2-methylbuta-1,3-diene

2-methylbuta-1,3-diene is an organic compound with the molecular formula C5H8 and CAS number 78-79-5. Also known as isoprene, it is a volatile hydrocarbon with a molecular weight of 68.12 g/mol. This compound belongs to the diene family, characterized by two double bonds in its carbon chain. It is classified as highly flammable and poses significant health hazards including carcinogenic and mutagenic properties, requiring careful handling in industrial applications.

2-methylbuta-1,3-diene is a colorless, volatile liquid at room temperature with a characteristic petroleum-like odor. It has a low boiling point and high vapor pressure, making it readily evaporable. The compound is poorly soluble in water but miscible with most organic solvents. Its unsaturated structure with two double bonds makes it highly reactive, particularly prone to polymerization reactions. These properties contribute to its classification as a Class I flammable liquid.

2-methylbuta-1,3-diene serves primarily as a monomer in the production of synthetic rubber, particularly isoprene rubber and styrene-isoprene-styrene copolymers. It is used in manufacturing adhesives, sealants, and various polymer products. The compound also finds applications in the production of specialty chemicals and as an intermediate in organic synthesis. Due to its reactive nature, it is valuable in creating materials requiring elasticity and durability for automotive, medical, and industrial applications.

Safe handling of 2-methylbuta-1,3-diene requires appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection in poorly ventilated areas. Work should be conducted in well-ventilated spaces or under fume hoods to prevent vapor accumulation. Eliminate all ignition sources as the compound is extremely flammable. Avoid skin and eye contact due to its carcinogenic and mutagenic properties. Use grounding equipment to prevent static electricity buildup during transfer operations.

2-methylbuta-1,3-diene must be stored in a cool, dry, well-ventilated area away from heat sources, sparks, and open flames. Use tightly sealed, appropriate containers to prevent vapor escape and contamination. Store separately from oxidizing agents, acids, and other incompatible materials. Implement temperature control to prevent polymerization, and consider adding stabilizers if recommended. Storage areas should have fire suppression systems and be designed to contain potential spills while preventing vapor accumulation.

In case of skin contact with 2-methylbuta-1,3-diene, 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 seek medical attention. If inhaled, move the person to fresh air and monitor breathing. In case of ingestion, do not induce vomiting and seek immediate medical attention. Always consult a physician after significant exposure due to carcinogenic properties.

2-methylbuta-1,3-diene must be disposed of as hazardous waste through licensed waste management companies in compliance with local and EU regulations. Do not discharge into drains, waterways, or soil due to its environmental impact and chronic aquatic toxicity. Incineration at appropriate high-temperature facilities is typically the preferred disposal method. Ensure proper documentation and tracking of waste disposal. Small quantities should never be disposed of with regular waste but collected for professional hazardous waste treatment.

2-methylbuta-1,3-diene is classified under ADR Class 3 (flammable liquids), Packing Group I, indicating high danger level during transport. Transportation requires specialized packaging meeting UN specifications and proper hazard labeling including flammable liquid markings. Vehicles must be equipped with appropriate safety equipment and drivers need ADR certification. Transport documentation must include safety data sheets and emergency response information. Ensure compliance with European transport regulations and avoid transport during extreme weather conditions that could increase risks.

2-methylbuta-1,3-diene is subject to strict European regulations under REACH and CLP due to its classification as Carcinogenic 1B and Mutagenic 2. It requires safety data sheets, proper labeling with GHS02 and GHS08 pictograms, and the signal word 'Danger'. Although not currently listed as SVHC, its hazardous properties require compliance with occupational exposure limits, environmental protection measures, and reporting requirements. Companies must ensure proper risk assessment and implement appropriate risk management measures throughout the supply chain.

2-methylbuta-1,3-diene is available through OYSI, a specialized European distributor of industrial chemicals. As an established chemical supplier, OYSI provides this compound with proper documentation, safety data sheets, and regulatory compliance support. Due to the hazardous nature of this substance, purchase is typically restricted to qualified industrial users with appropriate handling capabilities. Contact OYSI directly to discuss availability, quantities, packaging options, and delivery arrangements while ensuring compliance with all applicable regulations and safety requirements.