Propionic Acid

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Related to Propionic: propionic acid, Propionic anhydride

propionic acid

[¦prō·pē¦än·ik ′as·əd]
(organic chemistry)
CH3CH2COOH Water- and alcohol-soluble, clear, colorless liquid with pungent aroma; boils at 140.7°C; used to manufacture various propionates, in nickel-electroplating solutions, for perfume esters and artificial flavors, for pharmaceuticals, and as a cellulosics solvent. Also known as methylacetic acid; propanoic acid.

Propionic Acid


CH3CH2COOH, a monocarboxylic acid of the aliphatic series. It is a colorless liquid with a pungent odor and has a melting point of — 20.8°C, a boiling point of 140.8°C, and a density of 0.993 g/cm3 (20°C). It is soluble in water, alcohol, and ether.

Propionic acid is formed during the fermentation of carbohydrates by propionic acid bacteria and certain other bacteria. In industry it is obtained chiefly through the oxidation of paraffin hydrocarbons as a by-product in the preparation of acetic acid. Propionic acid and its salts (Na, K, and others) are used as fungicides. Propionic anhydride is used in the manufacture of cellulose esters, and geranyl propionate and various other esters are used in perfume bases.

References in periodicals archive ?
Effects of applying molasses, lactic acid bacteria and propionic acid on fermentation quality, aerobic stability and in vitro gas production of total mixed ration silage prepared with oat-common vetch intercrop on the Tibetan Plateau.
It is revealed that the comparatively lower concentration of 80% of formic acid was required than that of acetic and propionic acid.
Volatile fatty acid (acetic, propionic and butyric) concentration were determined using diluted volumes of 0.
The antimicrobial activity of SDA was reflected in the lower populations of enterobacteria, yeast, molds and clostridia, resulted in the lower propionic, butyric acid, ethanol, ammonia N and DM loss in silages treated with SDA than control.
Prior to each endoscopy evaluation and with the help of a gastroscope, 5 mL gastric fluid (juice) were taken and deposited in glass flasks with 1 mL metaphosporic acid for later determination of the concentration of the VFA (acetic, propionic, butyric and lactic acids) by gas chromatography (7), through reference equipment Shimadzu (Shimadzu (Gas Chromatograph GC-17a /auto inyector AOC--20i Shimadzu).
Other diseases which may cause metabolic damage to the globus pallidi include Leigh Disease, propionic acidemia, and poisoning from cyanide or carbon monoxide.
Group of organic acidemias, like methylmalonic acidemia, propionic acidemia and isovaleric acidemia.
These can include acetic, lactic, formic, butyric and propionic acid.
Mimickers of zinc deficiency include biotinidase deficiency, methylmalonic acidemia, propionic acidemia, maple syrup urine disease, citrullinemia, and ornithine transcarbamylase deficiency.