Alkohol
Ethyl Alcohol
CAS: 64-17-5
Molecular Formula: C2H6O
Alkohol - Names and Identifiers
Alkohol - Physico-chemical Properties
| Molecular Formula | C2H6O |
| Molar Mass | 46.07 |
| Density | 0.789 |
| Melting Point | -114℃ |
| Boling Point | 78℃ |
| Flash Point | 12℃ |
| Water Solubility | miscible |
| Refractive Index | 1.3614 |
| Physical and Chemical Properties | Colorless, transparent, flammable and volatile liquid. There is the smell of wine and pungent taste. melting point -117.3 ℃ boiling point 78.32 ℃ relative density 0.7893 refractive index 1.3614 flash point 14 ℃ solubility: soluble in water, methanol, ether and chloroform. It can dissolve many organic compounds and several inorganic compounds. |
| Use | Used as basic organic chemical raw materials, also used as organic solvents, wine, food industry |
Alkohol - Risk and Safety
| Hazard Symbols | F - Flammable |
| Risk Codes | R11 - Highly Flammable |
| Safety Description | S16 - Keep away from sources of ignition. S7 - Keep container tightly closed. |
| UN IDs | UN 1170/1986/1987 |
Alkohol - Upstream Downstream Industry
Alkohol - Nature
Open Data Verified Data
colorless transparent liquid. Is an azeotropic mixture with water distilled at 78.01 °c. Volatile. With water and glycerol, chloroform, benzene, ether and other organic solvents miscible.
Last Update：2024-01-02 23:10:35
Alkohol - Preparation Method
Open Data Verified Data
Industrial ethanol was dehydrated by azeotropic distillation to obtain anhydrous ethanol with water content below 0.1%.
Last Update：2022-01-01 09:26:16
Alkohol - Category
Authoritative Data Verified Data
pharmaceutical excipients, solvents.
Last Update：2024-01-02 23:10:35
Alkohol - Trait
Authoritative Data Verified Data
- This product is colorless and clear liquid; Micro-odor; Volatile, easy to burn, light blue flame when burning; Boiling when heated to about 78°C.
- This product can be freely miscible with water, glycerin, trimethanone or ethyl sugar.
relative density
The relative density of this product (General 0601) is not more than 0. 8129, equivalent to containing C2HsO not less than 95.0% (ml/ml).
Last Update：2024-01-02 23:10:35
Alkohol - Differential diagnosis
Authoritative Data Verified Data
- take 1ml of this product, add 5ml of water and 1ml of sodium hydroxide test solution, and then slowly add 2ml of Iodine test solution, which will cause the odor of iodoform and yellow precipitate.
- The infrared absorption spectrum of this product should be consistent with that of the control (Spectrum set 1290).
Last Update：2022-01-01 11:29:33
Alkohol - Use
Open Data Verified Data
The pharmaceutical industry.
Last Update：2022-01-01 09:26:14
Alkohol - Exam
Authoritative Data Verified Data
pH
take 20ml of this product, add 20ml of water, shake well, add 2 drops of phenolphthalein indicator solution, the solution should be colorless; Add 0.01mol/L sodium hydroxide solution 1.0, the solution should be pink.
clarity and color of solution
This product should be clear and colorless. Take the appropriate amount of this product, mixed with the same volume of water, the solution should be clear; At 10°C for 30 minutes, the solution should still be clear.
absorbance
take this product, with water as the blank, according to UV-visible spectrophotometry (General 0401) to determine the absorbance, at the wavelength of 240nm shall not exceed 0.08; the wavelength range of 250 ~ 260nm should not exceed 0.06; The wavelength range of 270 ~ 340nm should not exceed 0.02.
determination of volatile impurities by gas chromatography (General 0521)
- chromatographic conditions and system suitability test with 6% cyanopropylphenyl-94% dimethylpolysiloxane as stationary liquid; Starting temperature 40°C, maintained for 12 minutes, heating up to 240°C at a rate of 10°C per minute, it was maintained for 10 min; The inlet temperature was 200°C; The detector temperature was 280°C. The resolution between the acetaldehyde peak and the methanol peak in the control solution (B) shall be satisfactory.
- Precision Measurement Method: Take anhydrous methanol 100 u1, put it in a 50ml measuring flask, dilute it to the scale with the test sample, shake it well, take 5ml, put it in a 50ml measuring flask, dilute to the scale with the test sample, shake well, as a control solution (a); Take 50ul anhydrous methanol, 50u1, and put it in a 50ml measuring flask, dilute to the scale with the test sample, shake well, take 100m accurately, put it in a 10ml measuring flask, dilute to the scale with the test sample, shake well, and use it as a control solution (B); accurately measure 150 ml of acetal, put it in a 50ml measuring flask, dilute it to the scale with the sample, shake it well, take 100M1 and put it in a 10ml measuring flask, dilute to the scale with the test sample, Shake, as a control solution (c); Take the benzene 100 u1 accurately, put it in a 100ml measuring flask, dilute it with the test sample to the scale, shake, accurately measure the lOOpU and put it in a 50ml measuring flask, dilute it to the scale with the test sample, shake it well, and use it as the control solution (d); Take the test sample as the test solution a; take 4-methyl -2-pentanol 150 u1 accurately, put it in a 500ml measuring flask, dilute the sample to the scale, shake well, and use it as a sample solution (B). The control solution (a), (B), (c), (d) and the test solution (a) were accurately measured. (B) 1 u1 for each sample, respectively inject human gas chromatograph, record chromatogram, sample solution (a) if there is impurity peak, methanol peak area shall not be greater than the control solution (a) 0.5 times (0.02%) of the peak area of methanol; The total amount of acetaldehyde and acetal is calculated according to formula (1), and the total amount shall not exceed 0.001% (calculated by acetaldehyde); Benzene is calculated according to formula (2) calculated, shall not exceed 0.0002%; The sum of the peak areas of other impurities in the Test Solution (B) shall not be greater than the peak area of 4-methyl-2-pentanol (0.03%, based on 4-methyl-2-pentanol).
Non-volatile
Take 40ml of this product, put it in a 105°C constant weight evaporation dish, and then dry it on a water bath, and then dry it at 105°C for 2 hours. The residue left shall not pass lmg.
Last Update：2022-01-01 11:29:33
Alkohol - Safety
Open Data Verified Data
Central nervous system depressants. It should be stored separately from oxidants, acids, alkali metals, amines, etc., and mixed storage is not required.
Last Update：2022-01-01 09:26:15
Alkohol - Category
Authoritative Data Verified Data
Disinfection preservative, solvent.
Last Update：2022-01-01 11:29:34
Alkohol - Storage
Authoritative Data Verified Data
light shielding, sealed storage.
Last Update：2022-01-01 11:29:34
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CAS: 64-17-5
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CAS: 64-17-5
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Raw Materials for Alkohol
Downstream Products for Alkohol