2-ethoxy-3,4-dihydro-2H-pyran

2-ethoxy-3,4-dihydro-2H-pyran is an organic compound with the molecular formula C7H12O2 and CAS number 103-75-3. It belongs to the pyran family, featuring a six-membered ring containing one oxygen atom. This compound has a molecular weight of 128.17 g/mol and is characterized by an ethoxy group attached to the dihydropyran ring structure. It is commonly used as an intermediate in organic synthesis and chemical manufacturing processes.

2-ethoxy-3,4-dihydro-2H-pyran is a colorless to pale yellow liquid at room temperature with a characteristic ether-like odor. The compound has a molecular weight of 128.17 g/mol and contains both ether and cyclic structural elements. It exhibits moderate volatility and is soluble in organic solvents such as alcohols, ethers, and hydrocarbons. The presence of the ethoxy group influences its polarity and solubility characteristics in various chemical systems.

2-ethoxy-3,4-dihydro-2H-pyran is primarily used as a chemical intermediate in organic synthesis and pharmaceutical manufacturing. It serves as a building block for the production of more complex organic molecules and can be employed in the synthesis of various pharmaceutical compounds. The compound is also utilized in specialty chemical manufacturing, research and development applications, and as a reagent in laboratory synthesis procedures where pyran derivatives are required.

2-ethoxy-3,4-dihydro-2H-pyran should be handled with standard laboratory safety precautions despite having no specific GHS classifications. Wear appropriate personal protective equipment including safety goggles, chemical-resistant gloves, and laboratory coats. Work in well-ventilated areas or under fume hoods to avoid inhalation of vapors. Avoid contact with skin, eyes, and clothing. Use proper handling techniques for organic solvents and ensure all equipment is properly grounded to prevent static discharge.

2-ethoxy-3,4-dihydro-2H-pyran should be stored in tightly sealed containers in a cool, dry, and well-ventilated area away from heat sources and ignition sources. Keep containers away from direct sunlight and maintain storage temperatures below 25°C when possible. Store separately from strong oxidizing agents and acids. Ensure storage areas comply with local fire safety regulations for flammable liquids, and regularly inspect containers for leaks or deterioration.

In case of skin contact with 2-ethoxy-3,4-dihydro-2H-pyran, immediately remove contaminated clothing and wash the affected area thoroughly with soap and water for at least 15 minutes. If eye contact occurs, flush eyes with clean water for at least 15 minutes and seek medical attention. In case of inhalation, move the person to fresh air immediately. If ingested, do not induce vomiting and seek immediate medical attention. Always consult safety data sheets for specific emergency procedures.

2-ethoxy-3,4-dihydro-2H-pyran must be disposed of in accordance with local, national, and international waste regulations. The compound should be treated as organic chemical waste and disposed of through licensed waste management companies. Do not pour down drains or release into the environment. Small quantities may be suitable for incineration at appropriate high-temperature facilities. Always consult local environmental authorities and waste management regulations before disposal.

2-ethoxy-3,4-dihydro-2H-pyran is classified under ADR Class 3 (flammable liquids), Packing Group III for transportation purposes. This classification requires appropriate packaging, labeling, and documentation according to dangerous goods transportation regulations. Shipments must comply with ADR/RID requirements for road and rail transport within Europe. Proper shipping names, hazard labels, and transport documents are mandatory. Vehicles must be equipped according to flammable liquid transport regulations.

2-ethoxy-3,4-dihydro-2H-pyran is not classified as a Substance of Very High Concern (SVHC) under REACH regulations and has no specific GHS hazard classifications. However, it remains subject to general REACH registration requirements if imported or manufactured in quantities above one tonne per year. Standard chemical safety assessments and documentation requirements apply. Transport regulations under ADR Class 3 must be followed, and local workplace safety regulations regarding chemical handling apply.

2-ethoxy-3,4-dihydro-2H-pyran is available through OYSI, a European distributor of specialty chemicals and intermediates. OYSI provides reliable supply chains across Europe with appropriate documentation, safety data sheets, and regulatory compliance support. As a professional chemical distributor, OYSI ensures proper packaging, transportation compliance, and technical support for industrial customers requiring this compound for synthesis and manufacturing applications throughout the European market.