Propanal

Propanal is an organic aldehyde compound with the molecular formula C3H6O and CAS number 123-38-6. It is the simplest three-carbon aldehyde, featuring a carbonyl group (C=O) at the terminal position. With a molecular weight of 58.08 g/mol, propanal is classified as a flammable liquid that poses irritation risks to skin and eyes, requiring careful handling in industrial applications.

Propanal is a colorless liquid at room temperature with a characteristic pungent, fruity odor. It has a boiling point of approximately 49°C and is highly volatile. The compound is miscible with water and most organic solvents due to its relatively short carbon chain. Its low molecular weight and aldehyde functionality make it reactive toward nucleophiles and easily oxidizable to propionic acid.

Propanal serves as an important intermediate in chemical synthesis and manufacturing processes. It is primarily used in the production of propionic acid, propanol, and various pharmaceutical compounds. The chemical industry utilizes propanal in the synthesis of plasticizers, synthetic resins, and as a building block for more complex organic molecules. It also finds applications in flavor and fragrance formulations due to its characteristic odor profile.

Propanal requires careful handling due to its flammable and irritating properties. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and adequate ventilation to prevent vapor inhalation. Work should be conducted away from ignition sources, heat, and sparks. The compound can cause skin and eye irritation, so direct contact must be avoided. Proper fire suppression equipment should be readily available in work areas.

Propanal must be stored in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Containers should be tightly sealed to prevent vapor escape and contamination. The storage area should be equipped with appropriate fire suppression systems due to its Class 3 flammable liquid classification. Keep away from strong oxidizing agents and bases that could react with the aldehyde group, potentially causing dangerous reactions.

Propanal exposure requires immediate first aid measures. For skin contact, remove contaminated clothing and rinse the affected area with plenty of water for at least 15 minutes. In case of eye contact, flush immediately with clean water for 15-20 minutes while holding eyelids open. If inhaled, move the person to fresh air and seek medical attention if respiratory irritation persists. Never induce vomiting if ingested; rinse mouth and seek immediate medical care.

Propanal disposal must comply with local and European waste regulations as a hazardous chemical waste. Small quantities can be carefully evaporated in a well-ventilated fume hood, but larger amounts require professional hazardous waste disposal services. Never pour propanal down drains or into the environment. Contact certified waste management companies for proper collection and treatment. Maintain disposal records as required by REACH and national waste legislation.

Propanal is classified under ADR Class 3 (flammable liquids), Packing Group II, requiring specific transport protocols. Packaging must meet UN specification standards for medium-danger substances. Vehicles must display appropriate hazard placards and carry emergency response information. Drivers need ADR training certification for dangerous goods transport. Shipping documentation must include proper shipping names, hazard classes, and emergency contact information for regulatory compliance.

Propanal is subject to comprehensive European chemical regulations including REACH registration requirements and CLP classification. It must be labeled with GHS pictograms GHS02 and GHS07, along with appropriate hazard statements for flammable liquids and irritant properties. The substance is not currently listed as SVHC (Substance of Very High Concern) but requires safety data sheets for commercial supply and workplace risk assessments under occupational health regulations.

Propanal is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across the continent. OYSI provides propanal with full regulatory compliance documentation, including safety data sheets and certificates of analysis. As experienced chemical distributors, OYSI ensures proper packaging, labeling, and transport arrangements meeting all European regulations for this flammable chemical substance, supporting various industrial applications and research needs.