Used as a solvent and as a monomer for some polymers.
| Attribute | Details |
|---|---|
| Chemical Name | 3-Methyl-3-buten-2-one |
| Synonyms | Mesityl oxide, 4-Methyl-3-penten-2-one, 4-Methylpent-3-en-2-one |
| CAS Number | 550-13-0 |
| Molecular Formula | C6H10O |
| Molecular Weight | 98.14 g/mol |
| Chemical Structure | <img src=”https://pubchem.ncbi.nlm.nih.gov/image/smiles/C=C(C(=O)C)C” /> (Image placeholder, actual structure may vary slightly) |
| Appearance | Colorless to yellow liquid with a fruity odor |
| Physical Properties | |
| – Density | Approximately 0.84 g/mL at 25°C |
| – Boiling Point | 125-126°C |
| – Flash Point | 27°C |
| – Refractive Index | Approximately 1.438 at 20°C |
| Solubility | Soluble in organic solvents such as ethanol, ether, and benzene; slightly soluble in water |
| Chemical Properties | Contains a carbon-carbon double bond and a carbonyl group, which allows it to undergo various organic reactions such as addition, oxidation, and reduction; stable under normal conditions but may be flammable and may decompose at high temperatures |
| Applications | Used as a flavoring agent in foods and beverages; also used in the production of perfumes, cosmetics, and pharmaceuticals; as a reactant in organic synthesis, particularly in the synthesis of heterocyclic compounds and natural products |
| Safety Information | May be harmful if swallowed or inhaled. May cause skin and eye irritation. Keep away from heat, sparks, and open flames. Store in a cool, dry place, away from incompatible materials. Wear appropriate protective clothing, gloves, and eye/face protection when handling. In case of contact with skin or eyes, rinse immediately with plenty of water and seek medical attention if necessary. |
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