Acid Formic Price 85

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FORMIC ACID

Formic acid is a weak electrolyte, its aqueous solution is weakly acidic and has a certain corrosiveness, because the molecular structure does not contain alkyl, so the acidity is ranked as the first non-substituted fatty acids. Formic acid is also reductive, can be oxidised to carbon dioxide and water, esterification, amidation, addition, neutralisation, dehydration and other reactions can also occur.
The industrial production of formic acid includes sodium formate, methyl formate, formamide and butane liquid-phase oxidation, etc. In the laboratory, it can be produced by decomposition of oxalic acid (glycolic acid) or hydrolysis of nitrile.

Physical Properties
Formic acid is a colourless transparent fuming liquid with strong irritating odour, easily soluble in water, ethanol, ether and other organic solvents, and has certain solubility in hydrocarbon substances, and highly concentrated formic acid solution is easy to freeze in winter (melting point is 8.2~8.4 ℃). The relationship between the molar constant pressure heat capacity of formic acid gas and temperature in the range of 300-700 K can be expressed by the following quadratic equation with respect to temperature. It is the only acid in fatty acids that has a hydrogen atom attached to the carboxyl group, and the hydrogen atom repels electrons much less than the hydrocarbon group, making the electron density of the carboxyl carbon atom lower than that of the other carboxylic acids, together with the conjugation effect, the electrons on the carboxyl oxygen atoms are more favourable to the carbon, so that the formic acid is more acidic than any other carboxylic acid in the homologous group .

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