Acetaldehyde

Acetaldehyde is an organic chemical compound with the molecular formula C2H4O and a molar mass of 44.05 g/mol. It is a highly flammable liquid classified as a carcinogenic substance (Category 1B) and mutagen (Category 2). This aldehyde is characterized by its volatility and reactivity, making it an important intermediate in various chemical processes. Due to its hazardous properties, it requires careful handling and is subject to strict safety regulations.

Acetaldehyde is a colorless, highly volatile liquid with a characteristic pungent, fruity odor. It has a low boiling point and is miscible with water, ethanol, and most organic solvents. The compound is highly flammable (Flammable Liquid Category 1) and readily evaporates at room temperature. Its molecular structure (C2H4O) makes it chemically reactive, particularly prone to oxidation and polymerization reactions under certain conditions.

Acetaldehyde is primarily used as an intermediate in the production of acetic acid, ethyl acetate, and other organic compounds. It serves as a building block in the manufacture of plastics, synthetic resins, and pharmaceuticals. The chemical industry utilizes it for producing perfumes, flavoring agents, and dyes. Additionally, it finds applications in the synthesis of pyridine derivatives and as a reducing agent in various chemical processes.

Acetaldehyde requires strict safety measures due to its flammable and carcinogenic properties. Personnel must wear appropriate PPE including chemical-resistant gloves, safety goggles, and respiratory protection. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation. Eliminate all ignition sources as it forms explosive vapor-air mixtures. Ground all equipment to prevent static discharge and use explosion-proof electrical equipment in handling areas.

Acetaldehyde must be stored in a cool, dry, well-ventilated area away from heat sources and ignition points. Use appropriate containers resistant to the chemical and ensure proper grounding to prevent static buildup. Store separately from oxidizing agents, acids, and bases to prevent dangerous reactions. Temperature should be kept low to minimize evaporation and maintain product stability. Implement fire prevention measures and ensure storage areas comply with local fire safety regulations.

Immediate removal from exposure is essential when contact with acetaldehyde occurs. For skin contact, rinse thoroughly with water for at least 15 minutes and remove contaminated clothing. In case of eye contact, flush with clean water for 15-20 minutes. If inhaled, move to fresh air immediately and seek medical attention if breathing difficulties persist. For ingestion, do not induce vomiting and seek immediate medical care. Always consult emergency services for serious exposures.

Acetaldehyde disposal must comply with local environmental regulations as it is classified as hazardous waste. The substance should be collected in appropriate containers and handed over to licensed waste disposal companies. Never discharge into sewers, waterways, or soil due to its toxic and environmental impact. Small quantities may be neutralized through controlled oxidation in specialized facilities. Always consult local authorities and waste management experts for proper disposal procedures.

Acetaldehyde is classified under ADR Class 3 (Flammable Liquids), Packing Group I, indicating high danger level for transport. Specialized packaging meeting UN specifications is required, along with proper labeling including GHS02, GHS07, and GHS08 pictograms with 'Danger' signal word. Vehicles must comply with ADR regulations for flammable substances, including appropriate fire extinguishing equipment. Drivers require hazardous materials training and ADR certification for legal transportation.

Acetaldehyde is subject to comprehensive European regulations including REACH registration requirements and CLP classification as Flam. Liq. 1, Carc. 1B, and Muta. 2. While not currently listed as an SVHC substance, its carcinogenic classification means strict occupational exposure limits apply. Companies must implement risk management measures, provide safety data sheets, and ensure worker protection. Additional national restrictions may apply for certain uses or concentrations across EU member states.

Acetaldehyde is available through OYSI, a specialized European distributor of chemical products. As a professional chemical supplier, OYSI can provide technical-grade acetaldehyde with appropriate documentation including safety data sheets and certificates of analysis. Given the substance's hazardous classification, purchases typically require demonstration of proper handling capabilities and intended professional use. Contact OYSI directly for availability, specifications, and regulatory compliance support for your specific application requirements.