| [Visitor (112.21.*.*)]answers [Chinese ] | Time :2021-10-25 |  Ethanol is an organic substance, commonly known as alcohol, chemically known as CH3CH2OH (C2H6O or C2H5OH) or EtOH, is a saturated monometalol with hydroxyl, at room temperature, under normal pressure is a flammable, volatile colorless transparent liquid, its aqueous solution has the smell of wine, and slightly stimulating. There is the smell of wine and the pungent taste of stimulation, slightly glycine.
The density of ethanol liquid is 0.789g/cm3 (20C), the density of ethanol gas is 1.59kg/m3, the boiling point is 78.3C, the melting point is -114.1C, flammable, its vapor energy and air can form an explosive mixture, can be dissolved with water at any ratio. It can be mixed with chloroform, ether, methanol, acetone and most other organic solvents, with a relative density (d15.56) 0.816.
Ethanol is widely used to make acetic acid, beverages, flavors, dyes, fuels, etc. Medically also commonly used volume fraction of 70%-75% ethanol as disinfectant, etc. , in the defense industry, health care, organic synthesis, food industry, industrial and agricultural production have a wide range of uses.
Ethanol and ether are isomers.
Danger symbol
S7 S16 S36 S45 S36/S37
Description of hazards
R10 R11 R20/21/22 R36/37/38 R39/23/24/25
molecular weight
46.07
degree of density
0.789(20℃)
The dissocation factor
pKa = 15.9，25℃
surface tension
21.97 mN/m at 25 deg C
Boiling point
78.3℃
Security description
Very flammable, reserve transport away from fire sources, heat sources and so on
vapour pressure
5.8kpa,20℃
Dangerous goods transport number
UN 1170 3/PG 2
chemical formula
C2H6O
Melting point
-114.1℃
EINECS login number
200-578-6
Should be used
National defense industry, medical and health care, organic synthesis, food industry, industrial and agricultural production
water solubility
Mixed with water, can be mixed in ether, chloroform, glycerin, methanol and other most organic solvents
CAS login number
64-17-5
Flash point
13 degrees C, closed flash point
Exterior view
Colorless liquid
Don't call it
No water alcohol, alcohol, no water ethanol
Viscosity
1.074 mPa.s,20℃ |
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