Formic Acid

Basic information on formic acid:

CAS: 64-18-6

Molecular formula: CH2O2

Molecular weight: 46.03

Physicochemical properties of formic acid:

Appearance: Colorless transparent fuming liquid with irritating odor

Boiling point: 100.7℃

Melting point: 8.4℃

Application of formic acid:

Formic acid is one of the basic organic chemical raw materials, widely used in pesticides, leather, textile, printing and dyeing, pharmaceutical and rubber industries, etc. It can also be used to prepare various solvents, plasticizers, rubber coagulants, animal feed additives and new technology to synthesize insulin Wait. In my country's formic acid consumption, the pharmaceutical industry accounts for about 45%, the chemical industry accounts for about 30%, and other sectors such as light industry and textile account for about 25%. Formic acid is one of my country's important export chemical products.

At present, the production of formic acid in my country all adopts the sodium formate method. Formic acid is often used as an inexpensive, less volatile and corrosive substitute for inorganic acids, widely used in light industry.

In the textile and printing and dyeing industries, formic acid is used as an agent for eliminating nitrous gas produced by the Indicosol sodium nitrite method, a dyeing auxiliary for weak acid dyes and neutral complex dyes, and a dyeing auxiliary for reactive dyes to dye nylon. Formic acid will not remain on the fabric during the printing and dyeing process, and the acidity is stronger than that of acetic acid, which can reduce the hexachromic chromium, so it can improve the utilization rate of dyes in the process of chromium mordant dyeing. Using formic acid instead of sulfuric acid can avoid cellulose degradation, and the acidity is moderate, and the dyeing is uniform, so it is an excellent dyeing assistant.

Formic acid is used as a substitute for inorganic acids for decolorization, dehairing, lime neutralization and mildew prevention in wet leather in tanned leather. Using formic acid as a coagulant can improve the quality of natural rubber, reduce production costs, and can also be used for the regeneration of waste rubber. Using formic acid to make feed additives has great potential in silage. Formic acid has the function of inhibiting or preventing the growth of mold, and can change the natural fermentation form of feed. Fatty acid is often added to enhance the anti-mold effect. Feeding dairy cows with formic acid-treated green fodder can prevent the reduction of milk production in winter, and the fattening effect is also significantly improved. In the food industry, formic acid is used for disinfection and preservation in the wine industry, as a cleaning and disinfectant for cans, and as a preservative for fruit juices and foods. Numerous derivatives of formic acid are intermediates for medicines, pesticides, dyes, fragrances, solvents, used in the manufacture of borneol, aminopyrine, caffeine, vitamin B1, dipyridine, fenamidine, tricycline, tricyclazole, dimethicone formamide, etc. Among the formic acid derivatives, substituted carboxamides and formate esters are widely used in industry