Acetaldehyde

Acetaldehyde is an organic chemical compound with the molecular formula C2H4O and CAS number 75-07-0. This aldehyde has a molecular weight of 44.05 g/mol and appears as a colorless liquid with a characteristic pungent, fruity odor. It is classified as extremely flammable and poses significant health hazards including carcinogenic and mutagenic properties, requiring careful handling in industrial applications.

Acetaldehyde is a colorless, volatile liquid with a sharp, penetrating fruity odor at room temperature. It has a low boiling point of 20.2°C and is highly soluble in water, alcohol, and most organic solvents. The compound is extremely flammable with a very low flash point, making it highly reactive. Its vapor is heavier than air and can travel considerable distances to ignition sources.

Acetaldehyde is primarily used as an intermediate in the production of acetic acid, pyridine derivatives, and various chemical compounds. It serves as a precursor in manufacturing perfumes, flavoring agents, aniline dyes, and plastics. The compound is also utilized in the production of acetate esters, chloral, and other aldehydes. Additionally, it finds applications in the pharmaceutical industry and as a reducing agent in various chemical processes.

Acetaldehyde requires strict safety measures due to its extreme flammability and health hazards. Always wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection. Work in well-ventilated areas away from heat sources, sparks, and open flames. Use grounding and bonding procedures when transferring the liquid. Avoid skin and eye contact, and prevent inhalation of vapors due to carcinogenic properties.

Acetaldehyde must be stored in tightly sealed containers in cool, dry, well-ventilated areas away from heat, sparks, and ignition sources. Keep containers in a fireproof storage area with appropriate fire suppression systems. Store away from oxidizing agents, acids, bases, and incompatible materials. Maintain storage temperatures below 4°C when possible and ensure containers are properly grounded to prevent static electricity buildup.

Immediate action is required upon acetaldehyde contact. For skin contact, remove contaminated clothing and wash thoroughly with soap and water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15-20 minutes and seek medical attention. If inhaled, move to fresh air immediately and seek medical help. For ingestion, do not induce vomiting and contact emergency services immediately.

Acetaldehyde disposal must comply with local, national, and international waste regulations due to its hazardous classification. The substance should be collected in suitable containers and disposed of through licensed hazardous waste disposal facilities. Never pour down drains or release into the environment. Small quantities may be neutralized under controlled conditions by qualified personnel. Always consult local environmental authorities for specific disposal requirements and procedures.

Acetaldehyde is classified under ADR Class 3 (Flammable Liquids), Packing Group I, indicating maximum transport danger level. It requires specialized packaging, labeling with appropriate hazard symbols, and transport by trained personnel with proper documentation. Vehicles must be equipped with appropriate safety equipment and emergency procedures. Transportation must comply with international dangerous goods regulations including proper segregation from incompatible substances.

Acetaldehyde is subject to extensive regulation under multiple frameworks including REACH registration, CLP classification as carcinogenic (Category 1B) and mutagenic (Category 2). It requires safety data sheets and appropriate hazard communication. The substance faces restrictions in certain applications due to its health hazards and must comply with occupational exposure limits. Industrial users must implement risk management measures and report usage under chemical safety regulations.

Acetaldehyde is available through OYSI, a specialized European distributor of technical chemicals. As a professional chemical supplier, OYSI can provide acetaldehyde with proper documentation, safety data sheets, and regulatory compliance support. Given the substance's hazardous classification, purchase is typically restricted to qualified industrial users with appropriate handling facilities and safety measures. Contact OYSI directly for availability, specifications, and regulatory guidance for your specific application requirements.