Ethene

Ethene is the simplest alkene hydrocarbon with the molecular formula C2H4 and CAS number 74-85-1. It is a colorless, flammable gas at room temperature with a molecular weight of 28.05 g/mol. Ethene contains a carbon-carbon double bond, making it highly reactive and an important building block in the petrochemical industry. It is classified as a flammable gas and pressurized gas under GHS regulations.

Ethene is a colorless gas at room temperature and atmospheric pressure with a slightly sweet odor. It has a boiling point of -103.8°C and a melting point of -169.2°C. The gas is lighter than air with a density of 1.178 kg/m³ at standard conditions. Ethene is slightly soluble in water but readily soluble in organic solvents. It forms explosive mixtures with air in concentrations between 2.7% and 36% by volume.

Ethene is primarily used as a raw material in the petrochemical industry for producing polyethylene, the world's most common plastic. It serves as a feedstock for manufacturing ethylene oxide, ethylene glycol, and vinyl chloride. In agriculture, ethene acts as a natural plant hormone to accelerate fruit ripening. It is also used in welding applications and as an intermediate in the production of various chemicals including alcohols and aldehydes.

Ethene requires careful handling due to its flammable and pressurized gas properties. Use appropriate respiratory protection and ensure adequate ventilation to prevent accumulation. Eliminate all ignition sources including static electricity, sparks, and open flames. Wear safety goggles and protective gloves when handling. Ground all equipment to prevent static discharge. Handle cylinders carefully to avoid damage and ensure proper valve operation. Work in well-ventilated areas or use local exhaust ventilation systems.

Ethene must be stored in approved pressure vessels in cool, dry, well-ventilated areas away from heat sources and ignition points. Store cylinders upright and secured to prevent falling. Keep away from oxidizing agents and incompatible materials. Storage areas should have appropriate fire detection and suppression systems. Maintain storage temperatures below 40°C and protect cylinders from direct sunlight. Ensure proper labeling and inventory management according to local regulations.

Ethene exposure primarily occurs through inhalation, causing potential respiratory irritation and asphyxiation in high concentrations. If inhaled, immediately move the person to fresh air and keep them at rest. Administer oxygen if breathing is difficult and seek medical attention if symptoms persist. In case of skin contact with liquid ethene (from pressurized containers), treat for cold burns with lukewarm water and seek medical attention. Never attempt rescue in oxygen-deficient atmospheres without proper breathing apparatus.

Ethene disposal must comply with local environmental regulations as it is classified as a flammable gas. Small quantities can be safely vented in well-ventilated areas away from ignition sources, ensuring complete dispersion. Large quantities should be disposed of through licensed waste management companies experienced in handling flammable gases. Empty cylinders should be returned to suppliers or recycled through approved facilities. Never dispose of ethene in confined spaces or near populated areas.

Ethene is classified under ADR Class 2 as a flammable gas for transportation purposes. It must be transported in approved pressure vessels with proper labeling including GHS02, GHS04, and GHS07 pictogrammes. Vehicles must carry appropriate emergency equipment and placards. Drivers require ADR certification for dangerous goods transport. Ensure adequate ventilation during transport and avoid exposure to heat sources. Follow specific routing restrictions and emergency response procedures as required by transportation regulations.

Ethene is regulated under multiple European frameworks including REACH, CLP, and ADR regulations. It is classified as Flammable Gas Category 1, Pressurized Gas, and STOT SE Category 3 under CLP. The substance carries the signal word 'Danger' and requires appropriate pictogrammes (GHS02, GHS04, GHS07). While not currently listed as an SVHC, it is subject to standard chemical safety assessments and workplace exposure limits established by national authorities.

Ethene is available through OYSI, a leading European distributor of technical chemicals and industrial gases. OYSI provides ethene in various purities and packaging options suitable for different industrial applications. As an established chemical distributor, OYSI ensures compliance with all relevant European regulations including REACH registration and CLP labeling requirements. Contact OYSI directly for specific grades, quantities, pricing information, and delivery options to your location within Europe.