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Sodium propionate

Sodium propionate[1]
IUPAC name Sodium propanoate
Other names Sodium propionate
CAS number 137-40-6
PubChem 8724
SMILES CCC(=O)[O-].[Na+]
Molecular formula C3H5NaO2
Molar mass 96.07
Appearance Transparent crystals
Melting point

289 °C

Solubility in water ~1 g/mL
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Sodium propionate or sodium propanoate is the sodium salt of propionic acid which has the chemical formula Na(C2H5COO).


It is used as a food preservative and is represented by the food labeling E number E281 in Europe. It is used primarilly as a mold inhibitor in bakery products.


  1. ^ Merck Index, 11th Edition, 8623.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sodium_propionate". A list of authors is available in Wikipedia.
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