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402907

Sigma-Aldrich

Propionic acid

Propionic acid

ACS reagent grade, ≥99.5%, liquid

Synonym(s):

Acid C3, Propanoic acid, Propanyl acid

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$51.70
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$75.23
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100 ML
$51.70
500 ML
$75.23
4 X 100 ML
$196.00

About This Item

Linear Formula:
CH3CH2COOH
CAS Number:
Molecular Weight:
74.08
Beilstein/REAXYS Number:
506071
EC Number:
MDL number:
UNSPSC Code:
12352100
eCl@ss:
39021305
PubChem Substance ID:
NACRES:
NA.21

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Product Name

Propionic acid, ACS reagent, ≥99.5%

grade

ACS reagent

Quality Level

vapor density

2.55 (vs air)

vapor pressure

2.4 mmHg ( 20 °C)

assay

≥99.5%

form

liquid

autoignition temp.

955 °F

expl. lim.

12.1 %

analyte chemical class(es)

amino acids

impurities

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

evapn. residue

≤0.01%

color

APHA: ≤20

refractive index

n20/D 1.386 (lit.)

bp

141 °C (lit.)

mp

−24-−23 °C (lit.)

solubility

H2O: soluble

density

0.993 g/mL at 25 °C (lit.)

cation traces

heavy metals (as Pb): ≤0.001%

functional group

carboxylic acid

SMILES string

CCC(O)=O

InChI

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

InChI key

XBDQKXXYIPTUBI-UHFFFAOYSA-N

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1 of 4

This Item
P5561W292400W292419
assay

≥99.5%

assay

~99%

assay

≥99.5%

assay

99%

Quality Level

200

Quality Level

100

Quality Level

400

Quality Level

400

solubility

H2O: soluble

solubility

H2O: soluble

solubility

H2O: soluble

solubility

H2O: soluble

mp

−24-−23 °C (lit.)

mp

−24-−23 °C (lit.)

mp

−24-−23 °C (lit.)

mp

−24-−23 °C (lit.)

form

liquid

form

-

form

-

form

-

refractive index

n20/D 1.386 (lit.)

refractive index

n20/D 1.386 (lit.)

refractive index

n20/D 1.386 (lit.)

refractive index

n20/D 1.386 (lit.)

General description

Propionic acid (PA) also known as propanoic acid is a short chain fatty acid mainly used as food preservative.[1] It is one of the main metabolic end product formed during the fermentation of undigested food in the colon by the microbiota.[2] Its manufacture by glycerol/glucose co-fermentation using Propionibacterium acidipropionici has been reported.[3] Crystal structure study reveals that PA crystals are monoclinic with space group P21/c.[4]
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.[5] 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.[6] Propionic acid is an excellent raw material as it is stable, cheap and safe and can even be used as a food additive.[7]

Application

Propionic acid may be used to alter limestone in order to increase its ability of CO2 uptake.[8]

signalword

Danger

Hazard Classifications

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

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

129.2 °F - closed cup

flash_point_c

54 °C - closed cup

ppe

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


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Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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