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Ethanol precipitation is a method used to purify and/or concentrate RNA, DNA and polysaccharides such as pectin and xyloglucan from aqueous solutions by adding ethanol as an antisolvent.Contents.thanol precipitation is a method used to purify and/or concentrate RNA, DNA and polysaccharides such as pectin and xyloglucan from aqueous solutions by adding ethanol as an antisolvent. Contents.
Denatured fuel ethanolâs. specific gravity is 0.79, which indicates it is lighter than water and it has an auto-ignition. temperature of 689Â°F and a boiling point of 165-175Â°F. Ethanol is less toxic than gasoline or methanol.