Ethyl (E)-4-oxo-4-phenylbut-2-enoate

Ethyl (E)-4-oxo-4-phenylbut-2-enoate is an organic chemical compound with the molecular formula C12H12O3 and CAS number 15121-89-8. This ester compound has a molecular weight of 204.22 g/mol and features a phenyl group attached to a butenoate chain. It is classified as a hazardous substance with multiple danger classifications including acute toxicity, skin and eye irritation, skin sensitization, and aquatic toxicity, requiring careful handling in industrial applications.

Ethyl (E)-4-oxo-4-phenylbut-2-enoate is an organic ester with a molecular weight of 204.22 g/mol and molecular formula C12H12O3. As a conjugated α,β-unsaturated ketone ester, it typically appears as a crystalline or liquid substance at room temperature. The compound contains both hydrophobic (phenyl) and hydrophilic (ester, carbonyl) functional groups, affecting its solubility properties. Specific physical properties such as melting point, boiling point, and exact appearance may vary depending on purity and storage conditions.

Ethyl (E)-4-oxo-4-phenylbut-2-enoate serves as an important intermediate in organic synthesis and pharmaceutical chemistry. The compound's α,β-unsaturated ketone structure makes it valuable for Michael addition reactions and other synthetic transformations. It is commonly used in the preparation of complex organic molecules, including potential pharmaceutical compounds and fine chemicals. Its reactivity profile makes it particularly useful in academic research and specialized chemical manufacturing applications requiring specific structural modifications.

Ethyl (E)-4-oxo-4-phenylbut-2-enoate requires careful handling due to its Danger signal word and multiple hazard classifications. Essential protective equipment includes chemical-resistant gloves, safety goggles or face shield (due to Eye Dam. 1 classification), and protective clothing to prevent skin contact. Work in well-ventilated areas or under fume hoods to avoid inhalation. The compound causes skin irritation and sensitization, so immediate removal of contaminated clothing and thorough washing after contact is crucial. Avoid release to environment due to aquatic toxicity.

Ethyl (E)-4-oxo-4-phenylbut-2-enoate should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Due to its hazardous nature, store separately from incompatible materials and ensure proper labeling with GHS pictograms (GHS07, GHS05, GHS09). The storage area should be equipped with appropriate spill containment measures and emergency equipment. Keep containers upright and inspect regularly for damage or leaks. Access should be restricted to trained personnel only.

Immediate action is required upon contact with ethyl (E)-4-oxo-4-phenylbut-2-enoate due to its irritating and sensitizing properties. For skin contact, immediately remove contaminated clothing and rinse thoroughly with plenty of water for at least 15 minutes. For eye contact, flush immediately with water for at least 15 minutes and remove contact lenses if present. If inhaled, move to fresh air immediately. Due to acute toxicity classification, seek immediate medical attention in all cases of exposure and provide the safety data sheet to medical personnel.

Ethyl (E)-4-oxo-4-phenylbut-2-enoate must be disposed of through authorized hazardous waste disposal services due to its toxic and environmentally harmful properties. The compound cannot be disposed of in regular waste streams or poured down drains due to its aquatic toxicity (Aquatic Acute 1). Collect waste in compatible, labeled containers and arrange collection by licensed waste management companies. Follow local and EU regulations for hazardous chemical disposal, including proper documentation and manifesting. Never attempt incineration or neutralization without proper equipment and authorization.

Ethyl (E)-4-oxo-4-phenylbut-2-enoate is classified under ADR Class 6.1 (Toxic substances), Packing Group III for transportation. This classification requires specific packaging, labeling, and documentation according to dangerous goods regulations. Containers must be properly sealed, labeled with appropriate hazard diamonds, and accompanied by transport documents including safety data sheets. Only trained personnel should handle the transportation, and vehicles must comply with ADR requirements for Class 6.1 substances. Emergency response information must be readily available during transport.

Ethyl (E)-4-oxo-4-phenylbut-2-enoate is subject to comprehensive EU chemical regulations including REACH and CLP. The compound is not identified as a Substance of Very High Concern (SVHC), but its hazardous properties require compliance with classification, labeling, and packaging requirements under CLP regulation. Users must ensure proper risk assessments, safety data sheet distribution, and worker protection measures. The substance may also fall under specific national regulations regarding toxic substances and environmental protection due to its aquatic toxicity classification.

Ethyl (E)-4-oxo-4-phenylbut-2-enoate is available through OYSI, a specialized European distributor of technical chemicals. OYSI provides reliable access to this compound for industrial and research applications across Europe, ensuring proper packaging, documentation, and regulatory compliance. As a professional chemical distributor, OYSI maintains appropriate safety standards and can provide technical support, safety data sheets, and guidance on handling requirements. Contact OYSI directly for availability, specifications, and technical assistance for your specific application requirements.