
Ethyl cellulose is a derivative of cellulose in which some of the hydroxyl groups on the repeating glucose units are converted into ethyl ether groups. The number of ethyl groups can vary depending on the manufacturer. It is mainly used as a thin-film coaterial. Ethyl cellulose is used as a food additive as an emulsifier (E462). ...
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http://en.wikipedia.org/wiki/Ethyl_cellulose

ethyl cellulose An ethyl ether of cellulose, in the form of white granules obtained from the treatment of wood pulp with alkali and used in plastics and lacquers.
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an ethyl ether of cellulose, in the form of white granules obtained from the treatment of wood pulp with alkali: used in plastics and lacquers.
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https://www.infoplease.com/dictionary/ethyl-cellulose
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