Ethylene glycol monoethyl ether acetate,CAS 111-15-9

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Glycol monoethyl ether acetate Use and Manufacturing
Methods of Manufacturing
1. From the reaction of ethylene glycol monoethyl ether and acetic anhydride, mix acetic anhydride and concentrated sulfuric acid. After heating to 130°C, slowly add ethylene glycol monoethyl ether dropwise. The reaction temperature is maintained at 130-135°C. Add flow for 1-2h, and reflux temperature is 140℃. After cooling, it is neutralized with sodium carbonate to pH=7-8, and then dried with industrial anhydrous potassium carbonate. Filter out the desiccant for crude fractionation and collect the distillate at 150-160°C. Then fractional distillation, collect the 155.5-156.5 ℃ fraction is the finished product. It can also be obtained by reacting ethylene glycol monoethyl ether and acetic acid with concentrated sulfuric acid and refluxing in benzene. Ethylene glycol monoethyl ether reacts with acetic acid under the catalysis of cationic resin to continuously remove the generated water, and then distill the finished product. The conversion rate of acetic acid in this method is 94.5%, and the selectivity of the product is 98.5%. 2. 2-Ethoxyacetic acid and ethanol reaction method. 3. Ethyl acetate and ethoxyethanol transesterification method. 4. Acetic acid and ethoxyethanol reaction method. 5. Reaction method of ethylene oxide and ethyl acetate.

Uses
Ethylene glycol ether acetate (CAC) is an ester solvent with excellent performance.