Ethyl Acetate

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ETHYL ACETATE (C4H8O2)                                                              
Chemical Formula : C4H8O2                   CAS Registry Number : 67-64-1
Chemical Structure

      

           

DESCRIPTION :                           


Ethyl acetate (systematically, ethyl ethanoate, commonly abbreviated EtOAc or EA) is the organic compound with the formula CH3COOCH2CH3. This colorless liquid has a characteristic sweet smell (similar to pear drops) like certain glues or nail polish removers, in which it is used. Ethyl acetate is the ester of ethanol and acetic acid; it is manufactured on a large scale for use as a solvent. In 1985, about 400,000 tons were produced yearly in Japan, North America, and Europe combined. In 2004, an estimated 1.3M tons were produced worldwide.
   
Hazards                     
NFPA 704
EU Classification
 Productions:                                
Ethyl acetate is synthesized industrially mainly via the classic Fischer esterification reaction of ethanol and acetic acid. This mixture converts to the ester in about 65% yield at room temperature:CH3CH2OH + CH3COOH ⇌ CH3COOCH2CH3 + H2OThe reaction can be accelerated by acid catalysis and the equilibrium can be shifted to the right by removal of water. It is also prepared industrially using the Tishchenko reaction, by combining two equivalents of acetaldehyde in the presence of an alkoxide catalyst:2 CH3CHO → CH3COOCH2CH3

Uses                                            

Ethyl acetate is primarily used as a solvent and diluent, being favored because of its low cost, low toxicity, and agreeable odor. For example, it is commonly used to clean circuit boards and in some nail varnish removers (acetone and acetonitrile are also used). Coffee beans and tea leaves are decaffeinated with this solvent. It is also used in paints as an activator or hardener.Ethyl acetate is present in confectionery, perfumes, and fruits. In perfumes, it evaporates quickly, leaving but the scent of the perfume on the skin.
Risk-Phrases : R11, R36, R66, R67
Safety-Phrases : S16, S26, S33
 

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