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Isopropanol (IPA), also known as 2-propanol, is an organic compound with the chemical formula of C3H8O. It is the isomer of n-propanol, a colorless transparent liquid with the smell of a mixture of ethanol and acetone. It is soluble in water, as well as most organic solvents such as alcohol, ether, benzene and chloroform.
Isopropanol is an organic compound, an isomer of n-propanol, also known as dimethyl methanol and 2-propanol, and also known as IPA in the industry. It is a colorless transparent liquid, flammable, and has the smell of a mixture of ethanol and acetone. Soluble in water, but also in alcohol, ether, benzene, chloroform and other organic solvents. Isopropanol is an important chemical product and raw material. It is mainly used in pharmaceuticals, cosmetics, plastics, spices, coatings, etc.
|
Unit |
Value |
|
|
Purity |
% |
99.9 min |
|
Color |
Hazen |
10max |
|
Acid value (as acetate acid) |
% |
0.002max |
|
Water Content |
% |
0.1max |
|
Appearance |
- |
Colorless, clarity liquid |
Isopropanol and propyl alcohol (1-propanol) are structural isomers of each other and have similar molecules, the difference being their -OH is attached at a different location. It is miscible in water (infinitely), ether, chloroform, acetone and alcohol and chloroform and insoluble in salt solutions.
Technical properties of Isopropanol:
Molecular Formula: C3H8O, CH3CHOHCH3, (CH3)2CHOH
Molecular weight: 60.1 g/mol
Acidity: 16.5ph
Flashpoint: 53°F / 11.7°C
Boiling Point: 180.5°F / 82.3°C
Melting Point: -127.3°F / -89.5°C
Density: 0.786 g/cm3 (20°C)
Refractive index: 1.3772 (20°C)
Log P: -0.16
It is a colorless transparent liquid with chemical properties, has the smell of a mixture of ethanol and acetone, can be miscible with alcohol, ether, chloroform and water, can dissolve various organic substances and some inorganic substances such as alkaloids, rubber, shellac, rosin, synthetic resin, and can form an azeotrope with water, and is insoluble in salt solution. It can ignite and burn at normal temperature, and its steam and air can easily form explosive mixture. Isopropyl alcohol is easy to produce peroxide, and sometimes needs to be identified before use. The method is as follows: take 0.5mL isopropanol, add 1mL 10% potassium breaker solution, 0.5mL 1:5 diluted hydrochloric acid and a few drops of starch solution, shake for 1 minute, and if it is blue or blue-black, it is proved that there is peroxide. Similar to ethanol and propanol, but with characteristics of secondary alcohol
1. Engineering control: the production process is closed and fully ventilated. Provide protective shower and eyewash equipment.
2. Respiratory system protection: generally, no special protection is required. Filtered gas mask can be worn when exposed to high concentration.
3. Eye protection: Generally, special protection is not required, and protective glasses can be worn when exposed to high concentration.
4. Body protection: wear anti-static work clothes.
5. Hand protection: wear latex gloves.
6. Other protection: smoking is prohibited at the work site. Maintain good hygiene habits.
1. Isopropanol is used in pharmaceuticals, cosmetics, plastics, spices, coatings, etc
2. Isopropanol is used to produce acetone, isopropyl ester, isopropylamine (raw material of atrazine), diisopropyl ether, isopropyl acetate and thymol
3. Isopropanol is used for pharmaceuticals, solvent, extractant, antifreeze, etc
4. Isopropanol is an important intermediate in the production of pesticides, which can produce fungicides such as isoprothrin and isoprothrin, insecticides and acaricides such as amifos, isocarbophos, isocarb, fenvalerate, and herbicides such as isoprothrin, and can also produce bromoisopropane and chloroisopropane, which are also important intermediates of pesticides.
5. As a chemical raw material, isopropanol can produce acetone, hydrogen peroxide, methyl isobutyl ketone, diisobutyl ketone, isopropyl amine, isopropyl ether, isopropyl ether, isopropyl chloride, as well as isopropyl fatty acid and chlorinated fatty acid isopropyl ester
6. Isopropanol is used as antifreeze, cleaner, additive for blended gasoline, dispersant for pigment production, fixative for printing and dyeing industry, antifogging agent for glass and transparent plastics, etc.
1. Water connection method
Isopropanol can be produced by fermentation, and 16t grain is required to produce 1t2-propanol. Propylene water method is adopted in industry, and sulfuric acid water method (also called indirect water method) is adopted earlier. Propylene reacts with sulfuric acid to obtain isopropyl hydrogen sulfate, which is hydrolyzed to isopropyl alcohol.
Features: this method requires low purity of propylene, and the conversion rate of propylene can reach 50% - 60%, which can reduce the refining cost. However, the consumption of sulfuric acid is large, and there are problems of equipment corrosion and 40% waste concentrated sulfuric acid.
2. Direct water method
In 1951, the British Bonemen Chemical Industry Company began to produce 2-propanol by direct hydration of propylene. Propylene and water are hydrated by heating and pressure in the presence of catalyst.
3. Acetone hydrogenation to isopropanol
This method was developed after 2005, using copper or zinc oxide as carrier catalyst or nickel-based catalyst under 70-200 ℃ and atmospheric pressure. Acetone is hydrogenated to produce isopropanol. The selectivity of this method is 97%, and the conversion of acetone is 85% - 90%. Features: low energy consumption, light equipment corrosion, but high cost of acetone raw material. It is mainly due to the price inversion of acetone and isopropanol (traditionally one of the consumption uses of isopropanol is dehydrogenation to produce acetone).
With the development of science and technology, people want to obtain isopropanol with higher purity. How can this be achieved?
4. High-efficiency energy-saving process of ultra-clean and high-purity isopropanol
It is characterized in that: first, industrial isopropanol with a mass percentage concentration of 98% enters from the bottom of the molecular sieve adsorption tower, and then flows out from the top of the tower after dehydration by the molecular sieve adsorption tower to obtain high-purity isopropanol with a water content of less than 100 ppm. Then, high-purity isopropanol extracted from the molecular sieve adsorption tower is sent to the filter to remove particle size 1 μ For particles above m, the filtered high-purity isopropanol is then sent to the distillation tower, and then enters the condenser after rectification, and the ultrapure high-purity isopropanol is prepared after condensation.
| Nature of inquiries | Department | Location | Telephone | |
|---|---|---|---|---|
| Sales/distribution | Isopropanol supply chain sales team | China | +86-19117288062 | service@skychemwin.com |
Chemwin can provide a wide range of bulk hydrocarbons and chemical solvents for industrial customers.
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