Propanal

Propanal is an organic aldehyde with the chemical 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 and irritant substance, requiring careful handling due to its hazardous properties including flammability and potential for skin and eye irritation.

Propanal is a colorless liquid with a characteristic pungent, fruity odor at room temperature. It has a boiling point of 48°C and is highly volatile due to its low molecular weight. The substance is miscible with water and most organic solvents including ethanol and ether. Propanal readily undergoes typical aldehyde reactions such as oxidation and condensation, and its high volatility contributes to its flammable nature.

Propanal serves primarily as an intermediate in organic synthesis and chemical manufacturing. It is used in the production of propionic acid, propanol, and various pharmaceutical compounds. The substance finds applications in flavor and fragrance industries due to its characteristic odor profile. Additionally, propanal is utilized in the manufacture of plastics, resins, and as a building block for more complex organic molecules in fine chemical synthesis.

Propanal requires strict safety protocols due to its flammable and irritant properties. Personnel must wear appropriate PPE including chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods to prevent vapor accumulation. All ignition sources must be eliminated from the work area. Emergency eyewash stations and safety showers should be readily accessible when handling this substance.

Propanal must be stored in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. The substance should be kept in tightly sealed containers made of compatible materials, preferably in a flammable liquids storage cabinet. Storage temperatures should remain below 25°C to minimize vapor generation. Keep away from strong oxidizing agents and bases, as these materials are incompatible and may cause dangerous reactions.

Propanal exposure requires immediate action due to its irritant properties. For skin contact, remove contaminated clothing and wash the affected area with plenty of water for at least 15 minutes. In case of eye contact, flush immediately with water for 15-20 minutes and remove contact lenses if present. If inhaled, move the person to fresh air immediately. Seek medical attention if irritation persists or if large amounts were involved.

Propanal disposal must comply with local, national, and EU waste regulations as a hazardous chemical waste. The substance cannot be disposed of down drains or with regular waste due to its flammable and irritant properties. Arrange disposal through licensed hazardous waste contractors who can handle flammable liquids appropriately. Small quantities may be neutralized or treated according to approved laboratory waste procedures before disposal through authorized channels.

Propanal is classified under ADR as Class 3 (Flammable Liquids), Packing Group II, indicating moderate danger level for transport. Packages must bear appropriate hazard labels including flammable liquid warnings and limited quantity markings where applicable. Transport vehicles require proper placarding and emergency equipment. Drivers must hold valid ADR certification for dangerous goods transport, and shipping documentation must include proper shipping names and hazard information.

Propanal is regulated under EU CLP Regulation with mandatory hazard classification as Flam. Liq. 2, STOT SE 3, Skin Irrit. 2, and Eye Irrit. 2, requiring danger signal word and GHS02/GHS07 pictograms. Under REACH regulation, suppliers must provide safety data sheets and ensure proper registration. The substance is not currently listed as SVHC (Substance of Very High Concern), but users must comply with occupational exposure limits and workplace safety requirements.

Propanal is available through OYSI, a specialized European distributor of technical chemicals serving industrial and professional customers. OYSI ensures regulatory compliance including proper CLP labeling, safety data sheets, and transport documentation. As an established chemical distributor, OYSI provides reliable supply chains across Europe with appropriate packaging and handling for this flammable substance. Contact OYSI directly for availability, specifications, and technical support for your propanal requirements.