4-ethenylpyridine

4-ethenylpyridine is an organic chemical compound with the molecular formula C7H7N and CAS number 100-43-6. It belongs to the pyridine family, featuring a pyridine ring with an ethenyl (vinyl) group attached at the 4-position. With a molecular weight of 105.14 g/mol, this aromatic heterocyclic compound serves as an important intermediate in organic synthesis and polymer chemistry applications.

4-ethenylpyridine is typically a colorless to pale yellow liquid at room temperature with a characteristic pyridine-like odor. As a polar organic compound containing nitrogen, it exhibits good solubility in polar solvents and moderate solubility in water. The presence of both the aromatic pyridine ring and the vinyl group gives it unique reactivity properties, making it valuable for polymerization reactions and chemical synthesis.

4-ethenylpyridine is primarily used as a monomer in polymer synthesis, particularly for producing specialty polymers and copolymers with unique properties. It serves as an intermediate in pharmaceutical synthesis, agrochemical production, and fine chemical manufacturing. The compound is also utilized in the preparation of ion-exchange resins, catalysts, and functional materials due to its ability to undergo both vinyl polymerization and nitrogen coordination reactions.

4-ethenylpyridine should be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods to avoid inhalation exposure. Given its ADR classification as Class 6.1 Group II, it requires careful handling as a toxic substance. Avoid contact with skin, eyes, and clothing, and ensure proper grounding when transferring to prevent static discharge.

4-ethenylpyridine should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources, direct sunlight, and incompatible materials. As a vinyl compound, it may be subject to polymerization, so storage temperatures should be controlled and stabilizers may be required. Keep containers upright and properly labeled, and store away from oxidizing agents, strong acids, and bases to prevent unwanted reactions.

In case of skin contact with 4-ethenylpyridine, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15-20 minutes and remove contact lenses if present. If inhaled, move the person to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult a physician after any significant exposure.

4-ethenylpyridine must be disposed of according to local, national, and international regulations as a chemical waste. It should not be released into the environment, sewers, or regular waste streams. Contact licensed waste disposal companies for proper treatment and disposal. The waste should be collected in appropriate containers, properly labeled, and accompanied by waste identification documents. Incineration at high temperatures in specialized facilities is typically the preferred disposal method.

4-ethenylpyridine is classified under ADR as Class 6.1 (toxic substances), Packing Group II, indicating it requires specific transport regulations for dangerous goods. It must be packaged in UN-approved containers with proper labeling, marking, and documentation. Transport vehicles must carry appropriate placards and emergency response information. Only trained personnel should handle the transportation, and specific routing restrictions may apply depending on local regulations.

4-ethenylpyridine is subject to various chemical regulations including REACH registration requirements in Europe for commercial use above specified tonnages. It is not classified as a Substance of Very High Concern (SVHC) under REACH. However, it must comply with CLP regulation for classification, labeling, and packaging. Users must follow workplace safety regulations, environmental protection laws, and transport regulations for dangerous goods when handling this substance.

4-ethenylpyridine is available through OYSI, a European distributor specializing in technical chemical products. OYSI provides reliable supply chains across Europe with proper documentation, certificates of analysis, and regulatory compliance support. As a professional chemical distributor, OYSI ensures product quality, appropriate packaging, and adherence to all relevant European chemical regulations including REACH registration and proper ADR transport classification for safe delivery.