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Sigma-Aldrich

Propionic acid

≥99.5%, FCC, FG

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Synonym(s):
Acid C3, Propanoic acid, Propanyl acid
Linear Formula:
CH3CH2COOH
CAS Number:
79-09-4
Molecular Weight:
74.08
FEMA Number:
2924
Beilstein:
506071
EC Number:
201-176-3
Council of Europe no.:
3
MDL number:
MFCD00002756
eCl@ss:
39021305
PubChem Substance ID:
24901395
Flavis number:
8.003
NACRES:
NA.21

biological source

synthetic

Quality Level

400

grade

FG
Fragrance grade
Halal
Kosher

Agency

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002
FCC
FDA 21 CFR 178.1010
FDA 21 CFR 184.1081

vapor density

2.55 (vs air)

vapor pressure

2.4 mmHg ( 20 °C)

Assay

≥99.5%

autoignition temp.

955 °F

expl. lim.

12.1 %

refractive index

n20/D 1.386 (lit.)

bp

141 °C (lit.)
141 °C

mp

−24-−23 °C (lit.)

solubility

H2O: soluble

density

0.993 g/mL at 25 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

dairy; pungent; acidic

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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General description

Propionic acid (PA) is a naturally occurring carboxylic acid, which in its pure state exists as a colorless corrosive liquid with an unpleasant odor. Propionic acid is an excellent raw material as it is stable, cheap and safe and can even be used as a food additive.
Propionic acid is a volatile fatty acid (VFA) formed in the rumen of ruminants by bacterial fermentations.

Signal Word

Danger

Hazard Statements

H226 - H314 - H335

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

129.2 °F - closed cup

Flash Point(C)

54 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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Metabolism of propionic acid in animal tissues I. Enzymatic conversion of propionate to succinate.
Flavin M & Ochoa S.
The Journal of Biological Chemistry, 229(2), 965-979 (1957)
Interconversions and production of volatile fatty acids in the sheep rumen.
Bergman EN, et al.
The Biochemical Journal, 97(1), 53-58 (1965)
Biological effects of propionic acid in humans; metabolism, potential applications and underlying mechanisms
Sa'ad, H., et al.
Molecular and Cellular Biology, 1801 (11), 1175-1183 (2010)
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)
Flour and Breads and their Fortification in Health and Disease Prevention.
Victor R. Preedy, Ronald Ross Watson, Vinood B
Technology & Engineering, 476-476 (2011)
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