4-methylpent-3-en-2-one

4-methylpent-3-en-2-one is an organic ketone compound with the molecular formula C6H10O and CAS number 141-79-7. This unsaturated ketone features a six-carbon chain with a methyl substituent and a double bond, giving it distinctive chemical properties. With a molecular weight of 98.14 g/mol, it belongs to the class of α,β-unsaturated ketones and is classified as a flammable liquid with moderate toxicity warnings under GHS regulations.

4-methylpent-3-en-2-one is a colorless to pale yellow liquid at room temperature with a characteristic fruity, sweet odor. As an organic ketone, it has moderate polarity and limited water solubility but readily dissolves in organic solvents like alcohols, ethers, and hydrocarbons. The presence of the conjugated double bond system affects its reactivity and stability, making it susceptible to oxidation and polymerization under certain conditions.

4-methylpent-3-en-2-one is primarily used as a flavoring agent and fragrance component in the food and cosmetic industries due to its pleasant fruity aroma. It serves as an intermediate in organic synthesis for producing pharmaceuticals, agrochemicals, and specialty chemicals. The compound is also utilized in the manufacture of perfumes, essential oil blends, and as a solvent in certain chemical processes requiring selective dissolution properties.

4-methylpent-3-en-2-one requires careful handling due to its flammable nature and acute toxicity classification. Workers must wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection when necessary. Work areas should have adequate ventilation, and all ignition sources must be eliminated. The compound should be handled in well-ventilated areas or under fume hoods to prevent inhalation exposure and skin contact.

4-methylpent-3-en-2-one must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Storage temperature should be kept below 25°C to prevent volatilization and degradation. The storage area should be equipped with fire suppression systems and spill containment measures. Keep containers away from oxidizing agents and strong acids to prevent unwanted chemical reactions.

Immediate action is required in case of contact with 4-methylpent-3-en-2-one. For skin contact, remove contaminated clothing and rinse thoroughly with water for at least 15 minutes. If inhaled, move the person to fresh air immediately and seek medical attention if breathing difficulties occur. In case of eye contact, flush with clean water for 15 minutes and remove contact lenses if present. Seek medical attention if irritation persists or if ingestion occurs.

4-methylpent-3-en-2-one must be disposed of according to local and national hazardous waste regulations as it is classified as flammable and toxic waste. The compound should never be poured down drains or disposed of with regular waste. Contact licensed hazardous waste disposal companies for proper collection and treatment. Small quantities may be neutralized through controlled incineration at high temperatures in approved facilities with appropriate emission controls.

4-methylpent-3-en-2-one is classified under ADR Class 3 (Flammable Liquids), Packing Group III for transportation purposes. It requires appropriate UN-specification packaging and proper hazard labeling including flammable liquid placards. Transportation vehicles must comply with ADR regulations for flammable substances, including equipment for fire suppression and spill containment. Drivers must hold valid ADR certification and carry proper transport documentation and emergency response information.

4-methylpent-3-en-2-one is regulated under European REACH legislation requiring registration for quantities above 1 tonne annually. It is classified according to CLP regulation with Warning signal word and GHS02/GHS07 pictograms. The substance is not currently listed as SVHC (Substance of Very High Concern). Users must ensure proper risk assessment, safety data sheet availability, and compliance with workplace exposure limits and environmental discharge regulations.

4-methylpent-3-en-2-one is available through OYSI, a leading European distributor of specialty chemicals and industrial raw materials. OYSI provides high-quality 4-methylpent-3-en-2-one with complete regulatory documentation including safety data sheets and certificates of analysis. As an established chemical distributor, OYSI ensures reliable supply chains, proper packaging, and compliance with European chemical regulations for professional and industrial customers across Europe.