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Merck

402907

Sigma-Aldrich

Propionic acid

ACS reagent, ≥99.5%

Synonim(y):

Acid C3, Propanoic acid, Propanyl acid

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About This Item

Wzór liniowy:
CH3CH2COOH
Numer CAS:
Masa cząsteczkowa:
74.08
Beilstein:
506071
Numer WE:
Numer MDL:
Kod UNSPSC:
12352100
eCl@ss:
39021305
Identyfikator substancji w PubChem:
NACRES:
NA.21

klasa czystości

ACS reagent

Poziom jakości

gęstość pary

2.55 (vs air)

ciśnienie pary

2.4 mmHg ( 20 °C)

Próba

≥99.5%

Formularz

liquid

temp. samozapłonu

955 °F

granice wybuchowości

12.1 %

klasy chemiczne analitów

amino acids

zanieczyszczenia

≤0.002% Carbonyl compounds
≤0.10% Readily oxidizable substances (as HCOOH)
≤0.15% water

pozostałość po odparowaniu

≤0.01%

kolor

APHA: ≤20

współczynnik refrakcji

n20/D 1.386 (lit.)

bp

141 °C (lit.)

mp

−24-−23 °C (lit.)

rozpuszczalność

H2O: soluble

gęstość

0.993 g/mL at 25 °C (lit.)

ślady kationów

heavy metals (as Pb): ≤0.001%

grupa funkcyjna

carboxylic acid

ciąg SMILES

CCC(O)=O

InChI

1S/C3H6O2/c1-2-3(4)5/h2H2,1H3,(H,4,5)

Klucz InChI

XBDQKXXYIPTUBI-UHFFFAOYSA-N

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Opis ogólny

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.

Zastosowanie

Propionic acid may be used to alter limestone in order to increase its ability of CO2 uptake.
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Hasło ostrzegawcze

Danger

Zwroty wskazujące rodzaj zagrożenia

Klasyfikacja zagrożeń

Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B - STOT SE 3

Organy docelowe

Respiratory system

Kod klasy składowania

3 - Flammable liquids

Klasa zagrożenia wodnego (WGK)

WGK 1

Temperatura zapłonu (°F)

129.2 °F - closed cup

Temperatura zapłonu (°C)

54 °C - closed cup

Środki ochrony indywidualnej

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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Certyfikaty analizy (CoA)

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Klienci oglądali również te produkty

Derrick F MacFabe et al.
Behavioural brain research, 217(1), 47-54 (2010-10-13)
Recent evidence suggests that a variety of environmental factors, including dietary and gastrointestinal agents, may contribute to autism spectrum disorders (ASD). Here we administered propionic acid (PPA), a short chain fatty acid that is used as a food preservative and
Yin Liu et al.
Current microbiology, 62(1), 152-158 (2010-06-15)
Cosubstrates fermentation is such an effective strategy for increasing subject metabolic products that it could be available and studied in propionic acid production, using glycerol and glucose as carbon resources. The effects of glycerol, glucose, and their mixtures on the
The crystal structure of propionic acid.
Strieter FJ, et al.
Acta Crystallographica, 15(12), 1233-1239 (1962)
Enhancement of CO2 capture capacity by modifying limestone with propionic acid.
Sun R, et al.
Powder Technology, 233, 8-14 (2013)
Nucleophilic ?-Carbon Activation of Propionic Acid as a 3-Carbon Synthon by Carbene Organocatalysis
Jin, Zhichao, et al.
Chemistry?A European Journal, 21 (26), 9360-9363 (2015)

Produkty

Separation of Propionic acid; Acetic acid; Heptanoic acid; Isobutyric acid; Valeric acid; Isocaproic acid; Butyric acid; Isovaleric acid

Separation of Methyl oleate; Caprylic acid; Heptanoic acid; Methyl decanoate; Methyl dodecanoate; Myristic acid; Methyl palmitate; Methyl palmitoleate; Methyl stearate; Methyl linoleate; Methyl linolenate; Acetic acid; Arachidic acid; Behenic acid; Propionic acid; Isobutyric acid; Valeric acid; Isovaleric acid; Isocaproic acid; Butyric acid

Protokoły

In this study, SPME was used for the analysis of free fatty acids in Parmesan cheese using a 65 μm Carbowax/divinylbenzene (DVB) SPME fiber. Headspace extraction of the cheese sample was conducted at 65 °C for 15 minutes and analyzed by GC with FID detection. SPME is ideal for analyzing the volatiles associated with solid food samples. The phase chemistry of the Nukol GC column provides excellent peak shape of acidic compounds.

Separation of Acetone; Acetic acid; Propionic acid; Ethyl butyrate; Ethanol; Isoamyl acetate; Isobutyric acid; 3-Methyl-2-butanol; Methyl acetate; 1-Propanol; Acetal, ≥98%, FG; 2-Methyl-1-pentanol; Butyl acetate; Ethyl propionate; 3-Pentanol; 2-Pentanol, 98%; Ethyl isobutyrate; Isobutyl acetate; Acetaldehyde; Furfural; Butyric acid; Methanol; Ethyl acetate

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