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Molecular formula : C6H12O3
MW : 132.16
CAS No. :111-15-9
nature : a colorless liquid. Solidification point -61.7 ° C, the boiling point of 156.3 ° C, 51 ° C (kPa), the relative density of 0.973 (20 ° C), -61.7 ° C melting point, refractive index 1.4055 (20 ° C), a flash point of 51 ° C (closed cup), 66 ° C (open cup), lighted 379 ° C With general immiscible organic solvent and water-soluble. A pleasant esters incense.
Preparation : 1. By ethylene glycol monomethyl ether acetic anhydride derived response to acetic anhydride and concentrated sulfuric acid mixed, heated to 130 ° C, slowly dropping ethylene glycol monomethyl ether, the reaction temperature is maintained at 130-135 ° C, plus step-1 - 2 hours, the temperature of the return 140 ° C After cooling with sodium carbonate and had to pH = 7-8, and anhydrous potassium carbonate in the industrial drying. Filtered desiccant for crude distillation, collecting between 150-160 ° C on the distillate. Further fractionation, the collection 155.5-156.5 ° Cfraction shall be finished. May also with ethylene glycol monomethyl ether acetate in concentrated sulfuric acid catalyst, the reaction of benzene were generated from returning. Ethylene glycol monomethyl ether in the cation exchange resin with acid catalytic reaction, generating continuously removing water and then in distilled products, the law acid conversion rate is 94.5%, the selectivity of 98.5%. 2.2-ethoxy acid and ethanol reaction. 3. Acetic acid ethyl ester and ethoxyethanol exchange. 4. With ethoxyethanol acetate reaction. 5. Ethylene oxide and ethyl acetate reaction.
purposes : as solvents, and other compounds used with leather binder, paint strippers, metal galvanized steel and other corrosion-resistant coating.
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