The density of alcohol is 0.789 g/cm3. Pure alcohol is a colorless and transparent liquid, which has a special fragrance and is volatile. It is miscible with water in any proportion and with most organic solvents such as ether, chloroform, methanol, acetone and glycerol. Ethanol is an organic compound with a simple structural formula of CH3CH2OH or C2H5OH and a molecular formula of C2H6O, commonly known as alcohol.

Ethanol is a volatile colorless transparent liquid at normal temperature and pressure, and its toxicity is low. Pure liquid cannot be drunk directly. The aqueous solution of ethanol has the taste of wine, slightly irritating and sweet. Ethanol is flammable, and its vapor will form an explosive mixture with air.

Because of hydrogen bonds, alcohol has a strong deliquescence and can quickly absorb water from the air. Alcohol can react with sodium metal to produce hydrogen, but it doesn't react with sodium metal as violently as water. Metal sodium reacts violently with water, sodium melts, bubbles are fierce, and the heat generated by the reaction can make sodium burn; However, the reaction between alcohol and sodium metal is slow, the shape changes little, the bubbles are slow, and sodium metal sinks under the solution.