Synonym:
Acid C3,
Propanoic acid,
Propanyl acid
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CAS Number 79-09-4
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Linear Formula CH3CH2COOH
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Molecular Weight 74.08
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Beilstein Registry Number 506071
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EC Number 201-176-3
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MDL number MFCD00002756
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PubChem Substance ID 24865136
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eCl@ss 39021305
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Popular Documents: Specification Sheet (PDF)
Properties:
| Related Categories |
Acids,
Acids & Bases,
Analytical Reagents,
Analytical/Chromatography,
Application Specific Reagents,
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grade
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ACS reagent
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vapor density
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2.55 (vs air)
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vapor pressure
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2.4 mmHg ( 20 °C)
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InChI Key
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XBDQKXXYIPTUBI-UHFFFAOYSA-N
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assay
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≥99.5%
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autoignition temp.
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955 °F
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expl. lim.
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12.1 %
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impurities
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≤0.002% Carbonyl compounds
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≤0.10% Readily oxidizable substances (as HCOOH)
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≤0.15% water
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evapn. residue
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≤0.01%
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color
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APHA: ≤20
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refractive index
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n20/D 1.386(lit.)
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bp
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141 °C(lit.)
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mp
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−24-−23 °C(lit.)
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solubility
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H2O: soluble
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density
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0.993 g/mL at 25 °C(lit.)
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cation traces
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heavy metals (as Pb): ≤0.001%
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Description:
Packaging
100, 4×100, 500 mL in glass bottle
Application
Propionic acid may be used to alter limestone in order to increase its ability of CO2 uptake.
General description
Propionic acid (PA) also known as propanoic acid is a short chain fatty acid mainly used as food preservative. It is one of the main metabolic end product formed during the fermentation of undigested food in the colon by the microbiota. Its manufacture by glycerol/glucose co-fermentation using Propionibacterium acidipropionici has been reported. Crystal structure study reveals that PA crystals are monoclinic with space group P21/c.
Propionic acid (PA) is a naturally occurring carboxylic acid, which in its pure state exists as a colorless corrosive liquid with an unpleasant odor. It is miscible in water. Industrially it is produced by hydrocarboxylation of ethylene in presence nickel carbonyl as a catalyst. PA has been found to reduce food intake, lower the fatty acids content in plasma and liver, might improve tissue insulin sensitivity and exerts immunosuppressive actions. Propionic acid is an excellent raw material as it is stable, cheap and safe and can even be used as a food additive.
Safety:
Hazard statements
H226-H314-H335
Precautionary statements
P210-P260-P280-P303 + P361 + P353-P305 + P351 + P338-P370 + P378
Personal Protective Equipment
Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
RIDADR
UN3463 - class 3 - Propionic acid