Acetic acid is a mineral substance belonging to the acid group. Acetic acid, other than carboxylic acids, is known in the IUPAC name for ammonia. The use of acidic acid in chemistry goes back to ancient times. In 1847, German chemist Hermann Columbus was the first to make acetic acid from minerals. The use of acetic acid in vinegar is used as a food additive and a variety of pickles. Diluted acetic acid is used as a sponge to kill mushroom plants. Glacial acetic acid is used in the chemical industry in the production of photographic films, the production of PET film (PET).
The name of the substance (Persian language): Acetic acid
English name: Acetic Acid
Brand Name: Acetic Acid
Brand name: Acetic Acid
Other names: Ethanol Acid, Ethyl Acid, Methane Carboxylic Acid, Vinegar, Vinegar Ink
Acetic acid, other than carboxylic acids, is known as an Atenegic acid in the name of IOPAC. And in the tasteful part of the pickle taste, it looks like vinegar taste. The vinegar's age is as much as the life of civilization. The bacterial acetic acid is present everywhere in the world and any culture in which Khmer processing such as beer or wine has inevitably found vinegar, which is the natural consequence of the contact of these alcoholic beverages with air. The use of acetic acid in chemistry goes back to ancient times. In the third century BC, the Greek philosopher Theophrastus described how vinegar works on metals to produce their reaction pigments used in artistic works, including white lead (lead carbonate) and copper-zinc A green combination of copper salts, including copper acetate. Ancient Romans boiled fried wine in lead pots to make a very sweet syrup called sapa. Sapa was rich in lead acetate, which used sugar as lead or sugar (legend) of Saturn, and the nobility of Rome used it to lead poisoning. In the eighth century, Iranian alchemist Jaber ibn Hayan distilled acetic acid from vinegar. During the Renaissance, frozen acetic acid was prepared by dry distillation of metal statuettes. In the sixteenth century, the German alchemist Andreas libavius described such a process and compared the frozen acetic acid obtained from this method to vinegar. The presence of water in vinegar on the properties of acetic acid was so profound that chemists for centuries believed that frozen acetic acid and acid found in vinegar were two different substances. Pierre Edit, a French chemist, proved that these two are in fact the same. In 1847, German chemist Hermann Columbus was the first to make acetic acid from minerals. The sequence of this reaction was to recollect carbon dioxide and convert it into carbon tetrachloride, then, by separating it with tetrachloroethylene, by chromatin it with trichloroacetic acid and finally reducing it by electrolysis to acetic acid.
Physical and chemical properties:
Molecular formula C2H4O2
Molar mass 60.05 g mol-1
Appearance colorless liquid
Density 1.049 g / cm3 (l) 1.266 g / cm3 (s)
Melting point 16.5 C, 290 K, 62 F
Boiling point 118.1 C, 391 K, 245 F
Solubility in water: Fully miscible
Acidity (pKa) 4.76 at 25 ° C
Viscosity 1.22 mPas at 25 ° C
Methanol Carbonisation: In this method, methanol reacts with carbon monoxide at high pressures (atm200) and produces acetic acid. It has been invented since 1920, due to the low cost of methanol and economically viable.
BOTAN OXIDATION: Peroxide is produced by heating butane with oxygen in the presence of metallic manganese, cobalt, and chromium. Peroxide creates acetic acid in the decomposition.
Acetaldehyde oxidation: Staldehyde in mild conditions, in the presence of simple metal catalysts such as monounsaturated chromium, and ... by oxidation of air and acetic acid. The auxiliary products produced in this reaction, such as formic acid and acetyl ether, are isolated by distillation because of a boiling point lower than acetic acid.
Extremely intense eye irritation, causing blindness in the eyes at high concentrations. The skin irritation of this substance depends on the concentration of this substance and its contact time with the skin. Its thick solution may burn. It is blended with air or above 39 ° C.