Traditional Culture Encyclopedia - Traditional festivals - What is ethanol?
What is ethanol?
Ethanol is a flammable, volatile, colorless and transparent liquid at normal temperature and pressure, and its toxicity is low, so pure liquid cannot be directly drunk. It has a special fragrance and is slightly irritating; Slightly sweet with pungent taste.
Flammable, its vapor can form an explosive mixture with air and can be miscible with water in any proportion. It is miscible with chloroform, ether, methanol, acetone and most other organic solvents. Ethanol and methyl ether are isomers of each other.
Extended data:
The Application of disinfection products
Disinfectants with different concentrations:
Alcohol above 99.5% (volume fraction) is called anhydrous alcohol. Biological use: The pigment in chloroplast can be dissolved in organic solvent anhydrous ethanol (or acetone), so the pigment in chloroplast can be extracted with anhydrous ethanol.
Wipe the ultraviolet lamp with 95% alcohol. This kind of alcohol is commonly used in hospitals, but it is only used to clean camera lenses at home. ? [ 10]?
70% ~ 75% alcohol is used for disinfection. This is because excessive concentration of alcohol will form a protective film on the surface of bacteria, preventing it from entering the interior of bacteria, and it is difficult to completely kill bacteria. If the alcohol concentration is too low, it can enter bacteria, but it can't coagulate protein in the body and kill bacteria completely. Among them, 75% alcohol has the best disinfection effect.
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