MeOCH2CH2OnCH3

MeOCH2CH2OnCH3 is the shorthand for the chemical structure CH3O-CH2-CH2-O-CH3, which corresponds to 1,2-dimethoxyethane (DME), also known as ethylene glycol dimethyl ether. Its molecular formula is C4H10O2 (molar mass about 90.12 g/mol). The SMILES representation is COCCOC. It is a colorless, low-to-moderate polarity ether used primarily as a solvent in organic synthesis and related applications.

Physical properties include a boiling point of approximately 85°C, making it a relatively volatile liquid at room temperature. It is miscible with water and many organic solvents, and it displays a dielectric constant around 7, reflecting its polar character among ether solvents. DME is flammable and should be stored away from heat, flames, and strong oxidizers, with appropriate ventilation and handling precautions.

Production and classification: 1,2-dimethoxyethane belongs to the glyme family of polyethers and is produced by established industrial etherification processes. It is commonly used as a solvent in laboratory and industrial settings, and it can serve as an alternative to other polar aprotic solvents in certain reactions and formulations.

Applications: DME is valued for its ability to stabilize cations and coordinate with metal centers, making it useful in organometallic chemistry, polymerization, and as a co-solvent in various reactions. It is also employed as a solvent in lithium-ion battery electrolytes due to its coordination properties and relatively wide liquid range. Related glymes (such as diglyme) differ in chain length and solvent properties.

Safety notes: As with many ethers, DME poses fire and health hazards if mishandled. Use in well-ventilated areas, avoid ignition sources, and consult the safety data sheet for detailed handling guidelines.