2013年12月12日星期四

A brief overview of Formic Acid


Formic Acid, is also called Methanoic Acid. Formic Acid is contained in the ant and bees secretions, people made distillation ants and obtained Formic Acid, reason has this name. Formic Acid is colorless and stimulating odor and corrosive, foaming swelling after exposure of human skin. The melting point of it is 8.4 , and the boiling point of it is 100.8 . Due to the special structure of Formic Acid, one of its atoms of hydrogen and carboxyl group is directly connected. It can also be seen as a hydroxyl formaldehyde. Therefore, Formic Acid is with acid and aldehyde properties at the same time. In the chemical industry, Formic Acid is used in rubber, pharmaceuticals, dyes, leather type industry.
The properties of Formic Acid:
Formic Acid and water and in the majority of polar organic solvents miscible, also have certain solubility in hydrocarbons. In hydrocarbon and gaseous, Formic Acid is by the dimers form of hydrogen bonding. In the gaseous, hydrogen bonding leads to large deviation between the acid gas and ideal gas equation of state. Liquid and solid acid is by continuous Formic Acid molecules by hydrogen bonding. Formic Acid has the same nature with most other carboxylic acids, although typically do not generate chloride or acid anhydride. Until recently, all attempts to Formic Acid into the derivatives of attempt to product carbon monoxide. Phthalic anhydride can be obtained by formyl fluoride and Sodium Formate at minus 78 . Benzoyl chloride can be made of hydrogen chloride gas through minus 60 1-formyl imidazole. Dehydration of Formic Acid decomposition to carbon monoxide and water. Formic Acid is of a similar reducibility and aldehyde.
Solubility of Formic Acid:
Miscible with water, not soluble in hydrocarbons, miscible with alcohol. HCOOH also known as Formic Acid, is a colorless, flammable smoke, pungent odor of the liquid, has a strong corrosive, Formic Acid and water, ethanol, ethyl ether, glycerol and other miscible volatile liquids with strong corrosion and spicy spicy sour. 

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