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Analytical methods for dimethoxyethane

2015-08-18View Original

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I urgently need an analysis method for dimethoxyethane; could any expert member help provide it? Thank you!
Reply #22015-08-18
This post was last edited by qugd on 2015-8-18 at 15:14. The name of the chemical you mentioned is not a standard designation, nor is it a common colloquial name; it can easily lead to misunderstandings. Based on what you said, it might be dimethyl cellulose solvent (common name); its proper name should be ethylene glycol dimethyl ether, that is, 1,2-dimethylethane. However, it has a diether structure, and using an alkane as the core component makes it difficult for other users to understand. Chromatography can be used to analyze this; a column designed for analyzing ethers or alcohols should work for analysis as well. The following are its general properties: Ethylene glycol dimethyl ether; 1,2-dimethoxyethane; Dimethyl cellulose solvent; Ethylene glycol dimethyl ether; 1,2-dimethoxyethane; 1,2-ethanediol dimethyl ether. CAS number: 110-71-4. Molecular formula: C4H10O2. Molecular weight: 90.12. Boiling point: 84–86°C. Melting point: -58°C. Chinese name: Ethylene glycol dimethyl ether ; 1,2-dimethoxyethane ; Dimethyl cellosolve English name: Ethylene glycol dimethyl ether ; 1,2-dimethoxy-Ethane ; 1,2-dimethoxyethane ; Property description of 1,2-ethanediol, dimethyl ether: colorless liquid. Melting point: -58°C (-71°F), boiling point: 84°C, relative density: 0.8665 (20/4°C), refractive index: 1.3796, flash point: 0°C. Can mix with water ; Miscible with alcohols, soluble in hydrocarbon solvents. It has a strong ether-like odor. Production method: From ethylene glycol monomethyl ether and metallic sodium ; It is obtained by reacting with chloromethane. Ethylene glycol monomethyl ether is refluxed with metallic sodium until the sodium is completely reacted, then the temperature is lowered to 45°C and chloromethane is introduced. After the reaction, fractional distillation is carried out, and the fraction collected at 84–85.5°C is obtained as the final product. Use: Used as a solvent and organic synthesis intermediate.

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