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This document provides instructions for producing absolute alcohol using calcium oxide to remove water from 95% ethanol. Rectified spirit (95% ethanol) is mixed with calcium oxide and gently refluxed for 6 hours to allow the calcium oxide to react with water, producing calcium hydroxide. The ethanol is then distilled to obtain absolute alcohol (99.5% ethanol), which is preserved in a stoppered bottle. The document also provides background information on absolute alcohol, calcium oxide, and azeotropic mixtur

Author

eric

Language

EN